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HomeMy WebLinkAbout2021-03-18; Habitat Management Plan Reporting(Districts - All); Gomez, PazTo the members of the: CITY COUNCIL Date 5 /,g /)J CA ✓ CC ✓ CM _✓ ACM ✓ DCM (3) V March 18, 2021 Council Memorandum To: Honorable Mayor Hall and Members of the City Council From: Paz Gomez, Deputy City Manager, Public Works Via: Geoff Patnoe, Assistant City Manager (ti} Re: Habitat Management Plan Reporting (Districts -All) {city of Carlsbad Memo ID #2021061 This memorandum provides information related to the Habitat Management Plan {HMP) Annual Report, Triennial Biological Monitoring Report and annual public meeting. Background The HMP, which was approved by City Council Resolution No. 2004-364, is a citywide conservation program that identifies how the city, in cooperation with state and federal agencies, will preserve and protect the diversity of native species and habitats while allowing for continued economic growth consistent with the General Plan and Growth Management Plan. As required by the HMP Implementing Agreement, staff submitted the 16th annual HMP Report {Attachment A) and Triennial Biological Monitoring Report (Attachment B) to the U.S. Fish and Wildlife Service and California Department of Fish and Wildlife (collectively, Wildlife Agencies), and hosted a public meeting on March 9, 2021. These reports are also available in this link: https://www.carlsbadca.gov/services/depts/pw/environment/habitat/reports.asp Discussion The purpose of the HMP Annual Report is to document the city's compliance with HMP for the Wildlife Agencies. This report includes habitat gains (conserved) and losses (developed), land acquisitions, HMP Minor Amendments, Lake Calavera mitigation parcel tracking, HMP mitigation fees collected and a summary of management and monitoring conducted throughout the preserve system. The Triennial Biological Monitoring Report documents the long-term biological monitoring to track the status and trends of sensitive species covered by the HMP. Most of the long-term monitoring is conducted by preserve managers on each preserve. The city compiles the data and summarizes the status, threats and management for each species in the Triennial Biological Monitoring Report. The report also summarizes citywide studies conducted by the city's Habitat Management Division in coordination with the land managers, including wildlife movement, coastal California gnatcatcher and its habitat, and post-fire recovery. These studies help evaluate the overall ecological function of the preserve system and support broader regional studies being conducted by other agencies and institutions. Public Works Branch Environmental Management Department 1635 Faraday Avenue I Carlsbad, CA 92008 I 760-602-4689 t Council Memo -Habitat Management Plan Reporting (Districts -All) March 18, 2021 Page 2 The following highlights from 2020 were included in the reports and presented at the public meeting: • The HMP preserve system currently consists of 6,195 acres of permanently conserved native habitats, which is 96% of the required target acreage. The preserve consists of hundreds of individual parcels owned and managed as follows: o City of Carlsbad -10%, managed by Center for Natural Lands Management (CNLM) o Privately owned, actively managed -60%, managed by a variety of land managers o Privately owned or semi-public agencies, unmanaged -30% • The 307.6-acre Gnatcatcher Core Area obligation required by the HMP was fulfilled in total through the purchase of the remaining 12.9 acres of credit (coastal sage scrub habitat) through an agreement with the Wildlife Agencies and purchase of the Luchia Property, approved by City Council Resolution No. 2020-043, located just outside of the city's eastern boundary. • The 15.1-acre Aura Circle property was purchased with Proposition C funds, approved by City Council Resolution No. 2020-034. This property was fully entitled and ready for development when it was put on the market with a developable area of 5.6 acres and the remaining 9.5 acres planned for permanent open space. The city's purchase added 15.1 acres to the HMP preserve system and initiated long-term management on the entire property. • Ward's weed eradication program, approved by City Council Resolution No. 2019-194: Phase 1 (intensive treatment) ofthe Ward's weed eradication program was completed, and Phase 2 (surveillance and maintenance) has been initiated. • The city established a management fund for the Poinsettia Station Vernal Pool Preserve, approved by City Council Resolution No. 2018-091; responsible for land management; prepared a management plan and conducted surveys and intensive weed removal, the Wildlife Agencies authorized HMP coverage for six vernal pool species, many of which are state or federally endangered. • 2020 observations of note o Prairie false oat, thought to be extinct and historically only known from Mexico, was discovered by two botanists in Carlsbad o Although extremely rare in coastal San Diego County, there was a confirmed observation of a mountain lion in eastern Carlsbad Council Memo -Habitat Management Plan Reporting (Districts -All) March 18, 2021 Page 3 Next Steps The city will continue to partner with the Wildlife Agencies, preserve managers and private landowners to support the long-term survival of native species and habitats. Attachments: A. Carlsbad Habitat Management Plan Annual Report, Year 16 B. Triennial Biological Monitoring Report, through 2020 cc: Scott Chadwick, City Manager Celia Brewer, City Attorney Gary Barberio, Deputy City Manager, Community Services Laura Rocha, Deputy City Manager, Administrative Services Robby Contreras, Assistant City Attorney Kyle Lancaster, Parks & Recreation Director James Wood, Environmental Manager Rosanne Humphrey, Senior Program Manager City of Carlsbad Habitat Management Plan  Annual Report   Reporting Year 16, November 2019–October 2020  March 2021  Environmental Management  1635 Faraday Avenue  Carlsbad, CA 92008  Contact: Rosanne Humphrey, HMP Coordinator  ATTACHMENT A {'city of Carlsbad This page intentionally left blank  Acknowledgments:  Implementing Agreement Signatories:  U.S. Fish and Wildlife Service  California Department of Fish and Wildlife  Preserve Steward:  Alanna Sullivan – Environmental Science Associates  Preserve Managers:  California Department of Fish and Wildlife  Center for Natural Lands Management  Habitat Restoration Sciences, Inc.  Helix Environmental, Inc.  San Diego Habitat Conservancy  Urban Corps San Diego Habitat Services  Other Contributors:  Agua Hedionda Lagoon Foundation  Batiquitos Lagoon Foundation  Buena Vista Audubon  Preserve Calavera  This page intentionally left blank  Carlsbad HMP Annual Report, Reporting Year 16 i  March 2021  Table of Contents  Page  ACRONYMS AND DEFINITIONS .................................................................................... III  EXECUTIVE SUMMARY .................................................................................................. 1  1.0 PLAN ADMINISTRATION .......................................................................................... 3  1.1 INTRODUCTION ............................................................................................................ 3  1.2 HMP COMPLIANCE MONITORING AND EFFECTIVENESS MONITORING ...................................... 3  1.2.1 HMP Conservation Goals .................................................................................. 3  1.2.2 Compliance Monitoring .................................................................................... 4  1.2.3 Effectiveness Monitoring .................................................................................. 4  1.3 CURRENT STATUS OF PRESERVES ...................................................................................... 4  1.3.1 Categories of HMP Preserves ........................................................................... 4  1.3.2 Lake Calavera Mitigation Parcel ....................................................................... 8  1.3.3 Gnatcatcher Core Area Preservation Obligation Acreage ................................. 9  1.3.4 Habitat Mitigation Fee Program ..................................................................... 10  1.4 HABITAT GAINS AND LOSSES ......................................................................................... 10  1.4.1 Target Acreage ............................................................................................... 10  1.4.2 Land Acquisitions ............................................................................................ 11  1.4.3 Habitat Gains and Losses ................................................................................ 12  1.5 REGULATORY COMPLIANCE ........................................................................................... 12  1.5.1 HMP Amendments ......................................................................................... 13  1.5.2 City Compliance with Terms and Conditions of Take Authorization ............... 13  1.5.3 City Compliance with HMP Zone‐Wide Standards .......................................... 13  2.0 BIOLOGICAL MANAGEMENT AND MONITORING ................................................... 15  2.1 CONSEQUENCES OF THE COVID‐19 PANDEMIC .................................................................. 15  2.2 NOTABLE NEW SPECIES OBSERVATIONS ........................................................................... 15  2.2.1 Native Grass Species Thought to be Extinct .................................................... 16  2.2.2 Mountain Lion Observation ............................................................................ 16  2.3 INVASIVE SPECIES EARLY DETECTION AND RAPID RESPONSE ................................................. 16  2.3.1 Ward’s Weed Eradication Program ................................................................ 16  2.3.2  Other High Priority Invasive Species Surveillance .......................................... 17  2.4 LONG‐TERM BIOLOGICAL MONITORING ........................................................................... 18  3.0 FINANCIAL SUMMARY ........................................................................................... 21  3.1 CITY FUNDING IN SUPPORT OF HMP .............................................................................. 21  3.1.1 HMP Implementation ..................................................................................... 21  Carlsbad HMP Annual Report, Reporting Year 16 ii  March 2021  3.1.2 Habitat Mitigation Fees .................................................................................. 21  3.2 STATUS OF PRESERVE MANAGEMENT ENDOWMENTS ......................................................... 22  4.0 REFERENCES .......................................................................................................... 25  APPENDIX A. Regulatory Compliance Tables  APPENDIX B. Preserve‐Specific Summary of Management and Monitoring Activities   APPENDIX C. Triennial Long‐Term Biological Monitoring Report 2020  List of Figures  Page  Figure 1. Categories of HMP Preserves ............................................................................. 6  Figure 2. Current Condition of HMP Preserve System ..................................................... 14  List of Tables Table 1. Mitigation Acreage at Lake Calavera Mitigation Parcel ....................................... 9  Table 2. Status of Carlsbad HMP Gnatcatcher Core Area Obligation ................................. 9  Table 3. HMP Target Conservation of Habitats ............................................................... 11  Table 4. Habitat Mitigation Fee Fund Activity ................................................................. 22  Table 5. Endowment Status for HMP Preserves .............................................................. 23  Carlsbad HMP Annual Report, Reporting Year 16 iii  March 2021  Acronyms and Definitions           Annual Reports – Preserve‐specific annual reports, which summarize management and  monitoring activities, threats, and monitoring results, are due in November of every year.  Pre‐HMP preserves are generally not required to prepare annual reports unless stipulated  in previously negotiated agreements with the city and/or Wildlife Agencies. HMP‐wide  annual reports (e.g., the current report) are due to the Wildlife Agencies in December of  every year. HMP annual reports summarize gains and losses in the HMP preserve system,  current status of individual preserves and species, management and monitoring activities,  and a financial summary. Every third year, the HMP annual report includes an analysis of  species monitoring data. The latest 3‐year report was prepared as part of the 2016/2017  HMP annual report.  ASMD – Area Specific Management Directive  BLF – Batiquitos Lagoon Foundation  Caltrans – California Department of Transportation. Caltrans is responsible for design,  construction, maintenance and operation of the California State Highway System and  Interstate Highway segments within the state's boundaries.  City – City of Carlsbad  CDFW – California Department of Fish and Wildlife (formerly CDFG – California Department of  Fish and Game)  CNDDB – California Natural Diversity Database, operated and maintained by CDFW  CNLM – Center for Natural Lands Management, a non‐profit organization that provides  management and biological monitoring of mitigation and conservation lands in perpetuity  Compliance Monitoring – Monitoring to determine if the HMP is being properly implemented  pursuant to the Implementing Agreement and state and federal take  authorizations/permits  Conservation Easement (as defined in California Civil Code Section 815.1) – Any limitation in a  deed, will or other instrument in the form of an easement, restriction, covenant or  condition, which is or has been executed by or on behalf of the owner of the land subject  to such easement and is binding upon successive owners of such land, and the purpose of  which is to retain land predominantly in its natural, scenic, historical, agricultural, forested  or open‐space condition  Critical Location – An area that must be substantially conserved for a particular sensitive species  to be adequately conserved by the MHCP. Critical locations often coincide with major  populations of the same sensitive species, but not all major populations are considered  critical.   Carlsbad HMP Annual Report, Reporting Year 16 iv  March 2021  Edge Effects – Impacts to natural open space resulting from adjacent, contrasting environments,  such as developed or disturbed land. When an edge is created, the natural ecosystem is  affected for some distance in from the edge.  Effectiveness Monitoring – Monitoring habitat and species to determine if the HMP is protecting  sensitive biological resources as planned and if any adaptive management is needed  EMP – SANDAG’s TransNet Environmental Mitigation Program, a funding allocation category for  the costs to mitigate habitat impacts for regional transportation projects. Funding grants  from this program may be used for habitat acquisition, management, and monitoring  activities as needed to help implement the MHCP.  ESA – Endangered Species Act  Existing Hardline Preserve Areas – Natural habitat open space areas, such as Ecological Reserves  and Dawson‐Los Monos Reserve that were preserved prior to final approval of the HMP, or  areas that were previously Proposed Hardline Areas or Standards Areas that have secured  preservation, long‐term management and monitoring, and a non‐wasting endowment to  fund activities in perpetuity  FPA – Focused Planning Area  GIS – Geographic Information System  Gnatcatcher Core Area – An area identified in the MHCP that is considered critical to the recovery  of the coastal California gnatcatcher. Approximately 500 acres of core habitat must be  conserved by the MHCP jurisdictions as a condition of coverage for gnatcatcher. Although  the core area is located outside of the City of Carlsbad, the city is responsible for 307.6 acres  of conservation.  Habitrak – A GIS‐based tool that was developed and is maintained by CDFW for habitat  accounting. The tool calculates the acreage, type and location of vegetation communities  that are gained (conserved), or lost (impacted) from the HMP planning area.  HCP – Habitat Conservation Plan, a planning document required as part of an application for an  incidental take permit from the USFWS that describes the anticipated effects of the  proposed taking, how those impacts will be minimized or mitigated, and how the HCP is to  be funded  HMP – Habitat Management Plan; serves as the MHCP Subarea Plan for the City of Carlsbad  HMP Hardline– an HMP Hardline is a preserve that has been set aside for permanent conservation  and is protected by a conservation easement, which runs permanently with the land.  Hardline properties cannot be developed.  HOA – Homeowners’ Association  HRS – Habitat Restoration Sciences, Inc., a for‐profit native habitat restoration and general  engineering firm specializing in installation and long‐term maintenance of natural areas  Carlsbad HMP Annual Report, Reporting Year 16 v  March 2021  Implementing Agreement – The legal agreement between the City of Carlsbad, CDFW, and  USFWS that ensures implementation of the Carlsbad HMP binds each of the parties to  perform the obligations, responsibilities and tasks assigned and provides remedies and  recourse should any of the parties fail to perform  IPM – Integrated Pest Management, a science‐based, decision‐making process that combines  biological, physical and chemical tools in a way that achieves control objectives while  minimizing economic, health, and environmental risk  Landowner – The legal entity that owns the land in fee‐title. The landowner has the ultimate  responsibility to ensure that preserve management is secured prior to habitat impacts.  Often, the management responsibility is contracted to a third party.   LFMZ – Local Facility Management Zone, one of 25 Growth Management Plan sub‐areas the City  of Carlsbad used for planning and financing infrastructure improvements and other city  services and facilities concurrent with development  Major Population – A population of sensitive species considered sufficiently large to be self‐ sustaining with a minimum of active or intensive management intervention (especially for  plants) or that at least supports enough breeding individuals to contribute reliably to the  overall meta‐population stability of the species (especially for animals). A Major Population  also includes smaller populations that are considered important to long‐term species  survival.  Management Unit – Groupings of adjacent or nearby preserve parcels that have similar  management needs  MHCP – Multiple Habitat Conservation Program, a subregional conservation plan prepared and  administered by SANDAG that encompasses the cities of Carlsbad, Encinitas, Escondido,  Oceanside, San Marcos, Solana Beach and Vista. The goal of the MHCP is to conserve  approximately 19,000 acres of habitat and contribute toward the regional habitat preserve  system for the protection of more than 80 rare, threatened, or endangered species. The  MHCP serves as an umbrella framework to guide the preparation of city‐specific plans such  as the Carlsbad Habitat Management Plan.  NCC – Natural Communities Coalition, a non‐profit group in Orange County whose main purpose  is to coordinate the land management, monitoring, and research across the approximately  38,000‐acre Reserve System  NCCP – Natural Community Conservation Planning, a program of CDFW that takes a broad‐based  ecosystem approach to planning for the protection and perpetuation of biological diversity  throughout the state. The MHCP is a sub‐regional component of the statewide NCCP.  Non‐Wasting Endowment – An endowment with sufficient principal that provides for the setup  costs and management/monitoring of a preserve in perpetuity through investment returns.  The endowment is designed to increase in value over time for the generated revenues to  increase, and thus keep pace with inflation. Pre‐HMP preserves generally did not require  Carlsbad HMP Annual Report, Reporting Year 16 vi  March 2021  endowments to fund management, unless specified in a previously negotiated agreement  with the city and/or Wildlife Agencies.  OSMP – Open Space Management Plan, which serves as the Preserve Management and  Monitoring Plan referenced in Section 12.3 of the Implementing Agreement  PAR – Property Analysis Record, a cost analysis that estimates the management and monitoring  costs of a specific preserve in perpetuity, often in the form of an endowment to fund long‐ term management. A PAR is based on industry‐accepted parameters, allows an objective  cost/benefit analysis for each line item, and adjusts for inflation.  PMP – Area‐specific preserve management plan, the permanent management plan developed for  a particular preserve within the preserve system. The city has contracted CNLM to develop  a master PMP for all city‐owned preserves that addresses each preserve individually.  Preserve – Land conserved with a conservation easement, restrictive covenant, deed restriction,  or transfer of fee‐title to the city or CDFW that is being managed to HMP and MHCP  standards. (Note: Lands already set aside for preservation through an open space easement  prior to HMP adoption have limited management activities until a regional funding source  is available).  Preserve Manager – The entity responsible for monitoring and managing the preserve. The  majority of preserve lands are owned/managed by the city, CDFW, CNLM, or private HOAs.  Pursuant to state due‐diligence legislation that took effect January of 2007, preserve  managers must be certified by either the city or CDFW before they can begin managing  lands in the city.  Priority Species – Sensitive species that have site‐specific permit conditions requiring populations  to be tracked individually using GIS  Proposed Hardline Preserve Areas – Areas identified in the HMP as natural habitat open space  that were proposed for permanent conservation and perpetual management during the  design phase of development projects but not completed prior to final approval of the HMP  RY – Reporting Year, or from November 1 to October 31  Rough Step Assembly – A policy that requires development (losses) occur in “rough step” with  land conservation (gains) during preserve assembly to ensure that development does not  greatly outpace land conservation. It is generally understood by the Wildlife Agencies that  losses should be no more than 10% greater than gains  SANDAG – San Diego Association of Governments. SANDAG is the San Diego region’s primary  public planning, transportation, transit construction and research agency, providing the  public forum for regional policy decisions about growth, transportation planning and transit  construction, environmental management, housing, open space, energy, public safety and  binational topics  SDG&E – San Diego Gas and Electric  Carlsbad HMP Annual Report, Reporting Year 16 vii  March 2021  SDHC – San Diego Habitat Conservancy, a non‐profit organization that provides management and  biological monitoring of mitigation and conservation lands in perpetuity. Prior to February  of 2009, SDHC was called Helix Community Conservancy.  SDMMP – San Diego Management and Monitoring Program, a science‐based program that  provides a coordinated approach to management and biological monitoring of lands in San  Diego that have been conserved through various programs, including the Multiple Species  Conservation Program, the MHCP, the TransNet Environmental Mitigation Program, and  various other conservation and mitigation efforts  Standards Areas – Areas that were included in the MHCP Focused Planning Area (i.e., considered  high priority for inclusion into the preserve system), but for which projects had not been  proposed prior to the city’s HMP approval. Because potential protected habitat areas had  not been delineated, a set of zone‐specific conservation standards were established as a  condition of future project approval.  T&C – Terms and Conditions  Take – As defined in the Federal Endangered Species Act; to harm, harass, pursue, hunt, shoot,  wound, kill, trap, capture, or collect a listed species or attempt to do so, including impacts  to the habitats upon which these listed species depend  TET – The Environmental Trust. TET was a habitat management company that owned and  managed several preserves in Carlsbad until declaring bankruptcy in 2005. Their properties  were unmanaged until CDFW acquired title and management responsibility in early 2010.    TransNet ‒ The San Diego County half‐cent sales tax for transportation improvements first  approved by voters in 1988 and extended in 2004. The EMP is a component of TransNet  that funds habitat‐related environmental mitigation activities required to implement  projects identified in SANDAG’s Regional Transportation Plan, including a funding allocation  for habitat acquisition, management, and monitoring activities as needed to help  implement the Multiple Species Conservation Program and the MHCP.   UC ‒ Urban Corps Habitat Services, a non‐profit organization that provides management and  biological monitoring of mitigation and conservation lands in perpetuity  USACE – U.S. Army Corps of Engineers  USFWS – U.S. Fish and Wildlife Service  Wildlife Agencies – Term used collectively for CDFW and USFWS     Carlsbad HMP Annual Report, Reporting Year 16 viii  March 2021                  This page intentionally left blank    Carlsbad HMP Annual Report, Reporting Year 15 E‐1 March 2021 Executive Summary    Covering the period from November 1, 2019 to October 31, 2020, this sixteenth annual Habitat  Management Plan (HMP) report summarizes the preserve status, implementation activities, and  preserve gains and losses that have occurred during the current reporting period. Highlights of  the HMP activities are summarized below.    Current Status of Preserves  The existing preserves continued to be managed, monitored, and/or maintained during the  reporting period. Established private and city‐owned Hardline Preserves were managed and  monitored in accordance with their approved preserve management plans; California Department  of Fish and Wildlife (CDFW) preserves were managed subject to available funding and resources;  and pre‐existing natural open space areas were maintained according to their respective Open  Space Easements and/or Covenants, Conditions, and Restrictions, if applicable. Descriptions of  the different categories of preserves are contained in Section 1.3.     Two properties changed from Proposed Hardline to Existing Hardline with established long‐term  management since the last HMP Annual Report. The 15.1‐acre Aura Circle property was  purchased by the city, adding 5.6 acres of previously developable land to the HMP, and the San  Diego Habitat Conservancy began long‐term management of the 173‐acre Bressi Ranch Preserve.    Lake Calavera Mitigation Parcel   During the reporting period, there were no debits from the mitigation parcel. To date, cumulative  debits and adjustments for wetland mitigation sites are 94.9 acres, leaving a total of 111.2 acres  (credits) remaining.    Gnatcatcher Core Area Conservation Obligation  On February 25, 2020, the City Council authorized payment in the amount of $1,104,114 to  purchase the remaining 12.93 acres of Gnatcatcher Core Area credits on the Luchia Property,  which is located just east of the city boundary in the Core Area. The Gnatcatcher Core Area  obligation has now been met in full.  Land Acquisitions  During the reporting period, two properties were acquired by the city using Proposition C funds:  1.3‐acre Paseo del Norte Property (pre‐existing hardline and 15.1‐acre Aura Circle Property (9.5  acres of Proposed Hardline and 5.6 acres of developable land).      Carlsbad HMP Annual Report, Reporting Year 15 E‐2 March 2021 Habitat Gains and Losses  A total of 5.6 acres of habitat was gained as part of the Aura Circle land purchase. There were no  losses during the reporting period.     Regulatory Compliance  Minor Amendments: During the reporting period, there were no HMP Minor Amendments.    Preserve Management and Monitoring  Ongoing management and monitoring activities in HMP preserves conducted this year included  invasive species monitoring and control, installation and maintenance of fences and signage, rare  plant counts and habitat assessments, vegetation mapping, sensitive bird species surveys, wildlife  movement monitoring, and public outreach activities, which are summarized in Appendix B.  Highlights discussed in Section 2.1 of this report include consequences of COVID‐19, notable new  species observations (native grass thought to be extinct and mountain lions), completion of Phase  1 of the Ward’s Weed Eradication Program, and other invasive species monitoring. In addition,  the 2020 triennial biological monitoring report was completed and is included in Appendix C.      Financial Summary  Habitat Mitigation Fee Program: A total of $29,998.15 of in‐lieu mitigation fees was collected  during the past year. On February 25, 2020, the City Council authorized payment of $1,104,114 to  purchase the remaining 12.93 acres of Core Area Credit, which was taken from the General Fund  Account because there were not sufficient funds in the Mitigation Fee Account to cover the cost.  The current balance of the Habitat Mitigation Fee Fund is ‐$1,244,016, which will be paid off  through future fees.  Preserve Management Endowments: During the reporting period, a total of $793,633 was spent  by the land managers on management and monitoring activities on 24 preserves and  endowments for these properties (not including most lands owned by the city) totaled  $17,851,104.    Carlsbad HMP Annual Report, Reporting Year 16 3 March 2021  1.0 Plan Administration    1.1 Introduction   The Habitat Management Plan (HMP) is a citywide conservation plan that describes how the city  will comply with state and federal environmental laws while remaining consistent with the city’s  General Plan and Growth Management Plan. The HMP was developed in coordination with the  U.S. Fish and Wildlife Service and California Department of Fish and Wildlife (collectively, the  Wildlife Agencies) as part of a regional planning effort under the North County Multiple Habitat  Conservation Program (MHCP). Annual tracking and reporting of habitat gains, losses,  management, and monitoring is required by Sections 12.1 and 12.2 of the Implementing  Agreement (Nov. 12, 2004); the Federal Fish and Wildlife 10(a)(1)(B) Permit No. TE022606‐0 (Nov.  12, 2004); and the NCCP Permit No. 2835‐2004‐001‐05 (Nov. 15, 2004). This annual report covers  year 16 of the 50‐year HMP permit period.     1.2 HMP Compliance Monitoring and Effectiveness Monitoring   1.2.1 HMP Conservation Goals  To evaluate the city’s compliance with the HMP and the effectiveness of the MHCP/HMP program  with respect to natural resources protection, it is necessary to understand the underlying goals of  the plan, which are summarized below (see HMP p. A‐2 for a complete list):   Conserve the full range of vegetation community types, with a focus on sensitive habitat  types.   Conserve populations of narrow endemic species and other covered species.   Conserve sufficient habitat, functional biological cores, wildlife movement corridors, and  habitat linkages, including linkages that connect coastal California gnatcatcher (Polioptila  californica californica) populations and movement corridors for large mammals, to  support covered species in perpetuity.   Apply a “no net loss” policy to wetlands, riparian habitats, and oak woodlands.   Implement appropriate land use measures to ensure the protection of preserve lands in  perpetuity.   Meet conservation goals stated above while accommodating orderly growth and  development in the city.   Coordinate and monitor protection and management of conserved lands within the  preserve system.   Minimize costs of Endangered Species Act related mitigation and HMP implementation.    Carlsbad HMP Annual Report, Reporting Year 16 4 March 2021  1.2.2 Compliance Monitoring  Compliance monitoring is required by the HMP‐related permits and Implementing Agreement to  ensure that the city is doing what it agreed to do from a regulatory perspective, such as conserving  particular species locations and acres of habitat, monitoring the condition of the habitat and  species, and performing required management actions (MHCP Vol. I). The preserve steward  assists the city by working with the preserve managers to ensure coordinated management across  the city. Habitat tracking results are provided in Section 1.4; regulatory compliance is discussed in  Section 1.5 and Appendix A; and management and monitoring activities are summarized in  Section 2.0 and Appendix B, and the Triennial Monitoring Report is included in Appendix C.    1.2.3 Effectiveness Monitoring  Effectiveness monitoring, also known as biological, ecological, or validation monitoring,  determines the effectiveness of the conservation program by evaluating if the preserve assembly  and management actions are achieving the HMP/MHCP goals within the city and across the MHCP  planning area. The preserve‐level monitoring program is used to evaluate the effectiveness of  management at specific preserve areas (MHCP Vol. III). At the subregional (MHCP‐wide) level,  effectiveness monitoring evaluates the status and trends in populations of covered species, and  assessing how well the conservation strategy is working to maintain natural ecological processes  (MHCP Vol. III).     Monitoring the effectiveness of the MHCP and HMP is more challenging than compliance  monitoring because the biological goals are broad and it may take many years or decades before  trends in species populations and habitat conditions are detectable. Species and habitat  monitoring, and monitoring to evaluate the effectiveness of management are being conducted  on individual preserves as well as the regional landscape level. This work is being done through a  partnership with the city, preserve steward, preserve managers, Wildlife Agencies and San Diego  Management and Monitoring Program, which has developed regional and site‐specific monitoring  and management strategic plans and protocols for conserved lands across San Diego County.    1.3 Current Status of Preserves  This section contains: (1) a description of the different categories of preserves within the HMP  preserve system, (2) an accounting of the mitigation credits at the city’s Lake Calavera Mitigation  Parcel, (3) the status of the city’s Gnatcatcher Core Area conservation obligation, and (4) the status of  the HMP Mitigation Fee Fund.     1.3.1 Categories of HMP Preserves  Lands within the HMP preserve system can be grouped into four categories: (1) established  private and city‐owned Hardline Preserves; (2) CDFW Ecological Reserves; (3) pre‐existing natural  Carlsbad HMP Annual Report, Reporting Year 16 5 March 2021  open space preserves; and (4) future preserves (Proposed Hardline Preserves and Standards  Areas). These categories of preserve lands are distinguished by the level of management,  ownership, and/or status as described below and shown in Figure 1.    Established Private and City‐Owned Hardline Preserves  These Hardline Preserves were established during or after the adoption of the HMP. They have  approved preserve management plans implemented by preserve managers and are funded through  non‐wasting endowments or, in the case of the city‐owned preserves, through annual budget  appropriations. The city requires site specific annual reports for these preserves. The property owners  for these preserves are a preserve management entity, homeowners association (HOA), or the city.  Except for the city‐owned properties, these Hardline Preserves are protected by  recorded  conservation easements. Examples of these preserves include Rancho La Costa, Carlsbad Oaks North,  Lake Calavera and the Crossings Golf Course, among others.     California Department of Fish and Wildlife Ecological Reserves  These Hardline Preserves were established prior to or subsequent to the adoption of the HMP  and are all owned by the State of California. According to the HMP Implementing Agreement, the  level of management and monitoring of the CDFW preserves is based upon the available state  funding and resources. Except for the Buena Vista Creek Ecological Reserve, there are currently  no finalized long‐term management plans for the CDFW Ecological Reserves in Carlsbad.  Management is guided by draft plans, which have not been submitted to the city. CDFW obtains  State Wildlife Grant funding annually for management and monitoring activities on CDFW’s  preserves. Management accounts have been established for Carlsbad Highlands Ecological  Reserve and Agua Hedionda Lagoon Ecological Reserve. The Batiquitos Lagoon Ecological Reserve  is managed and monitored by CDFW and funded through a mitigation account established by the  Port of Los Angeles and held by CDFW. The Buena Vista Creek Ecological Reserve is managed by  Center for Natural Lands Management (CNLM), a non‐profit land management entity, through  a contract and funded by a non‐wasting endowment held by CNLM. The city receives some  CDFW monitoring data for the lagoon preserves and a CNLM‐prepared annual report for the  Buena Vista Creek Ecological Reserve.       78 5 BUENAVISTALAGOON AGUAHEDIONDALAGOON BATIQUITOS LAGOON PACIFIC OCEAN BUENA VISTA CREEK AGUA HE DI O N D A C R E E K SAN MARCOS CREE K OCEANSIDE VISTA ENCINITAS 0 6,400 FeetI City of CarlsbadCategories of HMP Preserves Legend Established Private and City-owned Preserve California Department of Fish and Wildlife Ecological Reserve Pre-existing Natural Open Space Preserve Future Preserve Proposed Hardline Future Preserve Standards Area Figure 1 Date: 1/12/2021Document Path: \\shares\GIS_App\RequestsMarch2015\PublicWorks\PEM\MuniProp\RITM0020672_20\Working Map\Working.aprx 1111 1111 1111 1111 ~ C cityof Carlsbad Ca rlsbad f'f ,,----✓---~-_,,,_,----L_, ______ _,, ' ,, ... ,/ ,-' .,....._.,., Carlsbad HMP Annual Report, Reporting Year 16 7 March 2021  Pre‐Existing Natural Open Space Preserves  These Hardline Preserves predate the HMP and are composed of natural open space areas within  subdivisions or master plan communities (owned by the respective HOA), the University of  California’s Dawson‐Los Monos Reserve, and areas owned by Cabrillo Power, San Diego Gas and  Electric (SDG&E), and the San Dieguito Union High School District. The lands were included in the  HMP because of their biological resources and ecological value. There are no preserve  management plans or active management and monitoring associated with these preserves, and  maintenance of the property is the responsibility of the property owner. Generally, management  consists of trash pickup and fence maintenance. The HMP envisioned that future management  and monitoring of these lands would be financed through a regional funding source. The  preserves owned by HOAs are protected by an Open Space Easement. The Dawson‐Los Monos  Reserve is owned by the Regents of University of California and has no open space or conservation  easement protection. Examples of the HOA‐owned preserves include Calavera Hills Phase I,  Aviara, and Arroyo La Costa.    Future Preserves (Proposed Hardline Preserves and Standards Areas)  These preserves are identified in the HMP and are associated with developable lands but have yet  to begin management and monitoring. As a condition of approval for any development on the  property, the developer is obligated to establish the preserve by preparing a preserve  management plan approved by the city and Wildlife Agencies, contracting with a qualified land  manager, funding a non‐wasting endowment or other secure financing mechanism, and recording  a conservation easement. An HMP Minor Amendment ‐ Equivalency Finding, approved by the city  and Wildlife Agencies, is required for any alterations to the Proposed Hardline Preserve boundary,  and the final preserve design for Standards Areas must be approved by the city and Wildlife  Agencies through an HMP Minor Amendment ‐ Consistency Finding. Examples of these future  preserves include Mandana and Kato.     Two properties changed from Proposed Hardline to Existing Hardline with established long‐term  management since the last HMP Annual Report. The city purchased the 15.1‐acre Aura Circle  property in February, 2020 and placed it under long‐term management by Center for Natural  Lands Management. Originally proposed for 9.5 acres of preserved open space, the city will gain  an additional 5.6 acres of HMP hardline by converting the developable acreage on the property  to preserved open space (see Section 1.4.2 for more details). In December 2020, San Diego Habitat  Conservancy took over long‐term management of the 173‐acre Bressi Ranch Preserve. Active  management of this preserve will be critical in our efforts to combat Ward’s weed (Carrichtera  annua), since approximately 87% of the infestation in Carlsbad occurs on the Bressi Ranch  Preserve (see  Section 2.3.1 for more details).     Carlsbad HMP Annual Report, Reporting Year 16 8 March 2021        1.3.2 Lake Calavera Mitigation Parcel  The city‐owned Lake Calavera Mitigation Parcel, also known as the Lake Calavera Preserve,  provides mitigation as needed for upland habitat impacts related to city construction projects.  Credits are deducted on an acre‐for‐acre basis, regardless of the type of habitat being impacted,  except for impacts to gnatcatcher‐occupied coastal sage scrub, southern maritime chaparral, and  maritime succulent scrub. No credits can be sold to outside entities.     The HMP (Section D.3.B) states that there are 266.1 available acres on Lake Calavera Preserve and  the Implementing Agreement (Section 10.7) states that there are 206.1 acres. The Wildlife  Agencies and city have agreed to use the more conservative 206.1 acres stated in the  Implementing Agreement for tracking purposes.     In addition to the use of the Lake Calavera Mitigation Parcel for upland mitigation credits, the city  also uses the property for wetland mitigation through active habitat creation, restoration, and/or  enhancement of disturbed areas within the preserve, in coordination with the Wildlife Agencies  and wetland permitting agencies. Once an area has been mapped and identified as mitigation for  a city project, it is no longer eligible for future mitigation credits, and the acreage of the mitigation  site is debited from the available balance. During the reporting period, there were no debits.  Cumulative upland debits and adjustments for wetland mitigation sites to date are 94.9 acres,  leaving a total of 111.2 acres (credits) remaining (see Table 1).    Palomar Airport Rd .... ., Carlsbad HMP Annual Report, Reporting Year 16 9 March 2021  Table 1. Mitigation Acreage at Lake Calavera Mitigation Parcel RY 16 (2019–2020)    Credits and Debits Acres1  Initial Credits 206.1  Total acres available as of November 1, 2019 111.2  Year 16 Deductions (Nov. 2019–Oct. 2020) 0.0  Total acres available as of October 31, 2019 111.2  1 Rounded to the nearest tenth of an acre.      1.3.3 Gnatcatcher Core Area Preservation Obligation Acreage  When the HMP was being developed, the Wildlife Agencies determined there was not enough  coastal sage scrub habitat in the city to conserve the coastal California gnatcatcher. Because of  this limitation, the city was required to preserve an additional 307.6 acres of coastal sage scrub in  the Gnatcatcher Core Area, a large block of high quality habitat southeast of the city, which is  regionally important for the long‐term survival of the species.     On February 25, 2020, the City Council authorized payment in the amount of $1,104,114 to  purchase the remaining 12.93 acres of Gnatcatcher Core Area credits on the Luchia Property,  which is located just east of the city boundary in the Core Area. This payment provided by the city  was used to establish long‐term management on the 40‐acre property ($755,273), and contribute  toward the purchase price of the property ($348,840) as part of an agreement between the city,  U.S. Fish and Wildlife Service (USFWS), CDFW, and CNLM. As of April 3, 2020, the land purchase  has been completed and long‐term management has been initiated. As documented in a letter  from the USFWS and CDFW dated December 19, 2019, the city has now fulfilled its Gnatcatcher  Core Area obligation in full. Table 2 shows the status of Core Area conservation credits.     Table 2. Status of Carlsbad HMP Gnatcatcher Core Area Obligation through RY 16 (2019–2020)    Core Area Components Acres  Total Core Area Conservation Requirement 307.6   Core Area Credits Acquired as of November 1, 2019 294.7   Core Area Credits Acquired in RY 16 (2019‐2020) 12.9  Remaining Core Area Conservation Requirement 0.0    Carlsbad HMP Annual Report, Reporting Year 16 10 March 2021  1.3.4 Habitat Mitigation Fee Program  The purchase of Gnatcatcher Core Area credits is funded through the Habitat Mitigation Fee  Program (called the In‐lieu Mitigation Fee Program in the HMP). Project impacts to certain upland  habitat types require a mitigated fee, which is deposited into the Habitat Mitigation Fee Fund.  These funds can only be used to offset the cost of Gnatcatcher Core Area conservation. A total of  $29,998 of in‐lieu mitigation fees was collected during the reporting period, and $1,104,114 was  expended during the reporting period. A detailed accounting of the in‐lieu mitigation fees and  expenditures is given in Section 3.1.2.    1.4 Habitat Gains and Losses  Pursuant to the HMP and Implementing Agreement, the city is required to provide an annual  accounting of the amounts and locations of habitat lost and conserved over time due to public  and private development projects and land acquisition. This information will be used to  demonstrate to the Wildlife Agencies that: (1) the HMP preserve is being assembled as  anticipated; (2) the habitat conservation goals of the HMP are being achieved; and (3) habitat  conserved is in rough step with development. HabiTrak is a GIS database tool that was designed  to satisfy these tracking and reporting requirements by providing standard tracking protocols and  reporting output. It uses standard baseline spatial databases (e.g., vegetation, preserve  boundaries, and parcel boundaries) and development project footprints to prepare standardized  tables and maps for annual reporting.     1.4.1 Target Acreage  Some of the habitat types used in the standard HabiTrak table outputs are more specific than  those used in HMP Table 8. To make it easier to compare the Habitrak tables with the HMP table  for compliance monitoring, Table 3 below lists acres of target conservation and compares habitat  categories in HMP Table 8 to categories used in HabiTrak. Note that the GIS data layers used for  this analysis included the more detailed habitat categories.     Carlsbad HMP Annual Report, Reporting Year 16 11 March 2021  Table 3. HMP Target Conservation of Habitats  (Comparison of Habitat Categories in HMP and Habitrak)    HMP Table 8 Habitrak  Habitat Type Target  Acres1 Habitat type Target  Acres1  Coastal sage scrub 2,139  Maritime succulent scrub 29  Coastal sage scrub 2,003  Coastal sage‐chaparral scrub 107  Subtotal  2,139  Chaparral 676 Chaparral 676  Southern maritime chaparral 342 Southern maritime chaparral 342  Oak woodland 24 Coast live oak 20 Other oak woodland 4  Subtotal 24  Riparian 494  Riparian forest 82  Riparian woodland 17  Riparian scrub 395  Subtotal 494  Marsh 1,252  Southern coastal salt marsh 143  Alkali marsh 9  Freshwater marsh 165  Freshwater 53  Estuarine 789  Disturbed wetland 93  Subtotal 1,252  Grassland 707 Grassland 707  Eucalyptus woodland 99 Eucalyptus woodland 99  Disturbed lands 745  Agriculture 185  Disturbed Land 244  Developed 316  Subtotal 745  Total Target Conservation  within Carlsbad    6,4782  Total Target Conservation  within Carlsbad    6,4782  Carlsbad’s Gnatcatcher Core  Area Contribution    308 Not tracked in Habitrak N/A  Total HMP Target  Conservation    6,7862    1 Rounded to the nearest acre. 2 Note that the target acreage includes 100% of all Standards Area parcels. However, a portion of these parcels  are expected to be developed; therefore, the final total will be slightly less than the target value.     1.4.2 Land Acquisitions  During the reporting period, two properties were acquired using Proposition C funds. In Carlsbad,  the City Council cannot authorize the spending of more than $1 million of general fund money for  property acquisition or improvements without prior approval from voters. In 2002, voters  Carlsbad HMP Annual Report, Reporting Year 16 12 March 2021  passed Proposition C, which allowed the City Council to exceed the $1 million amount on four  projects, including the purchase of land from willing sellers for open space/trails purposes.     Paseo del Norte Property  On November 12, 2019, the City Council authorized the purchase of the 1.3‐acre Paseo del Norte  Preserve property, located between I‐5 and Paseo del Norte, south of Palomar Airport Road. The  disturbed wetlands onsite provide an opportunity for wetland mitigation credits within the  coastal zone, which can be difficult to find. The potential mitigation credits are expected to be  used for city infrastructure projects. This land acquisition will not add acreage to the HMP  preserve system, as it was already designated as a pre‐existing hardline.    Aura Circle Property  On February 11, 2020, the City Council authorized the purchase of the 15.1‐acre Aura Circle  property, located south of the Tamarack Avenue‐El Camino Real intersection. The property  initially consisted of 9.5 acres of Proposed Hardline and 5.6 acres of developable land zoned for  single family residential homes. The entire property is now under long‐term management by  CNLM; 5.6 acres have been added to the HMP preserve system; and the entire property will now  be designated as “Existing Hardline” (permanently conserved).     1.4.3 Habitat Gains and Losses   During RY 16 (2019–2020) a total of 5.6 acres of habitat was gained (permanently protected and  added to HMP preserve system) from the purchase of the Aura Circle property, as discussed  above. Zero acres were lost (impacted). Since adoption of the HMP, 6,195 acres have been gained  and 1,760 acres have been lost. Figure 2 shows the status of the preserve system.    1.5 Regulatory Compliance   To ensure regulatory compliance, the city is implementing the HMP: (1) through the project  review process for new development projects; (2) by issuing HMP permits when impacts to habitat  or covered species are involved; (3) by issuing incidental take permits when take of a listed  species is involved; and (4) by ensuring consistency with the terms and conditions of the  Implementing Agreement, and State NCCP and Federal Fish and Wildlife permits.    Carlsbad HMP Annual Report, Reporting Year 16 13 March 2021  1.5.1 HMP Amendments   Amendments processed during the reporting period are described below. See HMP Section E‐3  and Implementing Agreement Section 20.1 for a description of Minor Amendment types and the  HMP amendment process.    1. Consistency Finding: During the reporting period, no minor amendments were processed  through a Consistency Finding.  2. Equivalency Finding: During the reporting period, no minor amendments were processed  through an Equivalency Finding.  3. Other Minor Amendments (pursuant to Section 20.1 of the Implementing Agreement):  No other minor amendments were processed during the reporting period.    1.5.2 City Compliance with Terms and Conditions of Take Authorization   To satisfy the terms and conditions of the state and federal take authorization, the city is required  to fulfill the obligations outlined in Sections 10‐14 of the Implementing Agreement, the Conditions  of the State NCCP Permit, and Terms and Conditions of the Federal ESA Section 10(a)(1)(B)  Incidental Take Authorization/Permit. Implementation tasks associated with these regulations are  completed or ongoing, and are described in Appendix A.     1.5.3 City Compliance with HMP Zone‐Wide Standards  The city is also required to ensure that all projects within Standards Areas comply with the zone‐ specific standards outlined in HMP Section D (Table 8). All projects that occur within a Standards  Area are processed with a Consistency Finding. During this process, projects must demonstrate  compliance with the standards before they receive concurrence from the Wildlife Agencies and  are approved by the city; therefore, all approved development within Standards Areas is  consistent with the HMP. Appendix A summarizes property‐specific and linkage‐related standards  and current status. Refer to HMP Section D pages D‐73 through D‐82 for additional zone‐specific  standards.  78 5 BUENAVISTALAGOON AGUAHEDIONDALAGOON BATIQUITOS LAGOON PACIFIC OCEAN BUENA VISTA CREEK AGUA HE DI O N D A C R E E K SAN MARCOS CREE K OCEANSIDE VISTA ENCINITAS 0 6,400 FeetI City of Carlsbad2020 Current Conditions Legend Existing Hardline Proposed Hardline Standards Area Figure 2 Date: 1/12/2021Document Path: \\shares\GIS_App\RequestsMarch2015\PublicWorks\PEM\MuniProp\RITM0020672_20\Working Map\Working.aprx -- C cityof Carlsbad Ca rlsbad (; r,_,,-L-.... __,._,,v-\ ,.,.----✓,,--_,,... __ , ,, ... ,/ ,-' .,....._.,., Carlsbad HMP Annual Report, Reporting Year 16 15 March 2021  2.0 Biological Management and Monitoring     The Wildlife Agencies have issued permits to jurisdictions and participating landowners for  implementation of regional conservation plans like the HMP throughout California to address the  development, conservation, and land management activities of conserved lands. One of the  primary commitments made by permittees is to maintain the long‐term habitat value of the  preserve system and its ability to support viable populations of covered species. This section  highlights some of the monitoring and management activities conducted by the HMP Division that  took place during the reporting period and summarizes the Triennial Long‐term Monitoring  Report (included in its entirely in Appendix C). Appendix B includes a preserve‐by‐preserve  summary of activities conducted by preserve managers and environmental organizations.     2.1 Consequences of the Covid‐19 Pandemic  Most biological monitoring and management occurs during the spring and summer, generally  between February and July. In 2020, many activities had to be postponed or canceled due to the  COVID‐19 pandemic, including a planned expansion of the HMP volunteer program. The goal of  the volunteer program is to protect native habitat and species on unmanaged preserves by  performing invasive species removal, installation of interpretive signage, repairing habitat  damaged from unauthorized trail use, and other management tasks. Long‐term monitoring, such  as wildlife movement studies, was ongoing but reduced in 2020. Implementation of a newly  developed inspection program was also postponed. The purpose of the inspection program is to  evaluate the condition of the unmanaged preserves, identify threats, and prioritize potential  remedial management actions.    Another outcome of the pandemic was heavy use of the outdoors by the public, which resulted  in significant damage to native habitat and rare plants from off‐trail use. Enjoying the outdoors  was one of the few things residents could safely do, and many people had more free time than  usual. The unmanaged preserves had some of the most damage because there was no land  manager patrolling those areas, but even actively managed preserves were damaged because  land managers did not always have the resources to keep up with the increased use.    2.2 Notable New Species Observations    In 2020 there were two significant observations in Carlsbad, as described below.     Carlsbad HMP Annual Report, Reporting Year 16 16 March 2021  2.2.1 Native Grass Species Thought to be Extinct  Prairie false oat (Sphenopholis interrupta subsp. californica) was thought  to be extinct. Previously, it was only known from two locations in Baja  California, Mexico from the 1880s. In April, 2020, botanists Jessie Vinje  (Conservation Biology Institute) and Margie Mulligan (San Diego Natural  History Museum) discovered this species in Carlsbad while conducting  rare plant surveys. The species was found on clay soils while surveying  for another clay soil species (few species can tolerate soils with a high  clay content).  Not only did they rediscover a species that was thought to  be extinct for over 100 years, but this was the first known record from  the United States. The botanists plan to survey throughout Carlsbad and  other areas within the county in 2021 to see if they can find other locations.    2.2.2 Mountain Lion Observation  Although there have been a few  eye‐witness accounts of a possible  mountain lion (Puma concolor) in  Carlsbad, until recently, we have  not obtained clear evidence such  as a photo. On November 3, 2020,  a photograph of a mountain lion was first captured by a trail camera by CNLM just east of Carlsbad  on Rancho La Costa Preserve (photo on the left), which extends into Carlsbad near Avenida  Soledad. Shortly thereafter, a sighting in Carlsbad near Babilonia Street was reported on the local  news and corroborated with a video (still shot from video on the right). Extensive research being  conducted on radio collared mountain lions in the region show that the vast majority of mountain  lion territories and movement occur north of State Route 76 and east of Interstate 15 (Vickers et  al. 2017). This individual was likely a young male just passing through.    2.3 Invasive Species Early Detection and Rapid Response  Invasive non‐native plants and animals are some of the biggest threats to the HMP preserve  system and most costly to manage. In partnership with land managers, regional groups and  agencies, the HMP Division uses the early detection and rapid response (EDRR) strategy to catch  new infestations early when they are smaller and less costly to eradicate or control. This section  discusses some of the key invasive species currently under surveillance.    2.3.1 Ward’s Weed Eradication Program  Ward’s weed, a small annual in the mustard family, was first discovered in Carlsbad in 2007, which  was the only extant location in North America. Now it has spread to approximately 200 acres of  Carlsbad HMP Annual Report, Reporting Year 16 17 March 2021  habitat within the HMP preserves (see map below). Approximately 98% of the known locations in  the United States occur in Carlsbad. The remaining locations are small isolated populations in San  Diego County. This species is a prolific seed producer, may spread rapidly as a dense mat, and  creates flashy fuel after drying up in the summer, creating a wildfire risk.    On Oct. 8, 2019, Carlsbad City Council approved a program to eradicate Ward’s weed because of  the threat to native habitats, protected plant and animal species, and recreational and agricultural  areas in Carlsbad. Phase 1 of the program, consisting of intensive treatment using pre‐emergent  herbicide Gallery throughout the infested area, was initiated in November 2019 and completed  in February 2021. A single treatment has been shown to be effective at suppressing seed  germination for at least two years. Phase 2, which is expected to last at least three years, will  consist of surveillance and spot treatment as necessary.    For more information, visit the Ward’s weed information page at:  https://www.carlsbadca.gov/services/depts/pw/environment/habitat/wardsweed.asp.        2.3.2  Other High Priority Invasive Species Surveillance   Land managers continued ongoing surveillance and adaptive management for the invasive shot  hole borer (Euwallacia ssp.), gold‐spotted oak borer (Agrilus auroguttatus), and the Italian white  snail (Theba pisana), among others. The two borer species are relatively new invaders to Southern  California and are known to cause significant damage to native trees in a short period of time. The  invasive shot hole borer has been confirmed from at least four preserves in Carlsbad and there  are unconfirmed signs at several other locations. Although the gold‐spotted oak borer has not  been confirmed in Carlsbad, it has been confirmed in Oak Riparian Park in Oceanside, which is  Palomar Airport Rd HMP Preserve System Ward’s weed infestation I= Carlsbad HMP Annual Report, Reporting Year 16 18 March 2021  adjacent to Lake Calavera Preserve. Because knowledge of these species is evolving rapidly, the  city and land managers coordinate regularly with the Eskalen Lab at the University of California  Cooperative Extension to ensure that the adaptive management responses are based on the best  available science.    The Italian white snail has been in San Diego County for about 100 years. In the early 1900s, it  caused significant damage to agricultural plants in San Diego but was thought to be eliminated  after an intensive eradication program in the 1920s (Martin and Wilen 2018). The snails  reappeared in San Diego County a few times since then but didn’t show the explosive growth of  the early 1990s until recently. In recent years, several locations of explosive growth of the Italian  white snail have been identified in Carlsbad. In one location in the Bressi Ranch area, ornamental  tree trunks were 100% covered with the snails, which are known to climb up onto vegetation  during the hot summer months to avoid ground‐level heat. Although it is unknown if the snails  can significantly damage native plants, the snail is now considered to be a high alert species by  the University of California Department of Agriculture and Natural Resources because of its  explosive growth in San Diego County.  Currently, the city and land managers are not aware of  effective management for this species. After scraping and crushing the snails from the trees in  Bressi Ranch, the snails reappeared the following year in the same density. It is notable that the  Italian white snail in Carlsbad is often observed in the same location as Ward’s weed, which also  originated in the Mediterranean region.       2.4 Long‐term Biological Monitoring  Long‐term biological monitoring is required by the HMP, and results are reported every three  years. Site‐specific monitoring is conducted by the preserve managers on actively managed  preserves, which accounts for approximately 70% of the HMP preserve system. Vegetation  monitoring is accomplished by mapping every five years to evaluate changes in the boundaries of  vegetation types over time. CNLM also conducts more detailed studies to evaluate the structure,  composition and species richness of coastal sage scrub habitat using permanent sampling plots  established evenly across the landscape in Carlsbad.     Focused species surveys are required for a subset of the sensitive species that occur in Carlsbad  (MHCP 2003, Vol. III). For discussion purposes, these species are organized into the following  functional groups (species that share similar life history characteristics):     Upland Plants: San Diego thornmint (Acanthomintha ilicifolia), Thread‐leaved brodiaea  (Brodiaea filifolia), Del Mar Mesa sand aster (Corethrogyne filaginifolia var. linifolia), Del  Mar manzanita (Arctostaphylos glandulosa ssp. crassifolia), Encinitas baccharis (Baccharis  vanessae), and Orcutt’s hazardia (Hazardia orcuttii).   Carlsbad HMP Annual Report, Reporting Year 16 19 March 2021   Vernal Pool Species: California Orcutt grass (Orcuttia californica), little mousetail  (Myosurus minimus ssp. apus), San Diego button celery (Eryngium aristulatum var.  parishii), spreading navarretia (Navarretia fossalis), Riverside fairy shrimp  (Streptocephalus woottoni), and San Diego fairy shrimp (Branchinecta sandiegonensis).     Lagoon/Coastal Bird Species: Belding’s savannah sparrow (Passerculus sandwichensis  beldingi), California least tern (Sterna antillarum browni), Ridgeway Rail (Rallus  longirostris levipes), and western snowy plover (Charadrius alexandrinus nivosus).    Riparian Bird Species: least Bell’s vireo (Vireo bellii pusillus), and southwestern willow  flycatcher (Empidonax traillii extimus).   Upland Bird Species: coastal California gnatcatcher (Polioptila californica californica).    See the 2020 triennial monitoring report for the results and a discussion of current status, threats  and management (Appendix C).           Carlsbad HMP Annual Report, Reporting Year 16 20 March 2021                          This page intentionally left blank     Carlsbad HMP Annual Report, Reporting Year 16 21 March 2021  3.0 Financial Summary     3.1 City Funding in Support of HMP  The city uses funding to support implementation of the HMP in two ways: (1) permanent funding  allocated specifically for HMP coordination and management of city lands, and (2) existing  resources, including administrative staff and staff from the Environmental Management Division,  Planning Division, Parks and Recreation Department, and Police Department.    3.1.1 HMP Implementation  The majority of the city’s ongoing costs to support HMP implementation are activities required by  the HMP or the Implementing Agreement. Two of the city’s main responsibilities are: (1) oversight  of the HMP Preserve and (2) direct, active management of 618 acres of preserve land owned by  the city.     To fulfill the first responsibility, the city dedicates a senior‐level coordinator and provides other  staff support for HMP implementation. The city also contracted with a biological consulting firm  to serve as the city’s preserve steward, coordinating management throughout the HMP preserve  and evaluating management effectiveness. This reporting period, the city provided $95,000 in the  annual budget to fund the contract for preserve steward costs.     The second responsibility is being accomplished through the city’s contract with CNLM, a non‐ profit preserve management company for the management of city‐owned HMP preserves. CNLM  conducts regular biological monitoring and habitat management throughout the city’s preserves,  including maintenance fences and signage, closure of unauthorized trails, regular patrols, invasive  species removal, and public outreach.    In addition, although not funded through the HMP Program, the city has two permanent full time  rangers who patrol open space areas, including parks, trails, and habitat preserves. The ranger  program is administered by the Police Department, which allows the rangers to have citation  authority and close contact with the Homeless Outreach Team and police officers, which are often  needed to deal with issues such as encampments and other unauthorized access.    3.1.2 Habitat Mitigation Fees  As described in Section 1.3.5, habitat mitigation fees are collected from developers for project‐ related impacts to certain types of native habitat and deposited into the Habitat Mitigation Fee  Fund. Impacted habitats that require a fee include unoccupied coastal sage scrub, coastal  sage/chaparral mix, and chaparral (except southern maritime chaparral) (Group C); occupied  coastal sage scrub (Group D);  non‐native grassland (Group E); and disturbed lands, eucalyptus, or  agricultural lands (Group F). The purpose of the habitat mitigation fee program is to fund the city’s  obligation to acquire, protect, and manage lands in the Gnatcatcher Core Area.      Carlsbad HMP Annual Report, Reporting Year 16 22 March 2021    As shown in Table 4, mitigation fees totaling $29,998.15 were collected during the current  reporting period. On February 25, 2020, the City Council authorized payment of $1,104,114 to  purchase the remaining 12.93 acres of Core Area Credit. The current balance of the Habitat  Mitigation Fee Fund is ‐$169,600.19.  Since the adoption of the HMP, the city has taken advantage  of opportunities to purchase Core Area credits when they become available. On several occasions,  the cost of credits exceeded the available Habitat Mitigation Fee funds, requiring an advance from  the General Fund and resulting in a negative fund balance. In‐lieu fees will continue to be collected  for habitat impacts, as appropriate, and will be used to reimburse the General Fund.     Table 4. Habitat Mitigation Fee Fund Activity in RY 16 (2019‒2020)    Date Description Habitat Impacted Total1  11/01/19 Beginning Fund Total  $‐169,900.19 1  Fees Collected    11/12/19 Baum Residence 0.54 acre Type F (Ag, Dist, Eucalyptus) $1,759.86  12/23/19 Lin Residence 0.47 acre Type F (Ag, Dist, Eucalyptus) $1,574.50  03/03/20 Argonauta Residence 0.44 acre Type F (Ag, Dist, Eucalyptus) $10,309.50  03/03/20 Argonauta Residence 0.30 acre Type D (Coastal Sage Scrub) $1,474.00  06/18/20 Laguna Drive Subdivision 0.09 acre F (Ag, Dist, Eucalyptus) $309.33  07/30/20 Goertzen Residence 0.38 acre Type D (Coastal Sage Scrub) $13,058.70  07/30/20 Goertzen Residence 0.39 acre Type F (Ag, Dist, Eucalyptus) $1,340.43  07/30/20 Goertzen Residence 0.01 acre Type E (Non‐native Grassland $171.83  Total Fees Collected  $29,998.15  Funds Expended for Core Area Conservation   02/25/20 12.93 acres of credit associated with the Luchia Property ‐$1,104,113.60  Total Funds Expended  ‐$1,104,113.60  10/31/20 Account Balance  ‐$1,244,015.64    3.2 Status of Preserve Management Endowments  The endowment activity and status for preserves funded through endowments are given in  Table 5. During the reporting period, a total of $793,633 was spent by the land managers on  management and monitoring activities on 24 preserves and endowments for these properties  (not including most lands owned by the city) totaled $17,851,104. CDFW’s Carlsbad Highlands  Ecological Reserve and Agua Hedionda Lagoon Ecological Reserve are funded through State  Wildlife Grant funding. The Batiquitos Lagoon Ecological Reserve is funded through a mitigation  account established by the Port of Los Angeles and held by CDFW.    I I I I Carlsbad HMP Annual Report, Reporting Year 16 23 March 2021  Table 5. Endowment Status for HMP Preserves in RY 15 (2019‒2020)  Preserve Name Managing  Entity1  Inception  Date   Original  Endowment2   Inflation‐ Adjusted  Endowment3  RY 19‐20  Budget  RY 19‐20  Expend.  Total Funds  as of  9/30/20  Buena Vista Creek Ecol. Rsv.  CNLM3 April 2007 $776,644  $996,165  $43,923  $44,546  $1,351,700  Calavera Hills II/Rob. Ranch CNLM3 June 2006 $1,834,813  $2,389,454 $105,373  $104,734 $3,638,227  Carlsbad Oaks North CNLM3 March 2006 $1,020,311  $1,332,461 $58,750  $59,075  $1,888,534  Carlsbad Raceway SDHC5 April 2014 N/A2 N/A2 $25,813  $25,473  $2,438   Cassia Professional Offices CNLM3 Jan. 2007 $104,600  $159,681  $5,844  $5,806  $192,578   City‐owned Preserves City/CNLM3 2009 N/A2 N/A2 Not reported $200,000 N/A2  Emerald Pointe SDHC Aug. 2008 $194,948 $251,442  $12,688 $8,172  $254,639   Encinas Creek  CNLM3 May 2007 $427,004  $526,311  $23,205  $23,491  $815,290   Kelly Ranch CNLM3 March 2002 $296,125  $456,804  $17,903  $20,438  $669,350   La Costa Collection UC July 2005 $378,756  $437,022  $18,258  $18,258  $439,215   La Costa Glen CNLM3 Jan. 2013 $624,800  $733,348  $32,334  $31,312  $2,653,917  La Costa Villages CNLM3 Feb. 2002 $1,364,400  $2,089,767 $101,982  $104,240 $2,653,917  Laurel Tree Lane Preserve SDHC Dec. 2017 $365,092  $385,464  $23,861  $20,919  $406,239   Manzanita Partners  HRS Oct. 2012 $51,000  $56,739  $1,600  $1,600  $68,264   Muroya  SDHC Oct. 2015 $314,867  $347,674  $15,750 $13,512  $368,710   Nelson CNLM3 June 2001 $72,180  $104,102  $5,098  $4,720  $134,739   New Crest Preserve UC May 2015 $91,393  $100,072  $3,518  $3,518  $99,842   North Coast Calvary Chapel Helix Sept 2001 N/A2 N/A2 $7,833  $7,883  N/A2  Paseo Del Norte  UC Aug. 2016 $100,009  $108,123  $4,250  $4,250  $127,060   Poinsettia Place  UC July 2011 $167,935  $193,555  $6,991  $7,342  $189,486   Poinsettia Station Vernal Pools City 2019 $181,904  $188,174 $11,000  $10,914  $192,596   Quarry Creek  SDHC June 2015 $806,496  $813,715  $36,075  $37,300  $825,623   Sage Creek SDHC April 2016 $275,404  $297,992  12,032 $14,476  $343,055   Southern  UC Nov. 2013 $428,747  $469,018  $18,222  $21,654  $535,685   TOTAL 2018‐2019 $9,682,480 $12,437,083 $592,303 $793,633 $17,851,104  1 Total funds are reported as of 10/31/20 for HRS, Urban Corps, and Helix  2 Long‐term management is funded through an annual contract rather than an endowment  3 Original endowment amount adjusted for inflation to the current reporting year  Carlsbad HMP Annual Report, Reporting Year 16 24 March 2021  This page intentionally left blank  Carlsbad HMP Annual Report, Reporting Year 16 25 March 2021  4.0 References  City of Carlsbad. 2004. Habitat Management Plan for Natural Communities in the City of Carlsbad.   Martin, T. and C. Wilen. 2018. Italian white snail becoming and invasive pest (again). University of  California Cooperative Extension.  https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=27411.  Multiple Habitat Conservation Program (MHCP). 2003. Final MHCP Plan. Volumes I‒III. Prepared  for the Cities of Carlsbad, Encinitas, Escondido, Oceanside, San Marcos, Solana Beach, and  Vista, March 2003.  U.S. Department of Labor Consumer Price Index. 2020, December. CPI Inflation Calculator.  Retrieved from https://data.bls.gov/cgi‐bin/cpicalc.pl  Vickers, W., K. Zeller, H. Ernest, K. Gustafson, and W. Boyce. 2017. Mountain Lion (Puma concolor)  Connectivity in North San Diego County Multi‐Species Plan Area and Assessment of  Mountain Lion Habitat Use and Connectivity in Northern San Diego and Southern Riverside  and Orange Counties, with Special Focus on Prioritization of North San Diego County MSCP  Lands for Conservation, and Identification of Critical Highway Barriers and Solutions. A joint  report to the San Diego County Association of Governments and California Department of  Wildlife including appended peer‐reviewed publications resulting from this research  project.   Final TRIENNIAL BIOLOGICAL MONITORING REPORT ATTACHMENT B Carlsbad Habitat Management Plan (HMP) Through 2020 Prepared for City of Carlsbad March 2021 r-ESA ~ Final TRIENNIAL MONITORING SUMMARY REPORT Carlsbad Habitat Management Plan (HMP) Through 2020 Prepared for City of Carlsbad Prepared by Alanna Sullivan Environmental Science Associates 550 West C Street Suite 750 San Diego, CA 92101 619.719.4200 esassoc.com Bend Camarillo Delray Beach Destin Irvine Los Angeles Oakland Orlando Pasadena Petaluma Portland Sacramento San Diego San Francisco San Jose Santa Monica Sarasota Seattle Tampa March 2021 r ESA ~ | OUR COMMITMENT TO SUSTAINABILITY ESA helps a variety of public and private sector clients plan and prepare for climate change and emerging regulations that limit GHG emissions. ESA is a registered assessor with the California Climate Action Registry, a Climate Leader, and lounding reporter for the Climate Registry. ESA is also a corporate member of the U.S. Green Building Council and the Business Council on Climate Change (BC3). Internally, ESA has adopted a Sustainability Vision and Policy Statement and a plan to reduce waste and energy within our operations. This document was produced using recycled paper. Triennial Monitoring Summary Report 2018–2020 i ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 TABLE OF CONTENTS HMP Triennial Report through 2020 Page 1. Introduction..................................................................................................................... 1 2. Vegetation Communities ............................................................................................... 4 2.1 Influence of Weather on the Preserve System ....................................................... 4 2.2 Vegetation Mapping ................................................................................................ 4 2.3 Long-Term Coastal Sage Scrub Monitoring ........................................................... 6 2.3.1 Results of Coastal Sage Scrub Monitoring .................................................. 6 2.4 Post-Fire Recovery Monitoring ............................................................................... 8 2.4.1 Results of Post-Fire Recovery Monitoring ................................................. 10 3. Species .......................................................................................................................... 10 3.1 Upland Plants ........................................................................................................ 19 3.1.1 San Diego Thornmint ................................................................................. 19 3.1.2 Thread-Leaved Brodiaea ........................................................................... 21 3.1.4 Del Mar Mesa Sand Aster .......................................................................... 25 3.1.3 Del Mar Manzanita ..................................................................................... 26 3.1.5 Encinitas Baccharis .................................................................................... 29 3.1.6 Orcutt’s Hazardia ....................................................................................... 29 3.2 Vernal Pool Species .............................................................................................. 33 3.3 Lagoon/Coastal Bird Species ............................................................................... 34 3.3.1 Belding’s Savannah Sparrow ..................................................................... 34 3.3.2 California Least Tern .................................................................................. 36 3.3.3 Light-Footed Ridgway’s Rail ...................................................................... 39 3.3.4 Western Snowy Plover ............................................................................... 41 3.4 Riparian Bird Species ........................................................................................... 43 3.4.1 Least Bell’s Vireo ....................................................................................... 43 3.4.2 Southwestern Willow Flycatcher ................................................................ 45 3.5 Upland Bird Species ............................................................................................. 45 3.5.1 Coastal California Gnatcatcher .................................................................. 45 4. References .................................................................................................................... 47 Table of Contents Page Triennial Monitoring Summary Report 2018–2020 ii ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 List of Figures 1 HMP Preserve Categories ................................................................................................ 2 2 Preserve Ownership/Management ................................................................................... 3 3 Poinsettia Fire Perimeter .................................................................................................. 9 4 Upland Herbs .................................................................................................................. 13 5 Upland Shrubs ................................................................................................................ 14 6 Vernal Pool Species ....................................................................................................... 15 7 Lagoon Species .............................................................................................................. 16 8 Riparian Birds ................................................................................................................. 17 9 Coastal California Gnatcatcher ...................................................................................... 18 List of Tables 1 Precipitation in Carlsbad .................................................................................................. 5 2 Priority Species Surveys Conducted on Actively Managed Preserves ......................... 11 3 Population of San Diego Thornmint on Carlsbad Preserves ......................................... 20 4 Sample Population of Thread-Leaved Brodiaea by Vegetative Count on Carlsbad Preserves ........................................................................................................ 23 5 Sample Population of Thread-Leaved Brodiaea by Flowering Count on Carlsbad Preserves ........................................................................................................ 23 6 Pollinator Diversity and Abundance on Carlsbad Preserves ......................................... 24 7 Thread-Leaved Brodiaea Flower Visitation Rates on Carlsbad Preserves* .................. 24 8 Seed Production of Pin-Flagged Thread-Leaved on Carlsbad Preserves .................... 25 9 Del Mar Manzanita at Carlsbad Preserves .................................................................... 28 10 Counts of Orcutt's Hazardia Transplanted to Kelly Ranch Preserve ............................. 31 11 Counts of Orcutt's Hazardia Transplanted to Rancho La Costa Preserve .................... 31 12 Number of Occupied Belding’s Savannah Sparrow Territories by Year ........................ 35 13 Number of California Least Tern Nests, Pairs, and Fledglings by Year ........................ 38 14 Number of Pairs or Unpaired Individuals of Ridgway’s Rails by Year ........................... 40 15 Western Snowy Plover Monitoring Results for Batiquitos Lagoon ................................ 42 16 Estimated Number of Least Bell’s Vireo Pairs ............................................................... 44 Triennial Monitoring Summary Report 2018–2020 1 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 TRIENNIAL MONITORING SUMMARY REPORT Carlsbad Habitat Management Plan (HMP) 1. Introduction This report summarizes the results of biological monitoring conducted within the Carlsbad Habitat Management Plan (HMP) preserve system since adoption of the HMP in November of 2004. This monitoring summary is provided every three years, pursuant to the HMP and Open Space Management Plan (TAIC 2004). Monitoring is conducted by the on-site preserve manager of each preserve. The monitoring results are submitted through site-specific annual reports and geographic information system (GIS) data to the HMP Preserve Steward. The HMP Preserve Steward summarizes the data every three years into a triennial monitoring summary report for the City of Carlsbad (city). The preserve system is made up of several categories of HMP preserves (Figure 1): 1. Established private and city-owned preserves – established after approval of the HMP. These preserves are funded through endowments or other permanent funding sources for active management. 2. California Department of Fish and Wildlife (CDFW) ecological reserves – owned and managed by CDFW. 3. Pre-existing preserves – established prior to HMP approval. These preserves are generally owned by private homeowner associations (HOAs). Management on these lands is minimal, consisting mostly of access control and trash collection. 4. Future preserves. Future preserves include Standards Areas and Proposed Hardline Areas, which are undeveloped areas within the HMP boundary. When these areas are developed, HMP standards must be followed, including the permanent conservation of a portion of the property and funding for long-term management. For the most part, monitoring data is collected on established private and city-owned preserves and CDFW ecological reserves. Figure 2 shows the land owner and preserve manager for individual preserves. Results of monitoring for vegetation communities and species are summarized in Sections 2 and 3. 78 5 BUENAVISTALAGOON AGUAHEDIONDALAGOON BATIQUITOS LAGOON PACIFIC OCEAN BUENA VISTA CREEK AGUA HE DI O N D A C R E E K SAN MARCOS CREE K OCEANSIDE VISTA ENCINITAS 0 6,400 FeetI City of CarlsbadCategories of HMP Preserves Legend Established Private and City-owned Preserve California Department of Fish and Wildlife Ecological Reserve Pre-existing Natural Open Space Preserve Future Preserve Proposed Hardline Future Preserve Standards Area Figure 1 Date: 1/12/2021Document Path: \\shares\GIS_App\RequestsMarch2015\PublicWorks\PEM\MuniProp\RITM0020672_20\Working Map\Working.aprx 1111 1111 1111 1111 ~ C cityof Carlsbad Carlsbad ,-' ,....__,,,, ff ,,-___ /,,.,._..,,... __ ,r,_,,-L-..... __.._,,v \ ,, ... ,/ ·|}þ78 §¨¦5 Buena VistaLagoon ER Buena VistaCreek ER Calavera Hills/Robertson Ranch LakeCalavera CarlsbadHighland ER Agua Hedionda-Cabrillo Power AguaHedionda ER MunicipalGolf Course(The Crossings) BrodiaeaPreserve Dawson-LosMonos CanyonReserve CarlsbadOaks North CarlsbadRaceway BressiRanch RanchoLa Costa RanchoLa CostaBatiquitos Lagoon ER La CostaGlenPACIFICOCEAN BUENA VISTA C R E E K AGUA HEDIO N D A C R E E K SAN MARCOS CREEK OCEANSIDE VISTA ENCINITAS P A L OMARAIRPORTRD LACOSTAAV P O IN S E T T IA L NCA R L S B A D B L ELCAMINOREALCARLSBADVILLAGEDR RANCHOSANTAFERDTAMARACKAVA VI A RAPYMELRO SE D R OLIVENHAIN RD ALGA RD C OLLEGEBLCANNONRD 0 1MilesI City of CarlsbadCurrent Preserve Ownership/Management City of CarlsbadCity Preserves*- Aura Circle- Aviara Park- Batiquitos Drive- Carlsbad Village Dr- Carrillo Ranch- Crossings Golf Course- Faraday- La Costa Canyon Park- La Costa/Romeria- Lagoon Lane- Lake Calavera- Los Monos- Macario Canyon- Poinsettia Park- Veteran's Park Other Public/Semi-PublicOther Public/Semi-Public- Cabrillo Power- Dawson-Los Monos Canyon Reserve- North County Transit District- Other Public Agencies- San Diego Gas & Electric- San Dieguito Union School District- State of California Wildlife AgenciesCalifornia Department of Fish and Wildlife- Agua Hedionda ER- Batiquitos Lagoon ER- Brodiaea Preserve- Buena Vista Creek ER- Buena Vista Lagoon ER- Carlsbad Highlands ER Conservation Management EntityCenter for Natural Lands Management- Calavera Hills II/Robertson Ranch- Carlsbad Oaks North- Encinas Creek- Kelly Ranch- La Costa Glen- Rancho La CostaOther Management Entity- Habitat Restoration Sciences (HRS)- Helix Environmental- San Diego Habitat Conservancy- San Diego Urban Corps Habitat Services PrivateHOAs- Aviara HOAs- Calavera Hills HOAs- La Costa HOAs- Other HOAs and Private Open Space- Rancho Carrillo Master HOA Future PreservesFuture Preserves- Other Future Preserve- Pending Management- Undeveloped Standards Area Figure 2 Date: 1/20/2021 * Managed by Center for Natural Lands Management (CNLM) Document Path: \\shares\GIS_App\RequestsMarch2015\PublicWorks\PEM\MuniProp\RITM0020672_20\Figure_2_CurrentPreserveManagement11x17.mxd D - - ... r-e. '--City of arlsbad - - (/ --~ _,-----/~-.,~-l-, ; ____ / ___ .,__.,_,- ,, ,.,,                 This page intentionally left blank  Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 4 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 2. Vegetation Communities 2.1 Influence of Weather on the Preserve System In the past decade, drought and wildfire had a significant impact on the condition of the preserve system. Severe drought conditions were especially prominent during the 2012/2013 and 2013/2014 rainy season (generally November through April), which brought 5.2 and 4.0 inches of rain, respectively (NOAA 2020) (Table 1). Average annual precipitation in Carlsbad based on historical weather data from Palomar Airport is approximately 10 inches. Total precipitation in Carlsbad was below average from the 2011/2012 rainy season to the 2015/2016 rainy season; however, the 2016/2017, 2018/2019, and 2019/2020 rainy seasons were above average, with 15.4 inches, 13.39 inches, and 20.07 inches, respectively (NOAA 2020). The 2019/2020 rainy season had the highest precipitation documented across the period, with nearly 200 percent of the historic precipitation average (NOAA 2020). The drought conditions starting from the 2011/2012 rainy season helped pave the way for the Poinsettia Fire, which burned over 300 acres in Carlsbad in May of 2014, most of which was on HMP preserve lands. On the day the fire broke out, the area was experiencing extreme Santa Ana conditions, which is a fairly rare occurrence at that time of year, bringing the humidity levels down and bringing temperatures up to 100 degrees Fahrenheit. Burned habitats are recovering, but not without added threats, such as the presence of invasive plant species. This is true particularly in the coastal sage scrub habitat, which has historically not recovered from fire as well as chaparral habitats and some of the oak woodland. Projections of climate change in the region include warming by approximately 4 to 9° Fahrenheit, an approximately 20 percent decrease in precipitation, longer periods of drought, and rare but extreme flooding occurrences (Climate Science Alliance 2021). These extreme weather conditions, along with increased human presence, are expected to continue to put added stress onto our already vulnerable natural lands. 2.2 Vegetation Mapping Long-term vegetation monitoring within the preserve system is accomplished through periodic mapping (required by the HMP) and focused studies. Mapping is conducted within preserves by the preserve managers every five years to document changes in vegetation community boundaries over time. Vegetation communities were originally mapped using Oberbauer-modified Holland classification system (Holland 1986, Oberbauer 2008), which is the classification system upon which the HMP habitat targets are based. However, the preserve managers now use Vegetation Classification Manual for Western San Diego County (SANDAG 2011), the current standard classification system for this area. This system is based on alliances and associations, which are defined by the presence and abundance of diagnostic species. This classification is much more fine-scaled, and provides more information about variation within the habitat. Site-specific vegetation mapping submitted by preserve managers is incorporated into a single citywide geospatial vegetation layer. Because the HMP requirements are tracked in the older classification system, the city’s vegetation layer uses a crosswalk to the Oberbauer system for tracking purposes. Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 5 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 TABLE 1 PRECIPITATION IN CARLSBAD Year 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Recent Average Precipitation Total (in)* 5.77 4.69 11.32 10.0 11.7 14.1 9.25 5.22 4.04 7.07 6.6 15.4 6.03 13.39 20.07 9.6 * Measurements from Palomar-McClellan Airport in Carlsbad, CA (NOAA 2020). Data taken from Nov-April. The year presented coincides with the end of the rainy season (April). Total Annual Precipitation from 2006–2020 * Measurements from Palomar-McClellan Airport in Carlsbad, CA (NOAA 2020). Data taken from Nov-April. The year presented coincides with the end of the rainy season (April). 25 20 ~ 15 .r. u .5 10 5 o / V V V V I I I -- - 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 YEAR I Rainfall Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 6 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 2.3 Long-Term Coastal Sage Scrub Monitoring The Center for Natural Lands Management (CNLM) began a long-term monitoring program in coastal sage scrub habitat during the spring of 2009 by setting up modified Whittaker plots (see CNLM 2010 for methods and rationale). Fifty-nine plots distributed evenly across the landscape in Carlsbad have been visited every year from 2009 to 2019 on a three-year return interval. The plots are located on CNLM-managed preserves, CDFW Ecological Reserves, and the Aviara Master Association Preserve. One-third of the plots are monitored each year, and thus, each plot is visited every three years (termed rotating panel). The advantages of using a rotating panel design rather than visiting the same plots every year are that (1) it allows for sampling within a broader area, and (2) it reduces potential impacts from trampling from monitoring activities. The purpose of the study is to track and evaluate changes in the structure, composition and species richness of coastal sage scrub over time. Species richness was collected for 9 years (3 rotating panels), through 2017; it was stopped at this time as there were no meaningful trends expressed (such as loss of species). Coastal sage scrub monitoring did not occur in 2020 due to the COVID- 19 stay-at-home order, but is anticipated to resume in 2021. 2.3.1 Results of Coastal Sage Scrub Monitoring From 2009 to 2016, average percent cover of all shrubs showed a generally even trend, while 2017 showed an increase in percent cover. Shrub cover in 2019 increased from its slight dip in 2018 and was the second highest cover recorded in the 10-year trend. Average percent cover of native forbs and native grasses increased dramatically from previous drought years, potentially due to higher seed load produced in the heavy rains of 2017 and 2019. Average percent cover of both native forbs and native grass in 2019 were the highest on record for the 10-year trend. Average percent cover of non-native forbs increased slightly, while non-native grasses decreased slightly in 2019. See graphs below. Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 7 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 Coastal Sage Scrub Monitoring: Percent Cover of Native Shrubs. Precipitation in inches on left axis and percent cover on right axis (+/- 1 standard error). Coastal Sage Scrub Monitoring- Percent Cover of Native Forbs and Grasses. Note that data was collected incorrectly in 2016 and 2017; therefore, those years are not included. Precipitation in inches on left axis and percent cover on right axis (+/- 1 standard error). 18.00 16.00 -14.00 "' GI ..r: .E 12.00 '.e 10.00 ·= "' a:: vi' 8.00 6.00 4.00 2.00 0.00 16.00 14.00 12.00 ~ 10.00 u ~ 8.00 "' --~ 6.00 a:: 4.00 2.00 0.00 November to April Rainfall vs Native Sh rub 80 -Nov-April Rain Total 70 67.5 Native Shrub .1 60 ... C: 46. 49.4 GI 50 ~ GI c.. 40 Gi 44 .5 > 0 u 30 ~ -..r: <II 20 10 0 ~(o r'9 ~ ,t5 ~Oo r'9 ,s, ,t5 ~ ~ ~ '\,<::> ,y' ~ .;, ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Year November-April Rainfall vs Native Forb and Grass Cover -Nov-April Rain Total Native Farb Native Grass Year 45 ... C: 40 lij u 35 i 3 .5 '::" 30 ~ 0 25 ':;: :a 20 l5 "C 15 ~ .Q () ... GI 5 ~ "' 0 z Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 8 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 Coastal Sage Scrub Monitoring - Percent Cover of Exotic (Non-Native) Forbs and Grasses. Note that data was collected incorrectly in 2016 and 2017; therefore, those years are not included. Precipitation in inches on left axis and percent cover on right axis (+/- 1 standard error). 2.4 Post-Fire Recovery Monitoring In May of 2014, approximately 317 acres of natural land burned in the Poinsettia Fire; of this, approximately 295 acres of habitat was within the HMP hardline. The majority of this habitat was unmanaged preserves (private HOA lands), actively managed preserves (established private and city-owned), and future preserves (Standard Areas) (Figure 3). The city, in coordination with the Preserve Steward and CNLM, developed and implemented the Carlsbad HMP Post-Fire Monitoring Protocol (Protocol, City of Carlsbad 2014). This protocol consisted of quantitative and qualitative assessments in 26 locations throughout the burn area, stratified by habitat type (southern maritime chaparral [SMC], chamise chaparral [CC], coastal sage scrub [CSS], oak woodland, and vernal pools). The monitoring was conducted annually for five years, starting in the spring of 2015 and completed in spring 2019, to evaluate the trajectory of recovery of each vegetation community, and compare it to known post-fire response expectations. In 2019, three unburned SMC reference plots were added at La Costa Greens and City Ventures, and one unburned CSS reference plot was added at Emerald Point to provide data comparison to unburned areas. Data from the city-wide CSS monitoring program is also used in this report to provide comparison to unburned CSS in the city. Reference plots were chosen based on close proximity to the burned areas, but were just outside of the burn limits. 16.00 14.00 12.00 ~ 10.00 .c; u ~ ii -c; 8.00 -~ 6.00 a: 4.00 2.00 0.00 November-April Rainfall vs Exotic Fo rb and Grass Cover -ov-April Rain Total Exotic Forb ~ ~ ~ ~ ~ ◊ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Year 30 ... c; GI 25 ~ C. -GI 20 ~ u ::! <II 15 l5 "C i::; <II ~ -5-i.o o 0 ... u ~ >( uJ Figure 3Poinsettia Fire Perimeter Date: 3/3/2021Document Path: J:\GIS\HMPdata\RH Working\HMP_PoinsettiaFirePerimeter.mxd Post-Fire Habitat Recovery Monitoring Aviara ParkwayEl Camino RealPalomar Airport Rd Poinsettia Lane Legend 2014 Poinsettia Fire Perimeter HMP Preserve (Conserved Land) Future Preserves Post-fire Transects $1 Chaparral !.Coastal Sage Scrub #0 Oak Woodland "/S. Maritime ChaparralO01,500Feet ('city of Carlsbad . iii ... .. .... ,.,~ "• .. , .; 5 .r . & i: .. " ... .,., ,,, " ~ .. .. 0 .... Pkw, t,oUO wo&f Ay ~p i::1 ... .,_ P1ritt:Ay <)\ l u LI an r• c1 at . ,.i'-" 3 tl~\\Cj. a :i' ~ -- Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 10 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 2.4.1 Results of Post-Fire Recovery Monitoring The CC, SMC, and CSS vegetation communities are mostly recovering as expected after the Poinsettia Fire and are headed towards the desired self-sustaining trajectory. Higher than average precipitation in 2017 and 2019 was very beneficial, with most native shrub species showing good vigor, and the cover of native herbaceous species increasing and showing the expected post-fire type of species diversity. Although non-native species were observed, the cover and density is also in-line with what is expected and tolerated, and is mostly not considered a threat that would alter the recovery and long-term species composition within each community. The relatively low cover of non-native species observed should allow for healthy vegetation communities to return overtime, given another fire is not experienced in upcoming decades. It will take many more years for the SMC and CC communities to attain the over 90 percent cover of native shrubs that typifies these communities (including the SMC reference sites). Native shrub cover in the CSS community will likely take fewer years to recover than the chaparral communities. Native herbaceous cover in the CSS community is already robust, and will likely decrease as native shrub species become more dominant. Non-native herbaceous and grass species may be an issue in CSS, and have higher percent cover than the reference transects; however, these functional groups are expected to decrease as native shrub cover increases and out-competes these species. Generally, the oak woodlands are on the trajectory towards recovery, with many native plant species repopulating the area. Mortality of oak trees was low on the Rancho La Costa Preserve, but much higher (35 percent) on the Manzanita Partners Preserve. The remaining oaks on the two preserves are slowly recovering. Invasive non-native species such as pampas grass (Cortaderia selloana) and black mustard (Brassica nigra) are abundant in this habitat, which may affect natural recruitment of oaks. The presence of vernal pool indicator species on the Manzanita Preserve vernal pool site, including endangered San Diego button celery (Eryngium aristulatum var. parishii) and federally endangered San Diego fairy shrimp (Branchinecta sandiegonensis), indicates the habitat is on a positive trajectory toward recovery. Non-native species are abundant on site, but no more so than the pre-fire conditions. For more details, see the final report Poinsettia Fire Post-Fire Monitoring Results 2015–2019, included as Appendix E in the Year 15 HMP Annual Report (CNLM and ESA 2020). 3. Species This section summarizes the monitoring results for species with site-specific permit conditions (i.e., those that require individual populations to be tracked) (MHCP 2003, Vol. III). The species are grouped by general type, including upland plants, vernal pool plants and animals, lagoon/coastal birds, riparian birds, upland birds, and wildlife movement. Long-term focused species monitoring is conducted to document species persistence in the preserve system, and to inform site-specific management actions. The information summarized in this report comes from site-specific annual reports, regional species monitoring reports, and GIS data. Table 2 below summarizes the years during which focused species surveys were conducted on each preserve. Figures 4–9 show the known locations of these species based on data from preserve managers, California Natural Diversity Database (CNDDB), and the U.S. Fish and Wildlife Service (USFWS). Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 11 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 TABLE 2 PRIORITY SPECIES SURVEYS CONDUCTED ON ACTIVELY MANAGED PRESERVES Land manager Species Upland Plant Species San Diego thornmint Thread-leaved brodiaea Del Mar manzanita Del Mar mesa sand aster Encinitas baccharis Orcutt's hazardia Vemal Pool Species California Orcutt grass Little mousetail San Diego button-celery Spreading navarretia Riverside fairy shrimp San Diego fairy shrimp Lagoon/Coastal Species Belding's sava nnah sparrow California least tern Western snowy plover Light-Ridgway's rail Riparian Bird Species Least Beffs vireo SW willow flycatcher Upland Bird Species California gnatcatcher NP = Not present NSI -No survey information 1 Every 5 years t. Annually 3 Transplanted population CDFW Agua Hedionda Lagoon ER NP NP NP NP NP NP 1973-20151' 6 not surveyed 2001-2017' 2000-20202 2008 NSI 2008, 2010, 2013 CDFW Batiquitos Lagoon ER NP NP NP NP NP NP 1973-20151' 6 2001-20162 2001-20172 2000-20202 NSI NSI 2008, 2010, 2013 4 Vernal pools burned in 2014 fire 5 Year missed due to staff attrition 6 2020 missed due to Covid 7 Every 10 years CDFW 1-Ac Brodiaea Preserve NP 2015-2020 NP NP NP NP NP NP NP CN LM BV Creek ER NP 2011-20192 NP NP NP NP 2008, 2009, 2010, 2014, 2016, 2018, 2020 2008, 2009, 2010, 2014 2008, 2010, 2013 CDFW BV Lagoon ER NP NP NP NP NP NP CN LM Calavera/Rob Ranch 2008-2012' 2006-20192 NP NP NP NP Vernal pools do not occur on these preserves 1973-20151' 6 not surveyed 2001-2017' 2000-20202 2008, 2009, 2013, NSI 2014, 2017, 2018, 2019, 20206 2008, 2009, 2013, NSI 2014 NSI 2007, 2010, 2013, 2015, 2016 Table 2. Priority Species Surveys Conducted on Actively Managed Preserves CDFW CNLM Carlsbad Highlands ER Carlsbad Oaks N NP 2007-20202 2008, 2015, 2016 2007-20192 NP NP NP NP NP NP NP NP NSI NP NSI NP 2008, 2010, 2007, 2010, 2013, 2018, 2019 2013 SDHC Carlsbad Raceway 2017-20202 NP NP NP NP NP NP NP NP NP NP NP CNLM UC SDHC CNLM City Preserves City Ventures Emerald Pointe Encinas Ck NP NP 2010, 2014-2020 NP 2010-20192 NP NP NP NP NP NP NP NP 2014-2020 NP NP NP NP NP NP NP NP NP NP Vernal pools do not occur on these preserves Lagoon species do not occur on these preserves 2009, 2010, NP 2011, 2014, NP NP 2008-20202 2016, 2019 2009, 2010, NP 2011, 2014, NP NP 2008-20112 2016 2019 2014 2011, 2013, 2018 2013, 2017, 2020 2009, 2012 2008-2020 CNLM Kelly Ranch NP NP 2009, 2014, 2017, 2018, 2019 NP NP 2004-2014, 2016, 2017-20202' ,, 5 NP NP 2003-2007, 2010, 2013 CNLM La Costa Glen NP NP 2013, 2014, 2015, 2017 2007, 2014- 2017 2013, 2014, 2015 NP NP NP 2013, 2017, 20206 Dudek Manzanita Partners4 NP NP 2005, 2013 7 1998, 20137 NP NP NP NP 2016-2020 NP NP 2016-2017, 2019- 2020 NP NP 2016 HOA UC Morning Ridge Poinsettia Place NP NP NP NP 2008 2004, 2014, 2017, 2020 NP NP NP NP NP NP Vernal pools do not occur on these preserves NP NP NP NP 2005, 2013, 2013, 2017, 2018 2020 Dudek Poinsettia Station NP NP NP NP NP NP 2019, 2020 NP 2019, 2020 2019, 2020 2019, 2020 2020 NP NP NP SDHC Quarry Creek NP NP NP NP NP NP CNLM Rancho La Costa 2005-20202 2005-20192 2005, 2008, 2014-2017 NP NP 2004-2017- 20202'3 Vernal pools do not occur on these preserves 2016, 2019 2014, 2019, 2020 NP NP 2005, 2007, 2016 2010, 2013, 2018 Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 12 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 This page intentionally left blank ")") #* ") ") ") ") ") ") ") ") ") ") ") #* ") ") ") ") ") ") ") ") #* ") ") ") #* ")") ") #* ") ") ") ") #* ") ") ")") ") ") ") ") #* ") ") ") ") ") #* ") ") ") ") ") ") ") #* ") ")") ")") ") #* ") ") ") ") ") ") ") ")") ") ") #* ") ") ") #* ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ") ") #* ") ") ") ") ")") ") ") ") ") #* #* ") ") ") #* ") ") ") ") #* #* #* ")#* ") ") ") ") #* ")#* #* ") ") ") #* #* ") ") #* ")") ") #* #* ") ") #* ") ") ") #* ") ") #* #* ") ") #* ") #* ") ") #* ") ")") #* GFGF GF GF GF GF GFGFGF GF GF !( GF GF GF!( !( ·|}þ78 §¨¦5 BUENAVISTALAGOON AGUAHEDIONDALAGOON BATIQUITOSLAGOON PACIFICOCEAN BUENA VISTA C R E E K AGUA HEDIO N D A C R E E K SAN MARCOS CREEK OCEANSIDE VISTA ENCINITAS PALOMAR AIRPORTR D LA COST A AV P O IN S E T T IA L N C A R L S B AD BL E L C A MIN O RE A LCARLSBADVILLAGEDR RANCH O S ANTAFERDTA MARACKAVAVIARAPY M E L R OSE DROLIVENHAIN R DALGA RD C O LLEGEBLCANNONRD0 6,400FeetI City of CarlsbadCurrent Status of Upland Herbs USFWS Occurrence: !(San Diego Thornmint GF Thread-leaved BrodiaeaHMP Database: #*San Diego Thornmint ")Thread-leaved Brodiaea HMP Database: Del Mar Mesa Sand AsterUSFWS Critical Habitat: San Diego Thornmint Thread-leaved Brodiaea Existing and Proposed Hardline PreserveCNDDB Occurence: Del Mar Mesa Sand Aster San Diego Thornmint Thread-leaved Brodiaea Figure 4 Date: 3/8/2021Document Path: \\shares\GIS_App\RequestsMarch2015\PublicWorks\PEM\MuniProp\RITM0020672_20\Figure_3_UplandHerbs.mxd CC Cityof arlsbad 1111 CJ CJ ~ 1111 1111 (j r-✓..!'--,_ ... _____ .. -----.., __ A_,, I ,./ ,--' ,-......,,, ( _,-----------... '\ .i ,.___, !(!(!(!(!(!(!(!(!(!(!(!(!(!(!( !( !( !(!(!(!( !( !(!(!(!(!(!(!( !(!(!(!( !(!(!(!( !( !(!( !(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!( !(!(!(!(!(!( !(!( !(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!(!( !( !(!(!(!(!(!(!(!( !( !( !( !(!(!(!(!(!(!( ·|}þ78 §¨¦5 BUENAVISTALAGOON AGUAHEDIONDALAGOON BATIQUITOSLAGOON PACIFICOCEAN BUENA VISTA C R E E K AGUA HEDIO N D A C R E E K SAN MARCOS CREEK OCEANSIDE VISTA ENCINITAS PALOMAR AIRPORTR D LA COST A AV P O IN S E T T IA L N C A R L S B AD BL E L C A MINO RE A LCARLSBADVILLAGEDR RANCH O S ANTAFERDT A MARACKAVAVIARAPY M E L R OSEDROLIVENHAIN R DALGA RD C O LLEGEBLCANNONRD0 6,400FeetI City of CarlsbadCurrent Status of Upland Shrubs HMP Database: !(Del Mar Manzanita HMP Database: Del Mar ManzanitaCNDDB Database: Del Mar Manzanita Existing and Proposed Hardline Preserve Figure 5 Date: 3/1/2021Document Path: \\shares\GIS_App\RequestsMarch2015\PublicWorks\PEM\MuniProp\RITM0020672_20\Figure_4_UplandShrubs.mxd {"city of Carlsbad 1111 1111 ... _.....__, ___ .,,..,,..,,.-"" ,.,1 i"--..._,~..,f--... .. __ "'" ..... .,,. ,,---__ .,_,, ... ------- ( ___ / / --~ ,-.,,. .. __,, ,-) /'''-, _/ ' .... ....r ; _ .. ---------, I , ... _, II ,.,,.,,.,- } _,/-' !! ! ! !! ! ! !!!! !!! (( ( ( (( ( ( (((( ((( ") #*#*#* #* ·|}þ78 §¨¦5 BUENAVISTALAGOON AGUAHEDIONDALAGOON BATIQUITOSLAGOON PACIFICOCEAN BUENA VISTA C R E E K AGUA HEDIO N D A C R E E K SAN MARCOS CREEK OCEANSIDE VISTA ENCINITAS PALOMARAIRPORTRD LA COST A AV P O IN S ETTI A L N C A R L S B AD BL EL C A MINOREALCARLSB ADVILLAG EDR RANCH O S ANTAFERDTAM ARAC KAV MELROSE D R OLIVENHAIN R DC A N N O N RD 0 6,400FeetI City of CarlsbadCurrent Status of Vernal Pool Species HMP Database: #*Orcutt's BrodiaeaUSFWS Occurrence: ")Riverside Fairy Shrimp !(San Diego Fairy Shrimp HMP Database: California Orcutt's Grass San Diego Button-Celery Spreading Navarretia CNDDB Occurrence: Riverside Fairy Shrimp San Diego Fairy ShrimpUSFWS Critical Habitat: San Diego Fairy Shrimp Spreading Navarretia Existing and Proposed Hardline Preserve Figure 6 Date: 3/1/2021Document Path: \\shares\GIS_App\RequestsMarch2015\PublicWorks\PEM\MuniProp\RITM0020672_20\Figure_5_VernalPoolSpecies.mxd ! ! ! ! ( ( ( ( ") {"city of Carlsbad D D D - (------,,~,,-! ,---, ; ' ' ..___, ,,,,.,.,-, : ) ,,/'_, #* #*#* #*#* #* #*#* ·|}þ78 §¨¦5 BUENAVISTALAGOON AGUAHEDIONDALAGOON BATIQUITOSLAGOON PACIFICOCEAN BUENA VISTA C R E E K AGUA HEDIO N D A C R E E K SAN MARCOS CREEK OCEANSIDE VISTA ENCINITAS PALOMAR AIRPORTR D LA COST A AV P O IN S E T T IA L N C A R L S B AD BL E L C A MINO RE A LCARLSBADVILLAGEDR RANCH O S ANTAFERDT A MARACKAVAVIARAPY M E L R OSEDROLIVENHAIN R DALGA RD C O LLEGEBLCANNONRD0 6,400FeetI City of CarlsbadCurrent Status of Lagoon Species - Birds HMP Database: Least TernUSFWS Occurrence: Least Tern #*Western Snowy Plover CNDDB Occurrence: Western Snowy Plover Belding's Savannah Sparrow Least Tern Existing and Proposed Hardline Preserve Figure 7 Date: 3/1/2021Document Path: \\shares\GIS_App\RequestsMarch2015\PublicWorks\PEM\MuniProp\RITM0020672_20\Figure_6_LagoonBirdSpecies.mxd 0 • {"city of Carlsbad (j _.,,.----f-,_,rJ_, __ A-'- /'_ ... __ _,,,, ,./ ,--' -... 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Regional monitoring and associated research being coordinated by the San Diego Management and Monitoring Program (SDMMP) provides information about species population trends, genetic exchange, and best management practices for individual species. The SDMMP prepared a science-based regional Management and Monitoring Strategic Plan for Conserved Lands in Western San Diego County: A Strategic Habitat Conservation Roadmap (MSP Roadmap) (2017), which provides regional and local (population-specific) goals and objectives. This document is an adaptive management and monitoring implementation plan for priority species and habitats within Western San Diego County and is coordinated across multiple jurisdictions and key organizations and individuals in an effort to obtain a cohesive management and monitoring strategy for these species, including databases and mapping tools, species-specific monitoring protocols, and management techniques specific to local threats. As part of the MSP Roadmap, a rare plant monitoring protocol was developed by SDMMP to identify and prioritize management objectives regarding status, threats, and management needs for 30 rare plant species (six of which occur in Carlsbad) on conserved lands in Western San Diego County. The city encourages preserve managers to participate in the regional Inspect and Manage (IMG) program for Nuttall’s acmispon (Acmispon prostratus), Orcutt’s brodiaea (Brodiaea orcuttii), Orcutt’s hazardia (Hazardia orcuttii), San Diego goldenstar (Bloomeria clevelandii), San Diego thornmint (Acanthomintha ilicifolia), and thread-leaved brodiaea (Brodiaea filifolia). The MSP Roadmap also includes strategic plans for wildlife movement (SDMMP 2011) and invasive plants (CBI et al. 2012). The city will continue to coordinate with these regional management and monitoring efforts as feasible. 3.1 Upland Plants 3.1.1 San Diego Thornmint Acanthomintha ilicifolia Status: federally threatened, state endangered MHCP Critical Locations and Major Populations The MHCP identified critical locations and major populations in scattered locations throughout Carlsbad, mostly in private HOA preserve lands. Other populations of San Diego thornmint are located within the Carlsbad Oaks North and Rancho La Costa Preserve. Long-Term Monitoring Within Carlsbad, long-term monitoring for selected populations has been ongoing since 2008. Populations of San Diego thornmint at Carlsbad Oaks North, Emerald Pointe, and Rancho La Costa Preserves are regularly monitored by Preserve Managers (Figure 4). Populations monitored as part of the SDMMP rare plant monitoring program include Carlsbad Raceway, Emerald Pointe, Palomar Airport (County-owned preserve), and Rancho Carrillo (HOA-owned and managed preserve). Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 20 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 Status As is typical for many annual species, San Diego thornmint counts varied tremendously at each location between 2008 and 2020 (Table 3). Due to the high annual variability of the populations, it is difficult to determine the overall trend of a specific population or the species as a whole. To better understand what drives dynamics of the species populations in Carlsbad, CNLM is conducting studies to evaluate the status of the plants in relation to weather, cover of native and non-native forbs and grasses, and invasive species removal. CNLM is also conducting genetic studies to understand the genetic diversity and structure of the species. Overall, this species appears to be thriving and is well-protected on Carlsbad Oaks North, Palomar Airport (outside the HMP), and Rancho La Costa Preserves; however, populations on Carlsbad Raceway, Emerald Pointe, and Rancho Carrillo Preserves are very small and vulnerable to extirpation, which appears to have happened on the Calavera Hills/Robertson Ranch site. TABLE 3 POPULATION OF SAN DIEGO THORNMINT ON CARLSBAD PRESERVES Number of Individuals Preserve 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Calavera Hills/Robertson Ranch 2 4 2 0 0 NS NS NS NS NS NS NS NS Carlsbad Oaks North 505 556 648 342 464 151 327 420 276 474 123 207 2,593 Carlsbad Raceway NS NS 26 NS NS NS NS NS NS 3 9 5 15 Emerald Pointe NS 110 93 NS NS NS 6 14 39 17 22 40 0 Palomar Airport (outside HMP) NS NS UR NS NS NS NS NS 15,000 35,107 1,708 6,380 1,475 Rancho Carrillo NS NS NS NS NS NS NS NS NS 23 3 5 11 Rancho La Costa (the Greens) 194 251 380 936 965 79 652 378 237 996 278 1,396 2,580 NS = not surveyed UR = surveyed but unreported * Measurements from Palomar-McClellan Airport in Carlsbad, CA (NOAA 2020). Data taken from Nov-April. The year presented coincides with the end of the rainy season San Diego Thornmint Population on Carlsbad Preserves *Calavera Hills/RR East = Calavera Hills/Robertson Ranch **Outliers Carlsbad Raceway, Emerald Pointe, and Palomar Airport not included. Refer to Table 3. 3000 2500 ., (0 ::, .,, 2000 ·;; '5 = 1500 c .E C: 1000 0 .s:;; I- 500 0 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 YEAR ■ Calavera Hills/RR East ■ Carlsbad Oaks North ■ Emerald Pointe ■ Rancho La Costa Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 21 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 Major Threats The major threats to San Diego thornmint are invasive plant species, such as tocalote (Centaurea melitensis) and purple false brome (Brachypodium distachyon); human use and trampling; habitat fragmentation with loss of pollinators; climate change and prolonged drought; and small populations that are more vulnerable to environmental conditions (SDMMP 2017a). Where small numbers of the species are found, such as Carlsbad Raceway, Emerald Pointe, and Rancho Carrillo, hand watering, seed bulking and population augmentation could help ensure that the population does not become extirpated. It is critical to continue intensive invasive plant species removal efforts, as this currently appears to be the largest threat to the species’ decline. Management Actions Conducted to Protect the Species Management and monitoring strategies for San Diego thornmint have been developed by SDMMP and CNLM based on the best available science and local knowledge of land managers. The strategies include implementing a seed banking and bulking plan, inspecting conserved occurrences on an annual basis, developing habitat suitability and climate change modeling, and additional refinement of BMPs. Management generally focuses on intensive invasive species removal around San Diego thornmint populations (including hand weeding around plants), thatch removal, and access control. The Rancho Carrillo population remains unmanaged. In addition to general management, CNLM has commenced a San Diego thornmint out-seeding program in 2017 to enhance and buffer their existing occurrences (CNLM 2018a). CNLM attained both federal and state permits for these activities. Seed was collected from 2017 to 2020 from within Carlsbad, and was distributed to unoccupied habitat in 2019, 2020, and 2021, occurring once per out-seeding location. Results have been mixed; San Diego thornmint have flowered in several locations and increased in numbers each year, but at other locations, only a few have flowered. San Diego Habitat Conservancy has initiated seed collection for future seed bulking and expansion of the small populations on Carlsbad Raceway and Emerald Pointe and will continue weeding and hand watering as necessary to prevent extirpation. 3.1.2 Thread-Leaved Brodiaea Brodiaea filifolia Status: federally threatened, state endangered MHCP Critical Locations and Major Populations The MHCP identified critical locations/major populations in the following preserves: Calavera Hills Phase II, Carlsbad Highlands Ecological Reserve, Rancho Carrillo, Fox-Miller, Brodiaea Preserve, and Rancho La Costa. This is an endemic species to San Diego County and known from 20 occurrences on Conserved Lands (SDMMP 2017a). Long-Term Monitoring Index Plot Monitoring Long-term monitoring of thread-leaved brodiaea consists of monitoring index plots at preserves managed by CNLM and CDFW. Index plots are used to sample a subset of the entire populations Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 22 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 to evaluate trends in vegetative individuals and flowering rates. Some occurrences have thousands of individuals, which is too difficult and exhaustive to monitor. This is a preferred method to counting just flowers, as vegetative growth occurs annually, and flowering rates vary in relation to total precipitation. Index plots were monitored annually between 2012 and 2017, then every other year thereafter when numbers indicated the population was stable enough to reduce frequency (CNLM 2019a). Life-History Study CNLM initiated a 5-year life-history study in the winter of 2013–2014 that was completed in 2018 on its preserves. Life-history plots tracked individual plants throughout the vegetation and flowering phases of thread-leaved brodiaea each season from year to year, with the purpose of providing information about the degree of flowering, variance of dormancy, and how these factors relate to flowering. This information was used to determine the best method for estimating counts (e.g., whether flowering counts are a suitable replacement for vegetative counts). Pollinator Study CNLM and other entities have observed a lack of seed pod and seed production on flowering thread-leaved brodiaea individuals. This lack of seed production may be attributed to a reported self-incompatibility issue (Niehaus 1971), but could also be due to a lack of pollinators or effective pollination services. To investigate the lack of seed pod and seed production in thread- leaved brodiaea, CNLM developed a pollinator study to assess pollinator diversity and abundance, flower visitation rates, and seed pod and seed production. The study began in 2019 within known areas of thread-leaved brodiaea occurrences on CNLM Preserves (Rancho La Costa, Buena Vista Creek, and Calavera Hills). Status Overall, this species is considered to be doing relatively well within Carlsbad. Vegetative counts of this species appear to be relatively stable but flowering counts vary tremendously year to year depending on timing and amount of precipitation, the season during which the surveys were conducted, and other factors that are undetermined. CNLM has determined that the plant count during the flowering season may represent 0 to 35 percent of the actual population size, since only a fraction of a population flowers at a given time. Figure 4 shows known locations of thread- leaved brodiaea in Carlsbad and USFWS critical habitat for this species. Tables 4 and 5 show the vegetative and flowering counts. The results of the life history study concluded that vegetative production is relatively consistent across years despite differences in annual precipitation, and dormancy associated with little precipitation was not observed; individuals with four leaves tend to flower more than individuals with fewer than four; and flowering percentage seems to be correlated with total precipitation (CNLM 2020a). Pollinator diversity and abundance results from pan traps are included in Table 6, and pollinator visitation rates are included in Table 7. Seed production results are included in Table 8. Based on 2020 pollination study results, specifically the level of seed pod development and seed production, CNLM concluded that pollinators can effectively pollinate thread-leaved brodiaea Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 23 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 and produce seed under the right conditions; however, total seed production is low compared to other native plants within the same habitat (CNLM 2020b). TABLE 4 SAMPLE POPULATION OF THREAD-LEAVED BRODIAEA BY VEGETATIVE COUNT ON CARLSBAD PRESERVES Preserve 2012 2013 2014 2015 2016 2017 2018 2019 2020 Buena Vista Creek 647 817 753 979 1,047 1,338 NS 1,684 NS Calavera/Robertson Ranch 226 628 481 505 784 773 NS 1,211 NS Carlsbad Oaks North 102 224 189 145 217 325 NS 492 NS Rancho La Costa NS 3,457 2,421 4,833 2,946 3,293 NS 2,662 NS NS = not surveyed * Measurements from Palomar-McClellan Airport in Carlsbad, CA (NOAA 2020). Data taken from Nov-April. The year presented coincides with the April date Sample Population of Thread-Leaved Brodiaea on Carlsbad Preserves (by Vegetative Count) TABLE 5 SAMPLE POPULATION OF THREAD-LEAVED BRODIAEA BY FLOWERING COUNT ON CARLSBAD PRESERVES Preserve 2012 2013 2014 2015 2016 2017 2018 2019 2020 Buena Vista Creek 0 13 2 6 25 48 NS 139 NS Calavera/Robertson Ranch 1 3 0 22 3 26 NS 20 NS Carlsbad Oaks North 14 1 4 30 15 67 NS 103 NS Rancho La Costa NS 0 0 29 90 835 NS 323 NS NS = not surveyed * Measurements from Palomar-McClellan Airport in Carlsbad, CA (NOAA 2020). Data taken from Nov-April. The year presented coincides with the April date 0 1000 2000 3000 4000 5000 2012 2013 2014 2015 2016 2017 2018 2019 2020No. IndividualsYEAR Buena Vista Creek Calavera/Robertson Ranch Carlsbad Oaks North Rancho La Costa ■ ■ ■ ■ Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 24 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 Sample Population of Thread-Leaved Brodiaea on Carlsbad Preserves (by Flowering Count) TABLE 6 POLLINATOR DIVERSITY AND ABUNDANCE ON CARLSBAD PRESERVES Preserve Pan Trap Diversity1 Pan Trap Abundance2 Net Capture Diversity1 Net Capture Abundance2 2019 2020 2019 2020 2019 2020 2019 2020 Buena Vista Creek 6 4 43 36 5 3 11 27 Calavera Hills 8 5 80 24 4 3 24 31 Rancho La Costa 5 3 44 13 4 3 12 14 NOTES: * Diversity and abundance is based on pan trap data only 1 Diversity = number of potential pollinator species detected. 2 Abundance = number of distinct potential pollinator individuals detected. TABLE 7 THREAD-LEAVED BRODIAEA FLOWER VISITATION RATES ON CARLSBAD PRESERVES* Preserve 2019 2020 Buena Vista Creek 100.0 33.3 Calavera Hills 34.1 29.0 Rancho La Costa 75.0 64.3 Average 61.4 37.5 * Visitation rate: average number of minutes between pollinator visits per thread-leaved brodiaea flower. 0 200 400 600 800 1000 2012 2013 2014 2015 2016 2017 2018 2019 2020No. IndividualsYEAR Buena Vista Creek Calavera/Robertson Ranch Carlsbad Oaks North Rancho La Costa~ f l r1 ■ ■ ■ ■ Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 25 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 TABLE 8 SEED PRODUCTION OF PIN-FLAGGED THREAD-LEAVED ON CARLSBAD PRESERVES Preserve Total Seeds Individual Thread-Leaved Brodiaea With Seeds # Flowers With Seeds 20191 20202 20191 20202 20191 20202 Buena Vista Creek 0 10 0 3 0 3 Calavera Hills 0 0 0 0 0 0 Rancho La Costa 6 62 2 13 2 24 NOTES: 1 In 2019, 25 thread-leaved brodiaea individuals were pin-flagged at each Preserve. 2 In 2020, 30 thread-leaved brodiaea individuals were pin-flagged at each Preserve. Major Threats The main threats to this species within Carlsbad are invasive non-native grass species (e.g., slender wild oat [Avena barbata] and purple false brome) and non-native forbs (e.g., black mustard and bristly ox-tongue [Helminthotheca echioides]), thatch build-up, and self- incompatibility limiting seed production (CNLM 2020a). Although it is difficult to determine the population trajectory of Carlsbad occurrences (increasing, decreasing, or stable), the populations managed by CNLM and CDFW appear to be well protected due to intensive, localized management efforts that are regularly conducted. Populations managed by other entities should, at minimum, be inspected to confirm presence and population-specific threats should be identified and addressed. Management Actions Conducted to Protect the Species A management and monitoring approach developed by SDMMP and CNLM includes inspecting conserved occurrences every two years beginning in 2017, implementing routine management as determined when monitoring, developing habitat suitability and climate change modeling, surveying historical occurrences to determine status, and initiating seed collection and banking. Invasive non-native species management is the primary management for this species. 3.1.4 Del Mar Mesa Sand Aster Corethrogyne filaginifolia var. linifolia Status: California Rare Plant Rank (CRPR) 1B.1 MHCP Critical Locations and Major Populations There are no MHCP critical locations in Carlsbad. The closest MHCP major population is at the southern boundary of Carlsbad. The majority of the population within the MHCP Subregion is in the City of Encinitas but may extend into Carlsbad on private HOA lands. However, this species does occur within three Carlsbad preserves. Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 26 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 Long-Term Monitoring Long-term monitoring was initiated in 2014 for the La Costa Collections population of Del Mar Mesa sand aster. The surveys consist of delineating the boundaries of sand aster patches and estimating the density of the patches using 20 stratified, random 0.25 square meter plots (J. Whalen Assoc. 2014). In 2014, the density was 0.85 per 0.25 square meter. The densities in 2015, 2016, and 2017 were 0.65, 0.8, and 0.95, respectively. A complete count from 2005 recorded 1,540 total individuals at La Costa Collections Preserve. The preserve manager estimates that numbers have increased from this count, but recent counts have not continued. Long-term monitoring for the Manzanita Partners Preserve population was initiated in 2013. Monitoring on this preserve consists of general rare plant surveys every 10 years to confirm presence. This population was burned in the Poinsettia Fire and has not been observed within Manzanita Partners Preserve since the fire. A survey for this species will be performed in 2023 within the Manzanita Partners Preserve. Within City Ventures Preserve, a Del Mar Mesa sand aster survey was conducted in 2018 to map the current population boundaries. The 2018 survey effort included flagging the limits of the population and initiated an annual census count, which resulted in 672 individuals. In 2019 and 2020, 662 and 828 individuals were counted within the mapped population area, respectively. Figure 4 shows the locations of Del Mar Mesa sand aster on actively managed preserves. Status Del Mar sand aster seems to be stable. Major Threats The greatest threats are unauthorized access including trails, trampling, and other edge effects, such as trash and invasive plant species. Management Actions Conducted to Protect the Species Populations are being managed through general habitat management (e.g., invasive plant species removal, trash removal, access control [HRS 2014; G. Cummings, personal communication, 2018]). Potentially suitable habitat for this species within the HMP preserve system, which consists of coastal bluff scrub and openings within coastal sage scrub and chaparral, is also being managed through general habitat stewardship. Del Mar Mesa sand aster was not identified by the SDMMP as a high priority for regional management and monitoring; therefore, BMPs have not been developed for this species. 3.1.3 Del Mar Manzanita Arctostaphylos glandulosa ssp. crassifolia Status: federally endangered Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 27 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 MHCP Critical Locations and Major Populations The MHCP identified critical locations/major populations on preserve lands owned by the city, the County, private HOAs, and La Costa Villages. Long-Term Monitoring Surveys for Del Mar manzanita are conducted periodically on the following preserves: La Costa Glen, Kelly Ranch, Manzanita Partners, Morning Ridge, Poinsettia Place, and Rancho La Costa (see table below for dates) (Figure 5). Because the non-sensitive Eastwood manzanita (Arctostaphylos glandulosa ssp. glandulosa) also occurs on Rancho La Costa Preserve and Kelly Ranch Preserve, Del Mar manzanita has been re-mapped individuals to the subspecies level by taxonomic experts (Spiegelberg and Vinje 2008, CNLM 2018b). Status The number of individuals reported on other actively managed preserves ranges from 2 clumps (number of individuals unknown) to 313 individuals (Table 9). Three preserves burned during the Poinsettia Fire in May 2014, and post-fire surveys have not included Del Mar manzanita census counts to determine how many of the burned individuals survived. However, based on transect studies conducted to determine cover of native and non-native species, most Del Mar manzanita shrubs have resprouted at the stump, which is to be expected, as this species is highly adapted to fire. The species is likely to persist in the Carlsbad with appropriate management of the vegetation community, rather than species-specific management. By protecting and managing the vegetation community as a whole, this species is expected to remain in stable condition. Major Threats Primary threats at this preserve are anthropogenic, such as frequent fire, trespass, and vandalism, as well as the introduction of invasive non-native plant species (CNLM 2019b). Several shrubs on the unmanaged Santa Fe Trails Preserve population have been removed to create bike jumps and trails. Prior to the fire, threats to the actively managed Carlsbad populations were considered minimal due to the robustness of woody shrubs (i.e., they are not as vulnerable to drought, invasive plant species encroachment, or edge effects as small annuals) and the inaccessibility of most of the known locations. In burned areas, the major threat to recovery is erosion—many of the plants occur on very steep slopes that now have little to no vegetation holding the soil in place. Generally, wildfire is not considered a major threat to Del Mar manzanita as this species evolved with fire. It typically re- sprouts from a basal burl after it has been burned and the seeds are dependent on fire to germinate (USFWS 2010). However, even with fire-adapted species, if the natural fire regime is altered (e.g., if fires become too frequent or burn too hot), the long-term effect on the species could be detrimental. Management Actions Conducted to Protect the Species Management actions include invasive plant species removal, access control, and public outreach. Special attention has been given to the burn areas in Rancho La Costa, Poinsettia Place, and Morning Ridge Preserves to encourage recovery of these populations. Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 28 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 TABLE 9 DEL MAR MANZANITA AT CARLSBAD PRESERVES Number of Del Mar Manzanita Individuals Preserve 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 La Costa Glen NS NS NS 2001 NS NS NS NS NS 313 Unk2 Unk2 NS Unk2 NS NS NS Kelly Ranch NS NS NS NS NS 23 NS NS NS NS 2 NS NS 23 5 13 NS Manzanita Partners NS 117 NS NS NS NS NS NS NS 117 NS NS NS NS NS NS NS Morning Ridge NS 8 NS NS 8 NS NS NS NS NS burned4 NS NS NS NS NS NS Poinsettia Place 53 NS NS NS NS NS NS NS NS NS burned4 NS NS NS NS NS 38 Rancho La Costa NS >5005 NS NS 9 NS NS NS NS NS burned4 19 19 19 NS NS NS NS = Not Surveyed 1 Conducted for the MHCP, prior to long-term management 2 Unknown number; survey conducted but exact number of individuals not reported 3 Number of clumps is reported; number of individuals is unknown 4 Pre-fire surveys were conducted on Poinsettia Place. Morning Ridge, and Rancho La Costa in 2014; post-fire counts are presumed to be zero since the entire preserve burned, including above-ground biomass. A post-fire inspection on Rancho La Costa reported seven resprouting shrubs, and one near, but undamaged by the bulldozed fire line. 5 Survey performed prior to long-term management; taxonomic confirmation of subspecies not yet conducted Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 29 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 3.1.5 Encinitas Baccharis Baccharis vanessae Status: federally threatened, state endangered MHCP Critical Locations and Major Populations The closest MHCP major population is at the southern boundary of Carlsbad. The majority of the population is within Encinitas but may extend into Carlsbad on La Costa Glen Preserve. Within this major population, there are critical locations identified that may occur within Carlsbad; however, presence or absence of these observations has not been confirmed in the field since surveys were conducted in the 1990s for the MHCP, except in the La Costa Glen Preserve, as described below. Long-Term Monitoring One Encinitas baccharis locality was reported on the La Costa Glen Preserve in the 1990s during surveys conducted for the MHCP. Long-term management for this preserve was established in January of 2013. Focused surveys were performed by CNLM: two in 2013, two in 2014, and one in 2015. Encinitas baccharis was not observed during these surveys. Status The status of populations within Carlsbad, if they exist, is currently unknown. Major Threats Major threats to this dioecious (having separate male and female individuals, both necessary for reproducation) species are altered fire regime, low seedling recruitment, low seed viability, reduced reproductive potential at older age classes, fuel modification, trampling, and invasive plant species. Small, isolated occurrences with little connectivity and dioecious life history make this species more vulnerable to changes in environmental conditions (SDMMP 2017a). Management Actions Conducted to Protect the Species A management and monitoring approach was developed by SDMMP (2017a) for this species and includes inspecting conserved occurrences every two years, implementing routine management informed by monitoring, surveying historical occurrences to determine status, initiating seed collection and banking, and additional refinement of BMPs. Potentially suitable habitat on actively-managed preserves in Carlsbad is being managed through general invasive plant species removal and access control. 3.1.6 Orcutt’s Hazardia Hazardia orcuttii Status: state threatened Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 30 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 MHCP Critical Locations and Major Populations There are no naturally occurring MHCP critical locations or major populations of Orcutt’s hazardia in Carlsbad. If the transplanted populations in Carlsbad prove to be self-sustaining, they would be considered critical populations. Long-Term Monitoring Orcutt’s hazardia was transplanted by CNLM to CNLM’s Kelly Ranch and Rancho La Costa Preserves in 2003. Since then, CNLM has been tracking these transplants and documenting flowering adults and recruitment of juveniles and seedlings annually. Status By 2004, a total of 146 Orcutt’s hazardia individuals were transplanted to Kelly Ranch Preserve and 200 individuals were transplanted to Rancho La Costa Preserve. As of 2020, a total of 137 individuals (85 adults, 50 juveniles, and 2 seedlings) were observed on Kelly Ranch Preserve, and 144 individuals (125 adults and 19 juveniles) were observed on Rancho La Costa Preserve (CNLM 2020d, CNLM 2020e [Tables 10 and 11]). Overall, the adult plants on both sites have fared well over time, becoming generally stable within a few years after the initial transplantation. The number of juvenile and seedlings at Kelly Ranch Preserve has dropped, for reasons unknown. Monitoring will continue in future years. Major Threats The biggest threat to this species is that it occurs in only a few locations (only one of which is a natural population, located in Encinitas; all others were transplanted), and populations are very small and isolated, making this species highly vulnerable to extirpation by a catastrophic event, such as fire or disease (SDMMP 2017a). Ongoing drought also appears to be a major threat to this species. Management Actions Conducted to Protect the Species All known populations, including the single naturally occurring population in Encinitas and transplanted populations in Carlsbad, are under active management by CNLM. Management activities consist of intensive invasive plant species removal, access control, and transplant studies, which have been approved by the wildlife agencies. By better understanding population dynamics, it is hoped that this program will reduce the possibility of local extinction (the species still occurs in northern Mexico) due to unforeseen events. Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 31 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 TABLE 10 COUNTS OF ORCUTT'S HAZARDIA TRANSPLANTED TO KELLY RANCH PRESERVE TABLE 11 COUNTS OF ORCUTT'S HAZARDIA TRANSPLANTED TO RANCHO LA COSTA PRESERVE Life Stage Number of Individuals Counted, by Year 2006 2007 2008 2009 2010 2011 2012 2013* 2014 2015 2016 2017 2018 2019 2020 Adults (flowering) 160 NS NS 156 156 156 156 NS 147 144 157 125 125 126 125 Juveniles NS NS NS NS 2 10 15 22 24 13 0 14 18 22 19 Seedlings NS NS NS NS 8 4 1 0 0 0 0 0 1 0 0 Total count 160 unknown unknown 156 166 170 172 unknown 171 157 157 139 144 148 144 NS = not surveyed; *= only seedling counts performed Life Stage Number of Individuals Counted, by Year 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Adults (flowering) 121 97 104 104 104 104 104 104 105 103 102 NS 105 105 102 98 85 Juveniles2 0 0 0 1 1 4 15 42 119 157 152 NS 141 97 89 91 50 Seedlings 0 0 0 4 17 14 68 77 55 0 0 NS 0 0 0 0 2 Total count 121 97 104 109 122 122 187 223 279 260 254 NS 246 202 191 189 137 NS = not surveyed; counting was planned in 2015, but could not be completed due to staff attrition Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 32 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 Counts of Adult, Juvenile, and Seedling Orcutt’s Hazardia 0 50 100 150 200 Number of AdultsYEAR Kelly Ranch Rancho La Costa 0 50 100 150 200 20072008200920102011201220132014201520162017201820192020Number of JuvenilesYEAR Kelly Ranch Rancho La Costa 0 20 40 60 80 20072008200920102011201220132014201520162017201820192020Number of SeedlingsYEAR Kelly Ranch Rancho La Costa I I I _n1 I I - I ■ ■ ■ ■ ■ ■ Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 33 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 3.2 Vernal Pool Species California Orcutt Grass Orcuttia californica Status: federally endangered, state endangered Spreading Navarretia Navarretia fossalis Status: federally threatened Little Mousetail Myosurus minimus ssp. Apus Status: CRPR 3.1 Riverside Fairy Shrimp Streptocephalus woottoni Status: federally endangered San Diego Button Celery Eryngium aristulatum var. parishii Status: federally endangered, state endangered San Diego Fairy Shrimp Branchinecta sandiegonensis Status: federally endangered MHCP Critical Locations and Major Populations There are three vernal pool complexes in the HMP preserve system: (1) Poinsettia Station, (2) Hieatt property, north of the airport, and (3) Manzanita Partners Preserve, east of El Camino Real and south of the airport (Figure 6). The Poinsettia Station vernal pool has been identified as a MHCP critical location and major population for all vernal pool species listed above. The city received HMP coverage for these species in 2019 as a result of taking over long-term management of the site. Neither Hieatt Property nor Manzanita Partners Preserve were identified by the MHCP as critical locations or major populations. Long-Term Monitoring Baseline rare plant surveys and hydrological monitoring was conducted by Dudek at the Poinsettia Station pools in 2019 and 2020 when long-term management by the city was initiated. Long-term monitoring at the Manzanita Partners Preserve consists of annual general condition assessments. Although the Hieatt Preserve pools are not under active management, a site visit to evaluate status and threats was conducted by the HMP Preserve Steward and the city in January 2018 following a minor rain. Status Poinsettia Station In 2019 and 2020, 16 vernal pool indicator plant species were observed on site during baseline vernal pool floral surveys. Of these 16 species, 4 are recognized as special-status species by USFWS, CDFW, and/or considered a Narrow Endemic under the MHCP: Orcutt’s brodiaea (Brodiaea orcuttii), San Diego button celery, spreading navarretia (Navarretia fossalis), and California Orcutt grass (Orcuttia californica). In addition, two federally endangered fairy shrimp species were detected, including San Diego fairy shrimp and Riverside fairy shrimp (Streptocephalus woottoni). In 2019, both pools were visited too late in the season to detect presence of San Diego fairy shrimp; however, San Diego fairy shrimp was detected in both pools in 2020. Riverside fairy shrimp was detected in the southernmost pool in the preserve in 2019 and 2020. Hieatt Properties When surveyed in 2006, the pools did not contain any sensitive species, but contained the following vernal pool indicator species: dwarf wooly-heads (Psilocarphus brevissimus var. brevissimus), water pygmyweed (Crassula aquatica), chaffweed (Centunculus minimus), and Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 34 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 grass poly (Lythrum hyssopifolia). During the January 2018 visit to the Hieatt Properties, there was no sign of ponding; however, there were clear signs of a vernal pool matrix throughout the property, as previously mapped. Manzanita Partners Federally endangered San Diego fairy shrimp was observed in four pools during 2019 and 2020 monitoring efforts with thousands to hundreds of thousands of fairy shrimp individuals detected. San Diego button celery (Eryngium aristulatum) was documented during 2018, 2019, and 2020 monitoring (HRS 2020). All but two of the vernal pools were full during rain events in the winter of 2019/2020. Site visits conducted in 2020 indicated that non-native grasses and forbs, such as longbeak stork’s bill (Erodium botrys), are no longer a major issue within the vernal pools due to weed control efforts and increased pooling from adequate precipitation. Other Locations Additional vernal pools have been identified to the north of the Poinsettia Lanes site along the same NCTD right-of-way (Rosie 2010), although these are outside of the HMP boundary. Several of these pools are reported to support San Diego fairy shrimp. These pools, which are generally in poor condition (few vernal pool species and dense cover of non-native grasses), are not currently protected by a conservation easement or other open space protection. Major Threats Non-native plants, as well as lack of precipitation, remain key threats to vernal pools. However, with adequate precipitation, non-native plants are drowned out and native species adapted for vernal pool conditions are able to dominate. Encroachment of upland shrubs and altered hydrology are the primary threats at the Poinsettia Station Preserve. Management Actions Conducted to Protect the Species Poinsettia Station The city has recently obtained legal control over the protection, management, and monitoring of the Poinsettia Station vernal pools. Intensive weed removal within the pool basins was performed in 2019 and 2020. Future management will focus on annual non-native plant control and control of native shrubs that are encroaching into the pools. Hieatt Property The Hieatt property vernal pools are not being actively managed. Manzanita Partners Long-term management focuses on invasive species control and access control. 3.3 Lagoon/Coastal Bird Species 3.3.1 Belding’s Savannah Sparrow Passerculus sandwichensis beldingi Status: state endangered Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 35 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 MHCP Critical Locations and Major Populations The MHCP critical locations and major populations for Belding’s savannah sparrow are located in Agua Hedionda Lagoon and Batiquitos Lagoon, which are managed by CDFW. Long-Term Monitoring Surveys are conducted approximately every five years as part of an ongoing statewide census effort. The most recent census information available is from 2015; 2020 surveys were postponed due to the COVID-19 stay-at-home order but are planned to occur in 2021 (R. Zembal, personal communication, 2020). In 2015, 27 coastal salt marshes in California were surveyed (Zembal et al. 2015). Status The number of territories rose at Batiquitos Lagoon since the 2010 surveys and remained largely the same for both Agua Hedionda and Buena Vista Lagoons (Table 12, Figure 7). At Agua Hedionda Lagoon, the 2015 surveys revealed one fewer territory than 2010 surveys—a 6 percent decline in territories from 2010. At Batiquitos Lagoon, the 2015 surveys showed a 32 percent increase in territories from 2010 surveys, which revealed there was a 19 percent increase from the 2006 surveys; this was after a 44 percent decrease from the 2001 numbers due to an inundation of brackish marsh habitat (Zembal et al. 2015). At Buena Vista Lagoon, the 2015 surveys revealed that the formerly occupied territories (2006 and prior) did not contain Belding’s savannah sparrow. TABLE 12 NUMBER OF OCCUPIED BELDING’S SAVANNAH SPARROW TERRITORIES BY YEAR 1973 1977 1986 1991 1996 2001 2006 2010 2015 Buena Vista Lagoon 0 5 1 0 0 6 5 0 0 Agua Hedionda Lagoon 37 16 45 13 29 22 24 18 17 Batiquitos Lagoon 0 20 47 50 36 66 37 44 58 0 10 20 30 40 50 60 70 1973 1977 1986 1991 1996 2001 2006 2010 2015No. of Occupied TerritoriesYEAR Buena Vista Lagoon Agua Hedionda Lagoon Batiquitos Lagoon ■ ■ ■ Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 36 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 Major Threats Encroachment of freshwater and the transition of saltwater marsh habitat to brackish marsh, as well as the corresponding rise of territorial song sparrows, proliferation of invasive species, and human disturbances continue to exert pressure upon Belding’s savannah sparrow and the habitat necessary to support the species (Zembal et al. 2015). Human trespass and off-leash dogs continue to be a problem, resulting in habitat that is too heavily trafficked to support this species in much of the lagoon. Although CDFW is actively working to control detrimental species, including invasive algae (Caulerpa taxifolia) and Algerian sea-lavender (Limonium ramosissimum), much of the previously existing Belding’s savannah sparrow habitat has been affected and no longer supports adequate nest cover (Zembal et al. 2015). Management Actions Conducted to Protect the Species Past restoration of Batiquitos Lagoon resulted in the expansion of pickleweed, which is a critical component of Belding’s savannah sparrow habitat, and likely led to the doubling of the population between the 1996 and 2001 surveys. At Agua Hedionda Lagoon, CalTrans has installed low fencing along the northern edge of the lagoon, which helped minimally to exclude potential trespassers. CDFW’s top management priorities are habitat enhancement, protection, and restoration to improve tidal flushing; sediment control; limiting human disturbances; and the continued funding of a statewide census. 3.3.2 California Least Tern Sterna antillarum browni Status: federally endangered, state endangered and fully protected MHCP Critical Locations and Major Populations MHCP critical locations have been identified in all three lagoons. The population at Batiquitos Lagoon is considered an MHCP major population. Long-Term Monitoring Least tern monitoring, funded by CDFW, has been conducted annually at Batiquitos Lagoon from 1973 to 2020 as part of a statewide census (Figure 7). Status Estimates of number of breeding pairs, nests, and fledglings are presented in Table 13. Data for 2020 surveys were collected but not available during the preparation of this report. Based on 2016 monitoring data, Batiquitos Lagoon was among six breeding sites within the state of California that had over 300 breeding pairs, which represented 72 percent of the state’s total (Frost 2017). Measures of productivity, including number of nests, breeding pairs, clutch size, and number of surviving fledglings have been variable over time, and it is difficult to evaluate the overall trends of this subpopulation. However, the precipitous drop in the number of surviving fledglings, which decreased by more than 80 percent between 2010 and 2011 was likely due to the lack of funding Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 37 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 for monitoring and predator control (Foster 2011, Sisson 2011). Another steep drop in number of fledglings occurred between 2017 and 2019, but the reasons are unknown (J. Boland, personal communication, 2021). Major Threats Monitoring reports for 2017–2020, which discuss potential threats to this species, were unavailable during the preparation of this report. As of 2016, the threat of predation from peregrine falcon (Falco peregrinus), common raven (Corvus corax), northern harrier (Circus cyaneus), rat species, and coyote (Canis latrans), was an ongoing concern for the species (Frost 2017). However, in 2016, mortality due to non-predation factors was significantly greater than mortality due to predation, with the largest factor being abandonment both prior to hatching and post-term (Frost 2017). A lack of sufficient foraging habitat was thought to be a major limiting factor in California least tern population growth and could be contributing to abandonment. Management Actions Conducted to Protect the Species A management and monitoring approach for this species was developed by SDMMP (SDMMP 2017a) and includes predator control at breeding colonies, annual monitoring per CDFW protocols, inspection of habitat and document management needs, and implementation of routine management as necessary. Annual management actions for this species include fencing, interpretative signage, nest marking, chick shelters, vegetation management, and predator management (Frost 2017). Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 38 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 TABLE 13 NUMBER OF CALIFORNIA LEAST TERN NESTS, PAIRS, AND FLEDGLINGS BY YEAR 2001 2002 2003 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 No. Nests 222 226 615 596 627 594 610 649 480 532 563 558 479 415 451 692 684 548 No. Pairs 192 203-205 574 571 601 575-578 596 576-620 457-480 457-519 550-562 433-559 478 296-413 445 658-671 667-684 481-548 Estimated No. of Fledglings 73-99 53-66 155-228 109-128 223-270 146-226 143-187 212-233 208-261 20-37 34-38 117-163 232-269 90-143 175-200 175-225 94-99 22-31 0 100 200 300 400 500 600 700 Number of Pairs or FledgelingsYEAR No. Pairs No. Fledglings ■ ■ Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 39 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 3.3.3 Light-Footed Ridgway’s Rail Rallus longirostris levipes (Rallus obsoletus levipes) Status: federally endangered, state endangered and fully protected MHCP Critical Locations and Major Populations MHCP critical locations and major populations have been identified at all three lagoons in Carlsbad. Long-Term Monitoring In 2020, the 41st consecutive annual census of Ridgway’s rails in California coastal wetlands was conducted in 25 locations by assessing call counts. This long-term annual monitoring program, which extends from Mugu Lagoon in Ventura County to Tijuana Marsh National Wildlife Refuge on the Mexican border, is funded by CDFW. Ridgway’s rails are typically monitored by spring call counts and winter high tide counts. Status Three subpopulations occur in Carlsbad in the Buena Vista, Agua Hedionda, and Batiquitos Lagoons, which account for approximately 10 percent of the total California population (Figure 7). Batiquitos Lagoon supports the fourth largest subpopulation in the state and the largest subpopulation in Carlsbad. This subpopulation has shown a steady increase since census monitoring began in 1980. The Agua Hedionda Lagoon and Buena Vista Lagoon populations have been variable over time. Results through the 2020 season are summarized below for areas within Carlsbad (Zembal et al. 2020) (Table 14). Implementation of the management actions described below appear to be successful in protecting and expanding this species within Carlsbad, although it is unclear if the Batiquitos Lagoon, Agua Hedionda Lagoon, and Buena Vista Lagoon subpopulations are stable and self-sustaining without the introduction of captive-bred individuals. Major Threats Significant habitat degradation due to increasing tides and ocean inlet closures (as well as invasion by non-native trees and shrubs), development, and predators continue to be the greatest threats to the light-footed Ridgway’s rail (Zembal et al. 2020). Management Actions Conducted to Protect the Species A management and monitoring approach for this species was developed by SDMMP (SDMMP 2017a). It includes monitoring occurrences annually through 2021 to record abundance, threats, and management needs and implementing routine management of habitat and vegetation per the needs of Ridgway’s rail. CDFW priorities for the species are continued habitat enhancement/restoration, and funding of the statewide census. Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 40 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 TABLE 14 NUMBER OF PAIRS OR UNPAIRED INDIVIDUALS OF RIDGWAY’S RAILS BY YEAR Lagoon 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Buena Vista 51 31 61 51 51 61 81 81 91 91 6 31 91 2 4 10 4 7 91 10 10 Agua Hedionda 2 2 1 4 5 41 71 4 7 6 21 7 9 8 71 8 4 9 4 7 5 Batiquitos 21 31 31 5 11 161 191 22 22 261 361 431 431 45 40 45 52 41 16 32 35 1 represents pairs only but singles were also observed UR=Currently, data is unreported 0 10 20 30 40 50 60 200020012002200320042005200620072008200920102011201220132014201520162017201820192020No. Individuals or PairsYEAR Buena Vista Lagoon Agua Hedionda Lagoon Batiquitos Lagoon ■ ■ ■ Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 41 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 Management actions at all three lagoons Buena Vista Lagoon, Agua Hedionda Lagoon, and Batiquitos Lagoon, include habitat restoration and tidal enhancement, predator study and control program, nesting site provision, adaptive management studies, captive breeding, genetic and demographic augmentation of smaller subpopulations, and continued long-term monitoring of population status and effects of management actions (Zembal et al. 2020). A total of 67 rails were released from captive-bred rails in Batiquitos Lagoon between 2004 and 2019; at Agua Hedionda Lagoon, 36 rails were released between 2004 and 2013; and at Buena Vista Lagoon, 20 rails were released between 2011 and 2016 (Zembal et al. 2020). 3.3.4 Western Snowy Plover Charadrius alexandrinus nivosus Status: federally threatened MHCP Critical Locations and Major Populations MHCP critical locations and major populations have been identified at all three lagoons. The western snowy plover does not nest at Agua Hedionda Lagoon or Buena Vista Lagoon and has not been observed at either location during winter surveys. It nests at Batiquitos Lagoon Ecological Reserve (C. Beck, personal communication, 2018). Long-Term Monitoring Western snowy plover monitoring has been conducted annually at Batiquitos Lagoon through 2017 as part of a statewide census (Figure 7). Status Monitoring results from 1997 to 2019 are summarized below (Table 15). Monitoring data were not obtained for 2018 and 2020. Numbers were obtained for 2019 (M. Burlaza, personal communication, 2021). The numbers of nests, breeding adults, and fledglings at Batiquitos Lagoon plummeted in 2006 and remained low thereafter, which is consistent throughout California (Squires and Wolf 2010). A further decline has occurred at Batiquitos since 2014, which is not consistent with the rest of the state (Feucht et al. 2017). None were observed in 2017. The reason for this is unclear. Major Threats Avian predators continue to be a major threat to the western snowy plover, as well as a decline in suitable foraging habitat as loss of salt pan and mud flat areas has reduced typical food sources for this species (C. Beck, personal communication, 2018). Management Actions Conducted to Protect the Species CDFW performs the following activities to encourage western snowy plover nesting: (1) habitat management - maintaining pathways linking the breeding habitat with the north mudflats; (2) predator control - placing wire cages over active nests to protect the eggs; and (3) vegetation management around nesting sites (Beck 2016). In addition, a management and monitoring approach for this species was developed by SDMMP (2017a), which includes monitoring occurrences through 2021 to document abundance, threats, and necessary management actions; refining BMPs based on results; implementing high priority management actions; and monitoring the success of such actions. Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 42 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 TABLE 15 WESTERN SNOWY PLOVER MONITORING RESULTS FOR BATIQUITOS LAGOON Year 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 Breeding Pairs 36 39 11 14 17 22 22 33 27 17 6 10 8 8 6 6 8 10 7 2 0 UR 1 Nests 38 26 7 9 19 25 29 28 25 16 5 6 5 3 5 3 6 10 4 1 0 UR 1 Fledglings 12 8 4 6 12 17 10 12 11 10 3 4 3 6 0 3 7 9 4 0 0 UR 1 NOTE: Averages are displayed for ranges given in original data set UR = surveyed but unreported 0 5 10 15 20 25 30 35 40 1997 1999 2001 2003 2005 2007 2009 2011 2013 2015 2017COUNT DATAYEAR Nests Breeding Pairs Fledglings ■ ■ ■ Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 43 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 3.4 Riparian Bird Species 3.4.1 Least Bell’s Vireo Vireo bellii pusillus Status: federally endangered, state endangered MHCP Critical Locations and Major Populations There are no MHCP critical locations or major populations of least Bell’s vireo in Carlsbad. Long-Term Monitoring Focused species surveys were conducted in suitable habitat on several preserves by CNLM between 2008 and 2020. Incidental observations made during other activities were also recorded. The purpose of the surveys is to periodically inspect suitable habitat, map occurrences, and identify threats to inform site-specific management. Figure 8 shows the locations of observations from focused surveys and incidental observations. Status Since surveys began in 2008, the number of least Bell’s vireo pairs and/or individual males on Buena Vista Creek Ecological Reserve, Calavera Hills/Robertson Ranch, Encinas Creek, and city-owned preserves is variable (Table 16). On Buena Vista Creek Ecological Reserve, which has the greatest number of territories as indicated by pairs or territorial males, numbers varied from 3 to 12 over 13 years. On actively managed preserves, least Bell’s vireo habitat is well- protected and appears to be in good condition. Major Threats Threats to this species include loss of overall riparian habitat, altered hydrological conditions, nest parasitism by the brown-headed cowbird, and habitat degradation through the introduction of tamarisk (Tamarix spp.), giant reed (Arundo donax), and other invasive species. The shot hole borer (Euwallacea spp.) and the associated fusarium dieback disease, which is known to harm, and often kill, many riparian tree species least Bell’s vireo depend on for habitat such as willows (Salix spp.), is a major threat to this species. Shot hole borer was identified at The Crossings Preserve in 2016. Management Actions Conducted to Protect the Species This species is managed through general habitat management (e.g., trash pick-up, access control, patrols, invasive species removal), as well as brown-headed cowbird trapping (CNLM 2020c). Restoration and habitat enhancement activities are performed annually and have occurred on over 5 and 55 acres, respectively (CNLM 2020e). Many of the riparian trees that were most impacted from shot hole borer at The Crossings Preserve were removed in September 2018. The removal area is monitored annually, with no increase in infected trees since; additionally, about 25% of the cut trees have since re-sprouted (CNLM 2020c). A direct correlation between negative impacts from shot hole borer and a decreased presence of least Bell’s vireo has not been observed within Carlsbad. Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 44 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 TABLE 16 ESTIMATED NUMBER OF LEAST BELL’S VIREO PAIRS Preserve 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Buena Vista Creek Ecological Reserve 3–4 pair 3 pair 7 pair 3 pair1 NS NS 10–12 males2 NS 2 pair NS 10–12 males2 NS Det.1 3 males 3 males 2 males1 7 males Calavera Hills/ Robertson Ranch 1 pair1 1 indv1 NS NS NS 3 males1 2 males1 NS NS 3 males 1 pair1 Det.1 Det.1 1 male1 3 male1 Encinas Creek 1 pair 1 pair 1 male 1 male 0 1 male 0 0 0 0 0 0 NS4 3 males Rancho La Costa Preserve NS NS NS 2 indv1 NS NS 03 NS NS NS NS 0 Det.1 Quarry Creek Preserve NA NA NA NA NA NA NA NA 1 pair1 NS NS 7 indv 2 indv1 1 male City Preserves The Crossings Golf Course NS 1 pair 1 pair 0 NS 1 male3 NS NS 0 NS NS 0 NS 3 males 3 males Lake Calavera NS 0 0 0 NS 0 1 male1 NS 0 NS NS 0 NS Poinsettia Park NS 0 0 0 NS 0 NS NS 0 NS NS 0 NS Lagoon Lane NS 0 0 0 NS NS NS NS NS NS NS NS NS NS = not surveyed NA = not applicable because preserve was not acquired yet. Det. = detected, but number of individuals not confirmed. 1 Incidental observation 2 Territorial 3 Migratory male 4 Survey cancelled/postponed due to COVID-19. Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 45 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 3.4.2 Southwestern Willow Flycatcher Empidonax traillii extimus Status: federally endangered, state endangered MHCP Critical Locations and Major Populations There are no MHCP critical locations or major populations in Carlsbad and it appears that there are only two nesting colonies within San Diego County—one along the Upper San Luis Rey River and one along the Santa Margarita River (SDMMP 2017a). USFWS proposed critical habitat is located along Agua Hedionda Creek, east of El Camino Real, and along the eastern portion of Agua Hedionda Lagoon, west of El Camino Real (Figure 8). Long-Term Monitoring Focused species surveys for the southwestern willow flycatcher are conducted concurrently with least Bell’s vireo surveys on CNLM-managed preserves, as these species have similar habitat requirements. Status This species does not appear to breed in Carlsbad, and suitable habitat is limited within the preserve system. A migratory southwest willow flycatcher was observed many years ago at The Crossings Preserve (Cotton/Beland/Associates, Inc. 2000), and suitable habitat exists from near Cannon Road up to the old quarry area along Macario Creek and at Lake Calavera (CNLM 2013). One willow flycatcher was also observed at Lake Calavera in 2016, presumed to be a migrant due to the time of year (M. Spiegelberg, personal communication, 2018). Major Threats Threats to this species in San Diego County include loss of and modification to natural habitat, predation by the brown-headed cowbird, altered hydrology within habitats, urbanization, agricultural practices, and heavy recreational use (SDMMP 2017a). Loss of habitat from shot- hole borer/Fusarium die back may also be a threat. SDMMP has stated that daily management activities alone will not ensure that this species is protected. Management Actions Conducted to Protect the Species Annual non-native species removal and shot hole borer surveillance continue annually to improve riparian habitat onsite (CNLM 2020e). 3.5 Upland Bird Species 3.5.1 Coastal California Gnatcatcher Polioptila californica californica Status: federally threatened Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 46 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 MHCP Critical Locations and Major Populations No MHCP major or critical populations occur in Carlsbad; however, the regional stepping-stone corridor that provides dispersal opportunities between south San Diego County and Camp Pendleton (and into Orange and Riverside Counties) runs through Carlsbad. In addition, several areas of USFWS Critical Habitat have been identified within the city (Figure 9). Long-Term Monitoring The city initiated a coordinated long-term monitoring survey effort across approximately 1,500 acres of coastal sage scrub in 2010 to assess the current condition (abundance, status: pair or single, and distribution) of gnatcatchers throughout the HMP preserve system (CNLM and ESA 2013). Follow up surveys were conducted in 2013. Surveys were also conducted on managed preserves and selected unmanaged preserves in the vicinity of the Aviara Master Association. In 2015, due to the stability of the local population (high occurrence, high density, and high habitat quality throughout the preserve system) and occupancy of even the smallest habitat fragments, it was decided to delay triennial monitoring and instead monitor the species at nine-year intervals. The next citywide survey is scheduled for 2022. Status A total of 85 pairs and 42 males (127 total territories) were observed in 2010, and 117 pairs and 33 single males (150 territories) were observed in 2013, showing an increase of 23 territories despite little change in survey acreage (CNLM and ESA 2013). Gnatcatchers were observed across the jurisdiction and in all habitat patch sizes. Gnatcatcher territories on both managed and unmanaged preserves that were surveyed in 2010 and 2013 are thriving and appear to be well- protected from unauthorized access and other edge effects. Additionally, long-term coastal sage scrub monitoring has shown the habitat to have adequate shrub cover and high native species diversity. Major Threats The largest threats to this species regionally are habitat degradation and loss of habitat due to wildfire (Kus et al. 2017). In May 2014, occupied habitat supporting three documented gnatcatcher locations burned in the Poinsettia Fire. Post-fire monitoring suggests that the habitat is recovering well, although it may take many more years for the coastal sage scrub communities to attain the composition and cover of native shrubs that can support nesting gnatcatchers. Management Actions Conducted to Protect the Species Most of the suitable habitat in the city is under active management, or protected by a conservation easement. This species is managed through general habitat stewardship, including invasive plant species removal, patrolling, fence and sign maintenance, erosion control, habitat evaluations, and monitoring, and targeted restoration. Regional goals for this species include maintaining, enhancing, and restoring coastal sage scrub habitat to be resilient to environmental change and catastrophic events (SDMMP 2017b). A regional management strategy, based on long-term monitoring being conducted throughout the species’ range, is under development (Kus et al. 2017). Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 47 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 4. References Beck, Christine. 2016. 2016 Annual Report for Western Snowy Plovers at Batiquitos Lagoon Ecological Reserve, Carlsbad. California Department of Fish and Wildlife. November, 2016. Beck, Christine. 2018. Preserve Area Manager, California Department of Fish and Wildlife. Personal communication. Boland, Julia. 2021. California Department of Fish and Wildlife. Personal communication. Burlaza, Melanie. 2021. California Department of Fish and Wildlife. Personal communication. California Natural Diversity Database (CNDDB). 2019. California Department of Fish and Wildlife. https://apps.wildlife.ca.gov/RareFind Climate Science Alliance. 2021. San Diego County Ecosystems Assessment. https://www.climatesciencealliance.org/sdc-ecosystems-assessment Accessed February 25, 2021. CBI, DENDRA, Inc., and Cal-IPC. 2012. Management Priorities for Invasive Non-native Plants: A Strategy for Regional Implementation, San Diego County, California. Prepared by the Conservation Biology Institute, Dendra Inc. and California Invasive Plant Council for the San Diego Association of Governments. Contract No. 5001322. September 2012. Center for Natural Lands Management (CNLM). 2010. Appendix 4. CSS long-term monitoring plan in Calavara Hills and Robertson Ranch Habitat Conservation Area Annual Work Plan October 2009–2010 City of Carlsbad. 2014. Carlsbad HMP Post-Fire Monitoring Protocol. City of Carlsbad, Center for Natural Lands Management and ESA & Associates. September 11, 2014. CNLM. 2013. City of Carlsbad Preserves Annual Report. October 1, 2012–September 30, 2013. Prepared for the City of Carlsbad. CNLM. 2018a. CNLM-San Diego Thornmint (Acanthomintha ilicifolia) Seed Collection and Expansion Procedures. November 9. CNLM. 2018b. City of Carlsbad Preserves Annual Report. October 1, 2017–September 30, 2018. Prepared for U.S. Fish and Wildlife Service, California Department of Fish and Game, and the City of Carlsbad. October 2018. CNLM. 2019a. Buena Vista Creek Ecological Reserve Annual Stewardship Report. October 1, 2018–September 30, 2019. Prepared for U.S. Fish and Wildlife Service, California Department of Fish and Game, and the City of Carlsbad. November 2019. CNLM. 2019b. Kelly Ranch Habitat Conservation Area Annual Stewardship Report. October 1, 2018–September 30, 2019. Prepared for U.S. Fish and Wildlife Service, California Department of Fish and Game, and the City of Carlsbad. November 2019. Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 48 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 CNLM. 2020a. Buena Vista Creek Ecological Reserve Annual Stewardship Report. October 1, 2019 – September 30, 2020. Prepared for U.S. Fish and Wildlife Service, California Department of Fish and Game, and the City of Carlsbad. November 2020. CNLM. 2020b. Calavera Hills/Robertson Ranch Habitat Conservation Area Annual Stewardship Report. October 1, 2019–September 30, 2020. Prepared for U.S. Fish and Wildlife Service, California Department of Fish and Game, and the City of Carlsbad. November 2020. CNLM. 2020c. City of Carlsbad Preserves Annual Stewardship Report. October 1, 2019– September 30, 2020. Prepared for U.S. Fish and Wildlife Service, California Department of Fish and Game, and the City of Carlsbad. November 2020. CNLM. 2020d. Kelly Ranch Habitat Conservation Area Annual Stewardship Report. Prepared for U.S. Fish and Wildlife Service, California Department of Fish and Game, and the City of Carlsbad. November 2020. CNLM. 2020e. Rancho La Costa Habitat Conservation Area Annual Stewardship Report. Prepared for U.S. Fish and Wildlife Service, California Department of Fish and Game, and the City of Carlsbad. November 25, 2019. CNLM and Environmental Science Associates (ESA). 2013. City of Carlsbad 2013 Coastal California Gnatcatcher Survey Results. Prepared for the City of Carlsbad November, 2013. CNLM and ESA. 2020. Poinsettia Post-Fire Monitoring Results 2015–2019. Prepared for the City of Carlsbad February 2020. Cotton/Beland/Associates, Inc. 2000. Revised Draft Environmental Impact Report Appendices for the Carlsbad Municipal Golf Course, January 2000. Cummings, Gretchen. 2018. Preserve Manager, Urban Corps. Personal communication. Feucht, E.J., M.A. Colwell, D.J. Orluck, N.C. Papian, K.M. Raby, and S.E. McAllister. 2017. Final Report: 2017 Snowy Plover Breeding in Coastal Northern California, Recovery Unit 2. Wildlife Department, Humboldt State University, Arcata. Foster, B. 2011, August 9. Correspondence between Dr. Foster and Least Tern group [electronic communication]. Batiquitos Lagoon survey results. Frost, N. 2017. California Least Tern Breeding Survey 2016 Season. Prepared for the California Department of Fish and Wildlife, June 2017. HRS [Habitat Restoration Sciences, Inc.] 2014. Manzanita Partners Preserve Annual Report. Prepared for the City of Carlsbad, November 2014. HRS. 2020. Manzanita Partners Preserve Annual Report. Prepared for the City of Carlsbad. November 2020. Holland, R. 1986. Preliminary descriptions of the terrestrial natural communities of California. Unpublished document, California Department of Fish and Game, Natural Heritage Division. Sacramento, CA. Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 49 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 Kus, B., K. Preston, A. Houston. 2017. Regional Occupancy and Post-Fire Recovery of California Gnatcatchers in Southern California. U.S. Department of the Interior U.S. Geological Survey. Western Ecological Research Center San Diego Field Station. Power Point presentation. MHCP. 2003. Final Multiple Habitat Conservation Plan, Vol. III: MHCP Biological Monitoring and Management Plan. Prepared by California Department of Fish and Game, U. S. Fish and Wildlife Service, and Conservation Biology Institute for the Multiple Habitat Conservation Program. Administered by SANDAG. March 2003. Niehaus, T.F. 1971. “A Biosystematic Study of the Genus Brodiaea (Amaryllidaceae).” U.C. Publications in Botany 60 (1): 1–66 NOAA [National Oceanic and Atmospheric Administration]. 2020. Precipitation data. http://water.weather.gov/precip/ Oberbauer, Thomas. 2008. Terrestrial Vegetation Communities in San Diego County Based on Holland’s Descriptions. Revised from 1996 and 2005. July. Rosie, D. 2010. Results of a 2009-2010 first year wet season fairy shrimp survey for the City of Carlsbad Coastal Rail Trail Reaches 4 and 5 Project. Prepared by LSA Associates for the City of Carlsbad, April 2010. SANDAG [San Diego Association of Governments]. 2011. Vegetation Classification Manual for Western San Diego County. Prepared by AECOM, CDFW Vegetation Classification and Mapping Program, and CBI. February 2011. SDMMP [San Diego Management and Monitoring Program]. 2011. Connectivity Monitoring Strategic Plan for the San Diego Preserve System. Prepared for the San Diego Environmental Mitigation Program Working Group. SDMMP [San Diego Management and Monitoring Program]. 2017. Management Strategic Plan 2017 Rare Plant Monitoring Protocol. SDMMP [San Diego Management and Monitoring Program]. 2017a. Management and Monitoring Strategic Plan for Conserved Lands in Western San Diego County: A Strategic Habitat Conservation Roadmap; Volume 2D: Goals and Objectives for Species Focus Management Species. Prepared for San Diego Association of Governments (SANDAG), 2017. SDMMP [San Diego Management and Monitoring Program]. 2017b. San Diego Management and Monitoring Program website. Coastal California Gnatcatcher Goals and Objectives. https://portal.sdmmp.com/view_species.php?taxaid=925072 Sisson, P. 2011. Carlsbad: Nests at lagoon are sitting ducks due to budget freeze. North County Times, July 16, 2011. Spiegelberg, Markus. 2018. Preserve Area Manager, Center for Natural Lands Management. Personal communication. Carlsbad Habitat Management Plan (HMP) Triennial Monitoring Summary Report 2018–2020 50 ESA / D201700606.04 Carlsbad Habitat Management Plan (HMP) March 2021 Spiegelberg, M and J. Vinje. 2008. Rancho La Costa Habitat Conservation Area Annual Report, October 2007–September 2008. Prepared for the City of Carlsbad, December 2008. Squires, L., and S. Wolf. 2010. The Status of California Least Tern and Western Snowy Plover at Batiquitos Lagoon, California in 2009 Breeding Season. Prepared for the California Department of Fish and Game. Technology Associates (TAIC), 2004. City of Carlsbad Open Space Management Plan. Prepared in association with the Center for Natural Lands Management for the City of Carlsbad Planning Department. September, 2004. USFWS [U.S. Fish and Wildlife Service]. 2010. Arctostaphylos glandulosa ssp. crassifolia (Del Mar Manzanita), 5-Year Review: Summary and Evaluation. Zembal, R., S. Hoffman, R.T. Patton. 2015. A Survey of the Belding’s Savannah Sparrow (Passerculus sandwichensis beldingi) in California. Prepared for the California Department of Fish and Game, 2015. Zembal, R., S.M. Hoffman, and J. Konecny. 2020. Light-footed Ridgway’s (Clapper) Rail in California 2020 Season. Clapper Rail Recovery Fund, Huntington Beach Wetlands Conservancy. November 2020. Zembal, R. 2020. Natural Resources Director Orange County Water District. Personal communication.