Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
CT 98-19; Roesch Property Residential Subdivision; Tentative Map (CT) (45)
BIOLOGICAL RESOURCES ASSESSMENT OF THE ROESCH SITE LOCATED IN THE CITY OF CARLSBAD, COUNTY OF SAN DIEGO, CALIFORNIA Prepared for: Prepared By: Date: Standard Pacific Homes 9335 Chesapeake Drive San Diego, California 92123 Contact: Mr. Gregg Linhoff Natural Resource Consultants 30 Crystal Cove Laguna Beach, California 92651 Contact: Mr. David Levine December 8, 1998 TABLE OF CONTENTS SECTION EAGE 1.0 INTRODUCTION 1 2.0 SITE LOCATION AND GENERAL CONDITIONS 1 3.0 BIOLOGICAL SURVEY METHODS 2 4.0 VEGETATION COMMUNITIES 2 4.1 CHAPARRAL 3 4.1.1 Southern Maritime Chaparral 4 4.2 DIEGAN COASTAL SAGE SCRUB 4 4.2.1 Coastal Sage Scrub—Lemonadeberry 5 4.2.2 Coastal Sage Scrub—Black Sage 5 4.2.3 Coastal Sage Scrub—California Sagebrush 6 4.2.4 Coastal Sage Scrub—Mixed 6 4.2.5 Coastal Sage Scrub—Disturbed 7 4.3 OTHER SCRUB VEGETATION 7 4.3.1 Coyote Bush 7 4.4 RIPARIAN SCRUB 7 4.4.1 Southern Willow Scrub 7 4.4.2 Mulefat Scrub 8 4.5 WOODLAND 8 4.5.1 Eucalyptus Woodland 8 4.6 GRASSLANDS 8 4.6.1 Annual Grassland 8 4.6.2 Native Grassland 9 4.6.3 Freshwater Seep 9 4.7 OTHER VEGETATION 9 4.7.1 Ruderal 9 4.7.2 Agricultural 10 4.7.3 Graded 10 4.7.4 Developed 10 5.0 SENSITIVE BIOLOGICAL RESOURCES 11 5.1 SENSITIVE VEGETATION COMMUNITIES 11 5.1.1 Coastal Sage Scrub Communities 11 5.1.2 Southern Maritime Chaparral 12 5.1.3 Potential Wetland Habitats 12 5.2 SENSITIVE PLANT SPECIES 12 5.2.1 Sensitive Plant Species Detected Onsite 12 6.0 IMPACTS OF THE PROPOSED PROJECT 14 6.1 IMPACTS TO VEGETATION COMMUNITIES 15 6.2 IMPACTS TO SENSITIVE SPECIES 15 6.2.2 Impacts to Sensitive Wildlife 17 6.3 OTHER POTENTIAL IMPACTS 18 7.0 MITIGATION MEASURES 18 7.1 SENSITIVE PLANTS, NESTING RAPTORS, CALIFORNIA GNATCATCHERS 18 7.2 LEVEL OF SIGNIFICANCE AFTER MITIGATION 19 8.0 REFERENCES CITED 19 LIST OF TABLES TABLE I BIOLOGICAL SURVEY INFORMATION 2 II VEGETATION COMMUNITIES 3 ffl SENSITIVE PLANT AND WILDLIFE SPECIES following pagell IV IMPACTS TO VEGETATION COMMUNITIES 16 LIST OF EXHIBITS EXHIBIT 1 DEVELOPMENT PLAN 1 2 REGIONAL MAP 1 3 VICINITY MAP 1 4 CARLSBAD DRAFT HMP 1 5 VEGETATION MAP 3 APPENDICES Appendix A Floral and Fauna! Compendia 1.0 INTRODUCTION Natural Resource Consultants (NRC) was retained by Standard Pacific to prepare a biological resources assessment for the approximately 27.6 acre Roesch site (the site) located in the City of Carlsbad, County of San Diego, California. This report provides the methods, results, and conclusions of surveys for general biological resources and focused surveys for sensitive plant and wildlife species potentially occurring on the site. Information in this report incorporates the results of NRC's studies conducted in March and April of 1998 and November of 1998 as supplemented by information provided by Planning Systems (1997) pertaining to the vegetation resources on the site and Jack Henthorn & Associates pertaining to regional habitat conservation planning (1998). Standard Pacific proposes to develop approximately 6.61 acres of the 27.62 acre Roesch site (approximately 24 percent) for residential uses (Exhibit 1). The site plan includes approximately 20 acres of natural open space that is contiguous with natural open space resources identified in the City of Carlsbad Draft Habitat Management Plan as a regionally important biological linkage. The anticipated impacts of the proposed project on site-specific and regional biological resources are evaluated and general mitigation measures, designed to offset adverse project impacts, are described. Mitigation measures are designed to be consistent with the requirements of the California Department of Fish and Game (CDFG), U.S. Fish and Wildlife Service (USFWS), and City of Carlsbad Draft HMP (December 1, 1997). 2JQ SITE LOCATION AND GENERAL CONDITIONS The Roesch site is located in the County of San Diego within the City of Carlsbad. The site is located south of Palomar Airport Road and approximately 1.5 miles east of the San Diego Freeway and 3 miles north of Batiquitos Lagoon. The site is shown within Sections 21 and 22 of U.S. Geologic Survey Encinitas Quadrangle (Exhibits 2 and 3). The site lies within Zone 20 LFMP in the central portion of Biological Linkage Area F of the City of Carlsbad HMP. The HMP conservation goals for this portion of Zone 20 include; conserving the majority of natural habitats, ensuring a net loss of no more than 20 percent of costal sage scrub and 10 percent of southern maritime chaparral, and conserving narrow endemic plant populations. Moreover, the goals are to conserve habitat in a configuration through Linkage Area F, such that this connection will allow continued wildlife movement between Core Areas 4 and 6 (Exhibit 4). Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 1 December 8,1998 EXHIBIT 1 pceansitiev'"- <64) '"•' " PROPERTYROESCH Leucadia \,VS4» •'. ": ' Y _r" •' ' m Eiffel nitas K\ ''^?Cardiff-^ ^/•> f^ ^"r J t^f' ''••"'GaiQKto . _, _ inda ,Vi<*.ax^O. ^x-E^V ^ffr-Hf f Printed fipinTQFO! ©1997 Wildflower Productioas (www.tQpQ.com) REGIONAL LOCATION MAP ROESCH PROPERTY SAN DIEGO COUNTY, CALIFORNIA SCALE: 1:250,000 April 1998 NORTH Natural Resource Consultants EXHIBIT 2 L [ M «L 11^^r^PBW^ U.S.G.S. LOCATION MAP ROESCH PROPERTY ENCINITAS QUADRANGLE SCALE: 1"=2,OOO' April 1998 Natural Resource Consultants DC * <o 2 o£U _l CO "3e CO QC "S.o ODD BIOLOGICAL SURVEY METHODS NRC conducted biological field surveys on the Roesch site in March and April of 1998 and November of 1998. The surveys were intended to provide an inventory of biological resources present on the site including the occurrence of rare, threatened, or endangered plant or wildlife species. Table I lists the survey dates, times, weather conditions, and purpose of survey. TABLE I BIOLOGICAL SURVEY INFORMATION ROESCH SITE Date Februaiy 18, 1998 March 2, 1998 March 6, 1998 March 11, 1998 March 17, 1998 March 23, 1998 November 22, 1998 Time 2:00 p.m. to 4:00 p.m. Il:45a.m.to5:45 p.m. 1 1 :00 a.m. to 3:00 p.m. 12:30 p.m. to 2:30 p. m. 10:00a.m. to 12:30p.m. 8:20 to 10:52a.m. 9:00 a.m. to 12:00 p.m. Weather Partly cloudy, light winds & mild temperature. Sunny, with light winds and warm temperatures. Showers turning to partly cloudy, moderate wind, mild temperature. Clear with light winds and temperatures in the low to mid eighties. Overcast, no wind, mild temperatures. Clear, mild winds, mild to hot temperatures. Clear, light winds, mild temperatures Biologist(s) MC.NH SL.NH MC.NH MC MC.JK MC DL MC - Michael Couffer NH - Nigel Hancock SL - Spencer Langdon DL - David Levine VEGETATION COMMUNITIES A total of 17 different vegetation communities have been mapped on the Roesch site. The acreage of each community is summarized in Table II and the characteristics of each community are described in the following paragraphs. Exhbit 5 shows the extent and location of each vegetation community on site. Biological Resources Assessment Roesch Site, City of Carlsbad, California Natural Resource Consultants Decembers, 1998 DEV - LEGEND Vegetation Communities Chaparral SMaC Southern maritime chaparral Coastal Sage Scrub CSS-R = Coastal sage scrub—lemonadeberry (Rhus integrifolio) CSS-S = Coastal sage scrub—black sage (Salvia mellifera) CSS-A = Coastal sage scrub—California sagebrush (Artemisia californicd) CSS-M = Coastal sage scrub—mixed dominance CSS-D = Coastal sage scrub—disturbed CSS/AGL = Mixed coastal sage scrub—annual grassland Other Scrub Vegetation CBS = Coyote brush (Baccharis pilularis) scrub Riparian Scrub SWS = Southern willow scrub Woodland OW = Coast live oak woodland EW = Eucalyptus woodland Grasslands AGL = Annual grassland NGL = Native grassland FWS = Freshwater seep Wetlands DW = Disturbed wetland Other Vegetation RUD = Ruderal AGR = Agricultural GR = Graded MFS Mulefat scrub DEV Developed 0 Roesch Property 2C)0 4C>0 600 Feet March 1998 1l North Biological Resources Map Natural Resource Consultants TABLEn ACREAGE OF VEGETATION COMMUNITIES ON THE ROESCH SITE VEGETATION COMMUNITY Annual Grasslands Agricultural Coyote Bush Scrub CSS - Artemisia californica CSS - Salvia mellifera CSS - Rhus integrifolia CSS - Mixed Southern Maritime chaparral CSS - Disturbed Fresh Water Seep Graded Mulefat Scrub Native Grasslands Ruderal Southern Willow Scrub Eucalyptus Woodland Developed TOTAL MAP SYMBOL AGL AGR CBS CSS-A CSS-S CSS-R CSS-M SMaC CSS-D FWS GR MFS NGL RUD SWS EW DEV — ACREAGE 4.26 5.02 0.18 3.6 3.2 1.61 1.7 4.16 0.7 0.15 0.31 0.5 0.45 0.9 0.45 0.01 0.42 27.62 4.1 CHAPARRAL Chaparral is one of the two dominant native vegetation types in this region of California. Chaparral communities are dominated by evergreen shrubs that have small, thick, leathery leaves to resist water losses. Stands of chaparral generally constitute more or less dense, continuous cover of shrubs all of similar height, although this height varies from about 3 feet to over 12 feet, depending on the chaparral type, the soil quality, and aspect. Biological Resources Assessment Roesch Site, City of Carlsbad, California Natural Resource Consultant! Decembers, 1998 Chaparral communities go through frequent cycles of burning and regeneration. The floral diversity, especially of herbaceous species, is greatest during the first years of regeneration following a fire. Within the Roesch site, there is chaparral undergoing various stages of this process; these stages are relatively transitory, and have not been distinguished. One type of chaparral (southern maritime chaparral) is present on the Roesch site. 4.1.1 Southern Maritime Chaparral Southern maritime chaparral is a mixed-dominance chaparral. Its important species include those characteristic of southern mixed chaparral found further inland, together with several species that are restricted to the immediate coastal area. It occurs on weathered sandstone soils, and lies within the coastal fog belt. Dominant species in the southern maritime chaparral on the Roesch site are chamise (Adenostomafasciculatum), white coast ceanothus or wart-stemmed lilac (Ceanothus verrucosus), and mission manzanita (Xylococcus bicolor), with thickleaf yerba santa (Eriodictyon crassifolium). Nuttall's scrub oak (Quercus dumosa), Mojave yucca (Yucca schidigera), and Ramona lilac (Ceanothus tomentosus var. olivaceus) also occur. Recovering burned areas have abundant peak rush-rose (Helianthemum scoparium), black sage (Salvia mettifera), and mesa bush-mallow (Malacothamnusfasciculatus). Southern maritime chaparral often has a relatively open cover of shrubs. In the understory, characteristic species are golden yarrow (Eriophyllum confertiflorum), blue dicks or wild hyacinth (Dichelostenvna capitation), ashy spike-moss (Selaginella cinerascens), purple needlegrass (Nasellapulchra), California plantain (Plantago erecta), pygmy-weed (Crassula connata), and western dichondra (Dichondra occidentalis). On north-facing slopes, common eucrypta (Eucrypta chrysanthemifolia) and miner's lettuce (Claytonia perfoliata) are also typical. On the Roesch site, southern maritime chaparral occurs in the eastern half of the site, on the upper part of the slopes leading down from the level agricultural area. 4.2 DffiGAN COASTAL SAGE SCRUB Coastal sage scrub is the second of the two dominant native vegetation types in this part of California. It occurs in the same general areas as chaparral, but tends to occupy drier, more xeric situations, such as south-facing slopes in contrast to chaparral-covered north-facing Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 4 December 8,1998 slopes. Sage scrub communities are dominated by lower-growing shrubs and subshrubs that lose their leaves to minimize water losses during summer drought. They may replace them with lesser amounts of smaller leaves. Many of the shrubs and subshrubs in coastal sage scrub are 3-6 feet tall, and have relatively open canopies. There is therefore often a significant herbaceous understory, including native grasses and colorful native annual wildflowers. Three different types of Diegan coastal sage scrub have been mapped, based on the dominant shrubby species in each case. In addition, mixed dominance and disturbed associations have been recognized. 4.2.1 Coastal Sage Scrub—Lemonadeberry (Rhus integrifotia) dominated This type of coastal sage scrub forms a transition from chaparral communities, and is described first for that reason. It is completely dominated by lemonadeberry, with lesser amounts of toyon (Heteromeles arbutifolia) and often laurel sumac (Malosma laurina). These three species are tall, evergreen shrubs with leathery leaves, and fit the description of chaparral species. However, these three species are always found scattered in smaller numbers through coastal sage scrub of all types, and in lemonadeberry-dominated coastal sage scrub, other chaparral species are absent. There is debate among botanists as to whether this community should be classified as a type of sage scrub, or a type of chaparral. The few openings between the taller shrubs are occupied by sage scrub species, mainly California bush sunflower (California bush sunflower), with manroot or wild cucumber (Marah macrocarpus), bush monkey-flower (Mimulus aurantiacus), and giant wild rye (Leymus condensatus). On the Roesch site, lemonadeberry-dominated coastal sage scrub is confined to steep slopes in the west and north of the site. 4.2.2 Coastal Sage Scrub—Black Sage (Salvia meUifera) dominated Black sage-dominated coastal sage scrub is strongly dominated by black sage, although it includes abundant toyon, and also California sagebrush (Artemisia californica) and flat-top Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 5 December 8, 1998 buckwheat (Eriogonwnfasciculatum). Bush monkey-flower is abundant on north-facing slopes. Herbaceous plants in openings between the shrubs include both native and introduced annual grasses, and a variety of annual wildflowers. Granny's hairnet (Pterostegia drymarioides) is widespread, although inconspicuous. Goldenback fem (Pentagramma triangularis ssp. triangularis) and the closely related silverback fern (Pentagramma triangularis ssp. viscosa) both occur in this community. On the Roesch site, black sage-dominated coastal sage scrub occupies hill slopes adjacent to areas of southern maritime chaparral. It is conspicuously developed across the center of the site. 4.2.3 Coastal Sage Scrub—California Sagebrush (Artemisia caUfornica) dominated California sagebrush-dominated coastal sage scrub is the typical form of sage scrub. California sagebrush is the most abundant species, but there is usually a fair diversity, with black sage, flat-top buckwheat, scattered lemonadeberry and coast prickly-pear (Opuntia littoralis). Important smaller shrubs are deerweed (Lotus scoparius), peak rush-rose, and coast goldenbush (Isocoma menziesif). This community is usually relatively open, and includes many herbaceous species, especially native needlegrasses (Nasella spp.), with chia (Salvia columbariae), California plantain, ground pink (Linanthus dianthifloms), owlsclover (Castilleja exserta, formerly Orthocarpus purpurascens) and blue toadflax (Linaria canadensis). On the Roesch site, California sagebrush-dominated coastal sage scrub occurs in a number of patches, mainly on south- and west-facing slopes in the western and southern half of the area. 4.2.4 Coastal Sage Scrub—Mixed dominance This community consists of coastal sage scrub with two, or usually three co-dominant species from among California sagebrush, black sage, flat-top buckwheat, and lemonadeberry. Laurel sumac, toyon, Mexican elderberry (Sambucus mexicana), and coyote bush (Baccharis pilularis) are also included. There is a patch of mixed coastal sage scrub in the northeastern part of the Roesch site. 4.2.5 Coastal Sage Scrub—Disturbed Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 6 December 8, 1998 Coastal sage scrub has been defined as disturbed when only some 50-75% of ground cover comprises coastal sage scrub shrubs and subshrubs. Here these shrubs include a high percentage of California bush sunflower, with thickleaf yerba santa, mesa bush-mallow, laurel sumac, and black sage. The intervening areas are more or less weedy annual grassland, with such species as ripgut grass (Bromus diandrus), foxtail chess (Bromus madritensis ssp. rubens), and sweet fennel (Foeniculwn vulgare). There is a patch of disturbed coastal sage scrub in the northeast portion of the Roesch site, which extends eastwards on to the adjacent Ocean Bluff site. 4.3 OTHER SCRUB VEGETATION 4.3.1 Coyote Bush (Baccharis pilularis) Scrub Coyote bush scrub is heavily dominated by coyote bush, and also contains California sagebrush and fuchsia-flowered gooseberry (Ribes speciosum). The understory includes annual introduced grasses, curly dock (Rumex crispus), nettle-leaved goosefoot (Chenopodiwn murale), prickly sow- thistle (Sonchus asper), black mustard (Brassica nigra), and New Zealand geranium (Geranium retrorswri). Coyote bush scrub is typically found along valley bottoms where the water table is relatively high. On the Roesch site, it occurs in the small drainage near the southwest comer of the site. 4.4 RIPARIAN SCRUB 4.4.1 Southern Willow Scrub Southern willow scrub is a riparian scrub; that is, it occurs along stream courses. The shrubs are dominated by arroyo willow (Salix lasiolepis). Also present are Mexican elderberry, tree tobacco (Nicotiana glauca), giant wild rye, and castor bean (Ricinus commwis). The herbaceous understory consists of abundant poison hemlock (Conium maculatwn), with western ragweed (Ambrosia psilostachya), milk thistle (Sifybum marianum), California everlasting (Gnaphalium californicuni), and Bermuda buttercup (Oxalis pes-caprae). On the Roesch site, southern willow scrub occurs along much of the drainage that runs northwards through the western part of the site. Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 7 December 8, 1998 4.4.2 Mulefat Scrub Mulefat scrub is the other form of riparian scrub found in the area. The shrubs consist almost entirely of mule fat (Baccharis salicifolia), with some coyote bush. The understory includes annual introduced grasses, especially ripgut grass and foxtail chess. Poison hemlock is common, along with curly dock and western ragweed. On the Roesch site, mulefat scrub alternates with and surrounds southern willow scrub along the north-south drainage in the west of the site, and it also occurs locally in the smaller tributary east-west valleys. . 4.5 WOODLAND 4.5.1 Eucalyptus Woodland Eucalyptus woodland is overwhelmingly dominated by eucalyptus (Eucalyptus sp.) trees, introduced from Australia. These fast-growing trees produce a large amount of leaf and bark litter, which prevents other species from growing in the understory. Although originally planted by man, these eucalyptus have become naturalized and are spreading. On the Roesch site, eucalyptus woodland comprises only one or two isolated trees. 4.6 GRASSLANDS 4.6.1 Annual Grassland Annual grassland is dominated by introduced Mediterranean grasses, chiefly wild oats (Avena spp.), along with lesser foxtail chess, soft chess, and ripgut grass. It contains some native species such as miniature lupine (Lupinus bicolor), red maids (Calandrinia ciliata), strigose lotus (Lotus strigosus), and sharp-tooth sanicle (Sanicula arguta), but the most abundant non- grasses are also introduced weeds: tocalote (Centaurea melitensis), smooth cat's-ear (Hypochaeris glabra), and windmill pink (Silene gallica). The large level grassy area in the east of the Roesch site hasd been disked for agriculture, and is therefore not mapped as annual grassland. Annual grassland is present in several open areas between patches of coastal sage scrub, mainly in the western half of the site. Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 8 December 8, 1998 4.6.2 Native Grassland Native grassland is grassland where at least 10% of the cover is made up of purple needlegrass. Other grasses are also present, as in the annual grassland, especially wild oats and foxtail chess. Native grassland hosts a rich non-grass flora of wildflowers, including blue- eyed grass (Sisyrinchium helium), blue dicks, checker bloom (Sidalcea malvaeflora), hedge- nettle (Stockys ajugoides var. rigidd), and Padres' shooting star (Dodecatheon clevelandii), along with introduced species: smooth cat's-ear, long-beaked filaree (Erodium botrys), and red-stemmed filaree (Erodium cicutarium). There are also larger, more or less woody plants such as coast goldenbush and gumplant (Grindelia sp.). On the Roesch site, native grassland is confined to small openings on north-facing slopes. It has been mapped only at two locations in the center of the area. However, there are a number of other occurrences, too small to map. 4.6.3 Freshwater Seep Freshwater seeps are open areas covered with mostly perennial herbs, especially sedges and grasses, usually forming complete cover. They are characterized by permanently moist soil due to emergence of water from underground rock strata. The dominant species that forms much of the ground cover here is pale spike-rush (Eleocharis macrostachyd). It is accompanied by rushes (Juncus spp.), giant wild rye, blue-eyed grass, checker bloom, Padres' shooting star, and New Zealand geranium. Freshwater seeps occur in two locations along the bottom of the east-west valley runnng across the center of the site. 4.7 OTHER VEGETATION 4.7.1 Ruderal Ruderal habitat is indicative of disturbed areas. It is dominated by coarse weedy introduced broad-leaved species, especially wild radish (Raphanus sativus), black mustard, cheeseweed (Malvaparviflord), and lamb's quarters (Chenopodium album). Other common species are common sow-thistle (Sonchus oleraceus), yellow sweet-clover (Melilotus indica), London rocket (Sisymbrium mo), common fiddleneck (Amsinckia menziesii), white-stemmed filaree (Erodium moschatum), and red-stemmed filaree. Adjacent to the developed greenhouse area Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 9 December 8, 1998 just offsite, there are also Indian fig (Opuntiaficus-indica) and garden nasturtium (Tropaeolum majus). On the Roesch site, ruderal vegetation has been mapped in various locations, mainly adjacent to agricultural land, developed areas, and roadsides. 4.7.2 Agricultural There is a large, more or less level, area of agricultural land in the southeast of the Roesch site. The agricultural designation is used here for areas that have in the past been disked, probably regularly, for agricultural purposes. The dominant species are annual introduced grasses, including wild oats, foxtail chess, barley (Hordewn spp.), soft chess (Bromus hordaceus), and ripgut grass, together with introduced broad-leaved weeds. The latter include white-stemmed filaree and red-stemmed filaree, wild radish, common chickweed (Stellaria media), spurrey or starwort (Spergula arvensis), small-flowered galinsoga (Galinsoga parviflora var. parviflora), common groundsel (Senecio vulgaris), bur-clover (Medicago polymorpha), common sow-thistle, wild lettuce (Lactuca sp.), horseweed (Conyza spp.), hare's-ear cabbage (Sisymbrium orientate), London rocket, field mustard (Brassica rapa), black mustard, and Indian mustard. 4.7.3 Graded The graded designation has been applied to freshly graded areas where significant amounts of dirt have been either scraped off or added, so that regeneration of the original vegetation is unlikely. At the time of the survey, graded areas extend a short way on to the site on the northern and western edges, from adjacent developed sites. 4.7.4 Developed Developed habitat includes buildings, pavement and roads, nurseries and storage yards. In this case, the developed area comprises a dirt road running down the north-south valley in the west of the site, under the power lines. Several plant species grow conspicuously along the dirt road on the Roesch site. These are villous sand-spurry (Spergularia villosa) and Boccone's sand-spurry (Spergularia bocconii), red maids, California plantain, and common goldfields (Lasthenia californica). Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 10 December 8, 1998 5JI SENSITIVE BIOLOGICAL RESOURCES Sensitive biological resources potentially occurring in the vicinity of the Roesch site were determined through evaluation of the California Natural Diversity Data Base (CDFG 1998) and the California Native Plant Society's Inventory of Rare and Endangered Plants of California (Skinner and Pavlik 1994), supplemented by published documents pertaining to the biological resources in this area. Sources used for the determination of listing status include: Holland (1986) for vegetation communities; USFWS (1996) and CDFG (1996) for plants; and USFWS (1996; 1994), and CDFG (1995; 1994) for wildlife. The sensitive vegetation communities, sensitive plant species, and sensitive wildlife species that have been detected on the Roesch site are discussed in this section. A complete list of sensitive plant and wildlife species detected on site, and species potentially occurring and not detected on site is presented in Table HI. 5.1 SENSITIVE VEGETATION COMMUNITIES Sensitive vegetation communities are those communities that are of highly limited distribution. These communities may also support concentrations of sensitive plant or wildlife species. 5.1.1 Coastal Sage Scrub Communities Diegan coastal sage scrub is considered a sensitive habitat by the CDFG (Holland 1986). This is due to the scarcity of this vegetation community and the number of sensitive species associated with it. Conservation of coastal sage scrub habitats is an important planning issue throughout southern California. To balance development with conservation of this resource, the State of California and USFWS have implemented the Natural Communities Conservation Plan (NCCP) for coastal sage scrub communities. The NCCP allows land owners and resource protection agencies to identify specific areas for conservation while allowing compatible development. 5.1.2 Southern Maritime Chaparral Southern maritime chaparral is considered a sensitive habitat by the CDFG (Holland 1986). This plant community is restricted to sandstone soils located in the vicinity of Del Mar and Carlsbad (CNDDB 1995). It is estimated that approximately 2,000 acres of this vegetation community exist in San Diego County (CNDDB 1995). Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 11 December 8,1998 TABLE ffl SENSITIVE PLANT AND WILDLIFE SPECIES DETECTED AND NOT DETECTED ON THE ROESCH SITE Species ID No.1 A *1. 2. *3. 4. 5. *6. 7. 8. 9. 10. *11. 12. 13. 14. 15. 16. 17. Species Name Status1 USFWS Plants Acanthomintha ilicifolia San Diego thommint Adolphia californica California adolphia Arctostapylos glandulosa ssp. crassifolia Del Mar manzanita Artemisia palmeri San Diego sagewort Atriplex pacifica South Coast saltscale Baccharis vanessae Encinitas baccharis Bergerocactus emoryi Golden-spined cereus Brodiaeafilifolia Thread-leaved brodiaea Brodiaea orcuttii Orcutt's brodiaea Calandrinia breweri Brewer's calandrinia Ceanothus verrucosus White coast ceanothus Chorizanthe orcuttiana Orcutt's spineflower Chorizanthe polygonoides var. longispina Long-spined spineflower Chorizanthe procumbens Prostrate spineflower Comarostaphylos divers ifolia ssp. diversifolia Summer holly Coreopsis maritima Sea dahlia Lessingia filaginifolia var. incana San Diego sand aster FPE ~ FE ~ FSC FPE — FPT FSC -- FSC FPE FSC ~ FSC ~ ~ CDFG CE — — — CE — CE -- — CE — -- -- Other* List IB List 2 List IB List 2 List IB List IB List 2 List IB List IB List 4 List 2 List IB List IB List 4 List IB List 2 List IB Detected or Not Detexcted On Site Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Detected on site. This species was detected within the chaparral vegetation, and scattered within the coastal sage scrub vegetation. Not detected on site. Not detected on site. Not detected on site, n site. Not detected on site. Not detected on site. Not detected on site. Biological Resources Assessment Roesch Site, City of Carlsbad, California December 8,1998 Natural Resourc Consultants *18. 19. *20. *21. *22. 23. 24. 25. 26. 27. 28. 29. 30. *31. *32. 32. 33. B Lessingia filaginifolia Del Mar sand aster Dichondra occidental!* Western dichondra Dudleya blochmaniae ssp. brevifolia Short-leaved dudleya Dudleya variegata Variegated dudleya Eryngium aristulatum var. parishii San Diego button-celery Ferocactus viridescens Coast barrel cactus Grindelia hirsutula var. hallii San Diego gumplant Harpagonella palmeri Palmer's grapplinghook Iva hayesiana San Diego marsh-elder Monardella linoides ssp. viminea Willowy monardella Muilla clevelandii San Diego goldenstar Ophioglossum californicum California adder's-tongue fern Orobanche parishii ssp. brachyloba Short-lobed broomrape Pinus torreyana ssp. torreyana Torrey pine Pogogyne abramsii San Diego mesa mint Quercus dumosa Nuttall's scrub oak Selaginella cinerascens Ashy spike-moss — -- FPE FSC FSC FSC FSC FSC FPE FSC FSC FE FSC — ~ CE CE CE CE List IB List 4 List IB List 2 List IB List 2 List IB List 2 List 2 List IB List IB List 4 List IB List IB List IB List IB List 4 Not detected on site. Detected on site. This species is widely distributed onsite. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Detected on site; this species was detected within the chaparral vegetation. Detected on site; this species was detected within the southern maritime chaparral, disturbed coastal sage scrub, and disturbed non-native grassland/coastal sage scrub communities. Invertebrates Biological Resources Assessment Roesch Site, City of Carlsbad, California Decembers, 1998 Natural Resourc Consultants 34. *35. *36. C 37. D 38. *39. 40. 41. 42. 43. 44. *45. 46. 47. E *48. Euphydryas editha quino Quino checkerspot Branchinecta sandiegoensis San Diego fairy shrimp Strep tocephalus woottoni Riverside fairy shrimp Amphibians Scaphiopus hammondi Western spadefoot Reptiles Amelia pulchra pulchra Silvery legless lizard Cnemidophorus hyperythrus Orange-throated whiptail Cnemidophorus tigris multiscutatus Coastal western whiptail Crotalus ruber ruber Northern red-diamond rattlesnake Eumeces skiltonianus interparielalis Coronado skink Diadophis punctatus similis San Diego ringneck snake Lichanura trivirgata rosafusca Coastal rosy boa Phrynosoma coronatum blainvillei San Diego horned lizard Salvadora hexalepis virgultea Coast patch-nosed snake Thamnophis hammondi Two-striped garter snake Birds Accipiter cooperii Cooper's hawk FE FPE FE FSC FSC FSC FSC FSC FSC FSC FSC FSC FSC FSC ~~ CSA CSA CSC CSC CSC CSA CSC CSC CSA CSA CSC CSC CSA CSC ™" " SDSS SDSS SDSS " SDSS SDSS SDSS Food plant (Plantago erecta) detected on site. No Quino checkerspot detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Biological Resources Assessment Roesch Site, City of Carlsbad, California Decembers, 1998 Natural Resourc Consultants 49. 50. *51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61. *62. 63. F Accipiter s hiatus Sharp-shinned hawk Ammodramus savannarum Grasshopper sparrow Aimophila ruficeps canescens S. California rufous-crowned sparrow Amphispiza belli belli Bell's sage sparrow Cathartes aura Turkey vulture Chordeiles acutipennis Lesser nighthawk Circus cyaneus Northern harrier Dendroica petechia Yellow warbler Elanus leucurus White-tailed kite Eremophila alpestris actia California horned lark Geococcyx californianus Greater roadrunner Icteria virens Yellow-breasted chat Lanius ludovicianus Loggerhead shrike Polioptila californica californica California gnatcatcher Speotyto cunicularia hypugaea Western burrowing owl ™ FSC FSC " " FSC " FSC FT CSC CSC CSC " CSC CSC CSA CSC " CSC CSC CSC CSC ™" SDSS SDSS SDSS SDSS SDSS SDSS SDSS " SDSS SDSS " SDSS SDSS Not detected on site. Not detected on site.. Not detected on site.. Not detected on site.. Detected on site; this species was detected foraging over the site. Not detected on site. Not detected on site. Not detected on site. Detected on site; this species was detected foraging over the site. Not detected on site.. Detected on site. Not detected on site. Detected on site within chaparral habitat. Two pairs detected on site within coastal sage scrub Not detected on site. Mammals Biological Resources Assessment Roesch Site, City of Carlsbad, California Decembers, 1998 Natural Resourc Consultants 64. 65. 66. 67. 68. *69. 70. 71. 72. 73. 74. 75. 76. 77. Antrozous pallidus Pallid bat Chaetodipus fallaxfallax Northwestern San Diego pocket mouse Choeronycteris mexicana Mexican long-tongued bat Euderma maculatum Spotted bat Eumops perotis calif ornicus Greater western mastiff bat Felis concolor Mountain lion Lepus californicus bennettii San Diego black-tailed jackrabbit Myotis evotis Long-eared myotis Myotis volans Long-legged myotis Myotis yumanensis Yuma myotis Neotoma lepida intermedia San Diego desert woodrat Onychomys torridus ramona Southern grasshopper mouse Perognathus longimembris pacificus Pacific pocket mouse Plecotus townsendii Townsend's big-eared bat " m FSC FSC FSC FSC " FSC FSC FSC FSC FSC FSC FE CSC CSC CSC CSC CSC CFP CSC " " " CSC CSC CSC CSC ™~ " " " " " " " " " " " ~~ SDSS Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site. Not detected on site Not detected on site. Not detected on site. Not detected on site. Not detected on site. Indicates a Cover Species Under the Multiple Species Conservation Program Species Identification Number - For ease of cross referencing, the species identification letters and numbers utilized in this table correspond to Appendix D. Status - See Appendix C for definitions of senstivity categories. California Native Plant Society - This designation is only applicable to plant species. Biological Resources Assessment Roesch Site, City of Carlsbad, California Decembers, 1998 Natural Resourc Consultants 5.1.3 Potential Wetland Habitats The site includes several habitats that are likely to be under the jurisdiction of the U.S. Army Corps of Engineers (ACOE) according Section 404 of the Clean Water Act and the CDFG according to section 1600 of the Fish and Game Code. These habitats include the freshwater seep (0.15 acres), mulefat scrub (0.5 acres), and Southern willow scrub (0.45 acres). The proposed project will not result in direct or indirect impacts to these areas. 5.2 SENSITIVE PLANT SPECIES Sensitive plant species detected on site and plant species potentially occurring and not detected on the Roesch site are summarized in Table HI. This table provides the listing status, habitat type, and presence or absence of each species on the Roesch site. 5.2.1 Sensitive Plant Species Detected Onsite Several sensitive plants occur on the Roesch site. All of these species are associated with the southern maritime chaparral, to a lesser extent, and coastal sage scrub communities. Nuttall's scrub oak (Quercus dumosd) This intricately branched shrub is a former federal category 2 Candidate, a regionally sensitive species in a "southern maritime chaparral listing package" from the USFWS, and is on List IB of the CNPS inventory. It is the dominant species in scrub oak chaparral, and also occurs in mixed chaparral, principally on north-facing slopes. It grows only within about six miles of the coast, rarely in Orange County, commonly from Encinitas southwards in San Diego County, and in Baja California. White coast ceanothus, wart-stemmed lilac (Ceanothus verrucosus) This shrub is a former federal category 2 candidate, is on List 2 of the CNPS inventory, and is a MSCP Covered Species. It occurs in chaparral close to the coast, and ranges from Encinitas south to San Diego, and on into northern Baja California. Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 12 December 8, 1998 Western dichondra (Dichondra occidentatis) This low-growing perennial herb is a federal category 3c species, and is on List 4 of the CNPS inventory. It forms a ground cover below and between shrubs, principally in chaparral. It occurs only within two or three miles of the coast, and ranges from southern Orange County southwards into northern Baja California. Ashy spike-moss (Selaginella cinerascens) This tiny prostrate moss-like plant is on List 4 of the CNPS. It carpets the ground in many openings in chaparral and coastal sage scrub, especially on flat mesa tops and gentle slopes. It is almost totally confined to coastal San Diego County and adjacent northwestern Baja California. Its preferred situations are prime locations for housing, and so, although it is still fairly widespread, it is expected to become threatened by continuing development. It is ubiquitous onsite, in the habitats described above. 5.2.2 Sensitive Plant Species Potentially Occurring and Not Detected Onsite The Roesch site provides potential habitat for a variety of sensitive plants that are spring- blooming annuals and could not be detected during NRC's surveys. These species are most likely to occur in coastal sage scrub, native grassland, and chaparral communities preserved by the proposed project. 5.3 SENSITIVE WILDLIFE SPECIES Sensitive wildlife species detected or potentially occurring and not detected on the Roesch site are described below and summarized in Table in. 5.3.1 Sensitive Wildlife Species Detected Onsite Four sensitive bird species have been detected on the Roesch site. One of these species, the coastal California gnatcatcher is a federally threatened species. The other three species are raptors (birds of prey) that were observed nesting on site or foraging over the site. Coastal California Gnatcatcher (Polioptila californica californica) Two pairs of gnatcatchers were recorded on the site in March of 1998. These pairs occurred on the north and south sides of the site within chaparral and coastal age scrub vegetation. In Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 13 December 8, 1998 November of 1998 two male gnatcatchers were observed on site. During this site visit it could not be determined if these birds represented pairs or individuals. Based on the cumulative data pertaining to this site, it is assumed the site continues to support two gnatcatcher pairs within coastal sage scrub and chaparral areas. Sensitive Raptor Species Three sensitive raptor species were observed on the project site. One species, the northern hairier (Circus cyaneus) was observed nesting on site in the central portion of the site. In addition, a white-tailed kite (Elanus caeruleus) was observed foraging over the agricultural and grasslands portions of the site and a red-shouldered hawk (Buteo lineatus) was observed foraging within the chaparral portions of the site. Other raptors observed foraging over the site include the turkey vulture (Cathartes aura). 5.3.2 Sensitive Wildlife Species Potentially Occurring and Not Observed On Site Sensitive wildlife species that occur in the region and were not detected on the Roesch site are listed in Table HI. 5.4 Biological Linkages and Regional Context The Roesch site is immediately adjacent to natural open space resources located to the north (associated with the Marbrisa site) and to the west (associated with the Sambi and Mariano properties) of the site. To the east and south, the Roesch site is adjacent to graded areas associated with the roadway and residential development. The natural open space areas adjacent to and within the boundaries of the Roesch site are part of Biological Linkage Area F of the City of Carlsbad HMP. Linkage Area F provides a biological connection between Core Area 6 and Core Area 4. Habitats on the western and northern portions of the Roesch site, especially coastal sage scrub and southern maritime chaparral areas, provide "stepping stones" or distinct habitat patches that when combined with other patches form a regional linkage system. In addition, these habitats provide refuge, forage, and dispersal areas for general and sensitive biological resources within this region. 6.0 IMPACTS OF THE PROPOSED PROJECT The following section summarizes the expected impacts of the proposed project on biological resources and interprets these impacts within the regional context. Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 14 December 8, 1998 6.1 IMPACTS TO VEGETATION COMMUNITIES Proposed development on the Roesch site would result in grading and construction near the southeast corner of the site contiguous with ongoing grading and construction on the Ocean Bluff site. Construction of the proposed Roesch project would result in the development of approximately 6.61 acres, or approximately 23 percent, of the site. The remainder of the site would be preserved in perpetuity and natural open space. The preserved habitats, approximately 20 acres supporting 15 different vegetation communities, provides a diversity of vegetation types, wildlife resources, and refuge for at least one sensitive wildlife species. Moreover, the preserved areas are contiguous with a Linkage Area F and contribute to regional habitat value of this area As listed in Table IV, implementation of the proposed project would result in the direct removal of annual grasslands (4.98 acres), eucalyptus woodlands (0.01 acres), ruderal (0.28 acres), southern maritime chaparral (1.37 acres). Adverse effects associated with removal of annual grasslands, eucalyptus woodlands, and ruderal areas are not significant. Removal of 1.37 acres of southern maritime chaparral represents a loss of 33 percent of this habitat on site. The removal of this habitat occurs largely in the southern portion of the site and exceeds the HMP recommendation for impacts to this habitat type in Zone 20. The loss of southern maritime chaparral is adverse; however, is not significant within the context of the proposed project layout and surrounding development plans. Specifically, based on the continuity of preserved habitats with regional linkages, the ecological value of the preserved habitats exceed the value of the chaparral removed by development. This is especially true for the 10.8 acres of coastal sage scrub (100 percent of existing) and 4.16 acres of southern maritime chaparral (67 percent of existing), preserved on site. The preservation of these habitats on site offsets the loss of 1.37 acres of southern maritime chaparral. 6.2 IMPACTS TO SENSITIVE SPECIES The proposed project would not result in direct impacts to any species listed as threatened or endangered by the USFWS or CDFG. Several sensitive, but not threatened or endangered, plant species would be directly affected by development of the proposed project and one sensitive federally threatened wildlife species, the coastal California gnatcatcher would be indirectly affected by implementation of this project. Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 15 December 8,1998 TABLE IV IMPACTS TO VEGETATION COMMUNITIES VEGETATION COMMUNITY Annual Grasslands Agricultural Coyote Bush Scrub CSS - Artemisia californica CSS - Salvia mellifera CSS - Rhus integrifolia CSS - Mixed CSS - Disturbed Southern Maritime Chaparral Fresh Water Seep Graded Mulefat Scrub Native Grasslands Ruderal Southern Willow Scrub Eucalyptus Woodland Developed TOTAL MAP SYMBOL AGL AGR CBS CSS-A CSS-S CSS-R CSS-M CSS-D SMaC FWS GR MFS NGL RUD SWS EW DEV — ACRES REMOVED 0 4.98 0 0 0.0 0 0 0 1.37 0 0 0 0 0.26 0 0.01 0 6.62 ACRES PRESERVED 4.26 0.04 0.18 3.6 3.2 1.61 1.7 0.7 2.79 0.15 0.31 0.5 0.45 0.64 0.45 0 0.42 21 TOTAL ACRES 4.26 5.02 0.18 3.6 3.2 1.61 1.7 0.7 4.16 0.15 0.31 0.5 0.45 0.9 0.45 0.01 0.42 27.62 6.2.1 Impacts to Sensitive Vegetation Communities and Sensitive Plants As previously described the existing southern maritime chaparral is a sensitive vegetation community supports several sensitive plant species. Sensitive plants within this habitat include Nuttall's scrub oak, wart-stemmed ceanothus, and western dichondra. The removal of 1.37 acres of southern maritime chaparral including individuals of the above-mentioned species would be offset by the preservation of this southern maritime chaparral on site (see Section 6.1). Biological Resources Assessment Roesch Site, City of Carlsbad, California 16 Natural Resource Consultants Decembers, 1998 6.2.2 Impacts to Sensitive Wildlife The Roesch project would result in direct impacts to raptor nesting and foraging habitat and would result in indirect impacts to at least two pairs of coastal California gnatcatchers. The Roesch site will preserve approximately 20 acres of natural open space that can be used as raptor foraging and nesting habitat, as well as foraging and breeding habitat for the coastal California gnatcatcher. Again, the biological value of the preserved areas to wildlife species is enhanced by the connectivity of these habitats to a regional corridor system. The adverse impacts to raptor foraging areas and indirect effects of development on the coastal California gnatcatcher would be offset by the preservation of 76 percent of the site as natural open space. Raptor Foraging Habitat/Nesting Raptors Several raptor species have been identified foraging on the site and one raptor species was identified nesting on site. These species include the white-tailed kite, red-shouldered hawk, and northern harrier. In addition, the site supported at least one active raptor nest (a northern harrier) in 1998. These raptors are identified as sensitive species by the USFWS or CDFG. Implementation of the proposed project would remove approximately 6.62 acres of foraging habitat for these species. The reduction in foraging habitat will require that nesting birds travel further from the woodlands to procure food and reduces the value of the woodlands for nesting. The reduction in foraging habitat and overall use of the site by raptor species would be offset by preservation of 76 percent of the site as natural open space. In addition to removal of foraging habitat, nesting raptors are protected under the federal Migratory Bird Treaty Act. Habitat disturbances (i.e. grading, clearing, or discing) within 200- feet of an active raptor nest would be a significant adverse impact. Project mitigation measures (i.e. nesting raptor surveys conducted prior to grading) will ensure no nesting raptors are adversely effected by development (see Section 7.1). Indirect Impacts to the Coastal California Gnatcatcher The western portions of the Roesch site support the coastal California gnatcatcher. Proposed development will not preclude the use of the preserved open space areas for foraging, breeding, and nesting by this species. The connections between the preserved portions of the Roesch site and Linkage Area F provides the opportunity for gnatcatcher breeding on site and dispersal of juveniles to adjacent habitat areas. Adverse indirect effects of the project are not significant. Project mitigation measures (i.e. gnatcatcher surveys conducted prior to grading) will ensure no nesting gnatcatchers are adversely effected by development (see Section 7.1). Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 17 December 8,1998 6.3 OTHER POTENTIAL IMPACTS Jurisdictional Wetlands Implementation of the proposed project would not result in direct removal of lands that may be under the jurisdiction of the ACOE according Section 404 of the Clean Water Act and Section 1600 of the California Department of Fish and Game Code. MITIGATION MEASURES The Roesch project may result in adverse impacts to 1) sensitive plants species (currently none have been detected), 2) raptor nesting habitat, and 3) indirect impacts to the coastal California gnatcatcher. To offset these impacts the project includes the following mitigation measures. These measures would reduce all impacts to a level that is less than significant except for impacts to raptor foraging area that remains significant after mitigation. 7.1 SENSITIVE PLANTS, NESTING RAPTORS, CALIFORNIA GNATCATCHERS 1. Prior to any grading or vegetation clearing, a directed survey shall be conducted to locate sensitive plant species (if any). If any plant species listed as threatened or endangered by the USFWS or CDFG are discovered on site, these plants will be relocated into preserved open space areas of the site prior to grading or removal of habitat. If sensitive plants occur on site and would not be removed by proposed grading, these plants will be preserved in place. 2. Prior to any grading or vegetation clearing, a directed survey shall be conducted to locate active raptor nest (if any). If active raptor nests are present, no grading or removal of habitat will take place within 200 feet of active nesting sites during the nesting/breeding season (mid-February through mid-July). 3. Prior to any grading or vegetation clearing, a directed survey shall be conducted to locate active gnatcatcher nests (if any). If active gnatcatcher nests are present, no grading or removal of habitat will take place within 200 feet of active nesting sites during the nesting/breeding season (mid-February through mid-July). Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 18 December 8, 1998 7.2 LEVEL OF SIGNIFICANCE AFTER MITIGATION The Roesch project mitigates all expected impacts to biological resources to a level that is less than significant. 8,0 REFERENCES CITED Ashton, R.E., Jr. 1976. Endangered and Threatened Amphibians and Reptiles in the United States. Soc. for the Study of Amphibians and Reptiles. Atwood, J.L. 1990. Status Review of the California Gnatcatcher (Polioptila californica). Unpublished Technical Report, Manomet Bird Observatory, Manomet, Massachusetts.. Bramlet, David, and John Gray. 1991. Species of Special Interest Natural Resources Geographic Information System (GIS) Project Prepared for the County of Orange Environmental Management Agency, Santa Ana, California. August 1991. California Department of Fish and Game. 1988. Annual Report on the Status of California State Listed Threatened and Endangered Plants and Animals. California Department of Fish and Game. 1989. 1988 Annual Report on the Status of California's State Listed Threatened and Endangered Plants and Animals. California Department of Fish and Game. 1990b. Special Animals. California Natural Diversity Data Base. April 1990. California Department of Fish and Game. 1991b. State and Federal Endangered and Threatened Animals of California. Revised April 1991. Jack Henthorn & Associates. 1998. Personal Communication pertainiong to the Draft Carlsbad HMP. Habitat Management Plan for Natural Communities in th City of Carlsbad (Carlsbad HMP). Draft prepared by the City of Carlsbad dated December 1, 1997. Planning Systems. 1997. Vegetation Resources Assessment for Roesch Propert APN #15-070- 15 Carlsbad, California. Prepared for Jim Hicks. Biological Resources Assessment Natural Resource Consultants Roesch Site, City of Carlsbad, California 19 December 8,1998 FLORAL COMPENDIA Roesch Property, Carlsbad (data collected by N. J. Hancock 3/13/98 and 3/23/98) Scientific Name Plant identified by N. J. Hancock (Names based on Hickman, 1993) Common Name Community Status PTERIDOPHYTA: FERNS AND FERN ALLIES SELAGINELLACEAE — SPIKE-MOSS FAMILY Selaginella cinerascens ashy spike-moss PTERIDACEAE — BRAKE FAMILY Pentagramma triangularis ssp. triangularis goldenback fern Pentagramma triangularis ssp. viscosa silverback fern ANGIOSPERMAE: DICOTYLEDONES AIZOACEAE — FIG-MARIGOLD FAMILY Carpobrotus edulis hottentot-fig "Carpobrotus sp. fig-marigold ANACARDIACEAE — SUMAC FAMILY Malosma laurina Rhus integrifolia APIACEAE — CARROT FAMILY Apiastrum angustifolium Conium maculatum Daucus pusillus Foeniculum vulgare Sanicula arguta Sanicula crassicaulis laurel sumac lemonadeberry wild celery poison hemlock rattlesnake weed sweet fennel sharp-tooth sanicle Pacific sanicle ASTERACEAE — SUNFLOWER FAMILY Ambrosia psilostachya Artemisia califomica Baccharis pilularis Baccharis salicifolia Carduus tenuiflorus Centaurea melitensis *? Chaenactis sp. leaves Chamomila suaveolens Conyza bonariensis *Conyza sp. leaves Cotula australis Encelia califomica Eriophyllum confertiflorum Filago gallica chicory leaves—probably two species Galinsoga parviflora var. parviflora Gnaphalium bicolor Gnaphalium californicum *Grindelia sp. Hazardia squarrosa var. grindelioides *? Hemizonia sp. Heterotheca grandiflora western ragweed California sagebrush coyote bush mule fat cate tocalote pincushion pineapple-weed flax-leaved horseweed horseweed Australian brass-buttons California bush sunflower golden yarrow narrow-leaved filago small-flowered galinsoga bicolored cudweed California everlasting gumplant sawtooth goldenbush tarweed telegraph weed SMaC 4 CSS-S N CSS-S N SWS I SMaC I CSS-M, SMaC N CSS-R, SMaC N SMaC N MFS, SWS I CSS N CSS-D I AGL, CSS-S N CSS-S N SWS N CSS N CBS, MFS, CSS-M N MFS N AGR I AGR, RUD I SMaC N AGR I AGR I AGR N AGR, CSS, SMaC I CSS N SMaC N SMaC, CSS I AGR N AGR I SMaC, CSS N CSS-S, SWS N NGL, CSS N CSS-S N SMaC N AGR N Scientific Name Common Name Hypochaeris glabra smooth cat's-ear *Lactuca sp. wild lettuce Lasthenia califomica common goldfields Lessingia filaginifolia cudweed aster Senecio vulgaris common groundsel Silybum marianum milk thistle Sonchus asper prickly sow-thistle Sonchus oleraceus common sow-thistle Stylocline gnaphaloides everlasting nest-straw BORAGINACEAE — BORAGE FAMILY Amsinckia menziesii common fiddleneck Cryptantha intermedia common forget-me-not Pectocarya linearis ssp. ferocula slender pectocarya Plagiobothrys sp. popcorn flower BRASSICACEAE — MUSTARD FAMILY Brassicajuncea Indian mustard Brassica nigra black mustard Brassica rapa field mustard Coronopus didymus lesser wart-cress Lepidium nitidum shining peppergrass Lepidium virginicum var. pubescens wild peppergrass Raphanus raphanistrum jointed charlock Raphanus sativus wild radish Sisymbrium irio London rocket Sisymbrium orientale hare's-ear cabbage CACTACEAE — CACTUS FAMILY Opuntia ficus-indica Indian fig Opuntia littoralis coast prickly-pear Opuntia oricola pancake prickly-pear CAPRIFOLIACEAE — HONEYSUCKLE FAMILY Lonicera subspicata var. denudata southern honeysuckle Sambucus mexicana Mexican elderberry CARYOPHYLLACEAE — PINK FAMILY Cardionema ramosissimum sand mat Cerastium glomeratum mouse-ear chickweed Silene gallica windmill pink Spergula arvensis spurrey, starwort Spergularia bocconii Boccone's sand-spurry Spergularia villosa villous sand-spurry Stellaria media common chickweed CHENOPODIACEAE — GOOSEFOOT FAMILY Atriplex semibaccata Australian saltbush Chenopodium album . lamb's quarters Chenopodium murale nettle-leaved goosefoot Salsola tragus Russian thistle Community AGR, AGL, CSS, SMaC AGR, RUD DEV SMaC AGR, CSS SWS CSS-A, CBS AGR, RUD SMaC AGR, RUD SMaC CSS SMaC AGR AGR, RUD, CBS AGR AGR CSS SMaC AGR AGR, RUD AGR, RUD, SWS AGR RUD CSS SMaC CSS CSS-M, SMaC SMaC CSS-S AGR, SMaC AGR DEV SMaC, DEV CSS-S SMaC RUD CBS, CSS-S AGR Status I N N N I I I I N N N N N I I I I N N I I I I I N N N N N I I I I I I I I I I Scientific Name Common Name CISTACEAE — ROCK-ROSE FAMILY Helianthemum scoparium peak rush-rose CONVOLVULACEAE — MORNING GLORY FAMILY Dichondra occidentalis western dichondra CRASSULACEAE — STONECROP FAMILY Crassula connata pygmy-weed Dudleya lanceolata lance-leaved dudleya CUCURBITACEAE — GOURD FAMILY Marah macrocarpus manroot, wild cucumber CUSCUTACEAE — DODDER FAMILY Cuscuta sp. dodder ERICACEAE — HEATH FAMILY Xylococcus bicolor mission manzanita EUPHORBI ACE AE — SPURGE FAMILY Ricinus communis castor bean FABACEAE — PEA FAMILY Lotus salsuginosus alkali lotus Lotus scoparius deerweed Lotus strigosus strigose lotus Lupinus bicolor miniature lupine Medicago polymorpha bur-clover Melilotus indica yellow sweet-clover FAGACEAE — OAK FAMILY Quercus agrifolia coast live oak Quercus dumosa NuttalPs scrub oak GERANIACEAE — GERANIUM FAMILY Erodium botrys long-beaked filaree Erodium cicutarium red-stemmed filaree Erodium moschatum white-stemmed filaree Geranium retrorsum New Zealand geranium GROSSULARIACEAE — GOOSEBERRY FAMILY Ribes speciosum fuchsia-flowered gooseberry HYDROPHYLLACEAE — WATERLEAF FAMILY Eriodictyon crassifolium thickleaf yerba santa Eucrypta chrysanthemifolia common eucrypta LAMIACEAE — MINT FAMILY Salvia columbariae chia Salvia mellifera black sage Stachys ajugoides var. rigida hedge-nettle MALVACEAE — MALLOW FAMILY Malacothamnus fasciculatus mesa bush-mallow Malva parviflora cheeseweed Sidalcea malvaeflora checker bloom MYRTACEAE — MYRTLE FAMILY Eucalyptus sp. eucalyptus Community SMaC, CSS-A SMaC SMaC SMaC SMaC, CSS-R CSS SMaC SWS SMaC CSS, SMaC AGR AGR, AGL AGR AGR,RUD CSS-M SMaC CSS,NGL AGR,RUD,NGL AGR,RUD FWS, CBS CSS-S, CBS SMaC, CSS-D CSS-R, SMaC CSS-A CSS, SMaC NGL, CSS-S SMaC, CSS AGR,RUD NGL, FWS AGR,EW Status N C3c,4 N N N N N I N N N N I I N C2, IB I I I I N N N N N N N I N I NYCTAGINACEAE — FOUR O'CLOCK FAMILY Scientific Name Common Name Community Status Mirabilis californica wishbone bush ONAGRACEAE — EVENING PRIMROSE FAMILY Camissonia bistorta California suncup Camissonia intermedia intermediate primrose OXALIDACEAE — WOOD-SORREL FAMILY Oxalis albicans California wood-sorrel Oxalis pes-caprae Bermuda buttercup PLANTAGINACEAE — PLANTAIN FAMILY Plantago erecta California plantain POLEMONIACEAE — PHLOX FAMILY Linanthus dianthiflorus ground pink *? Navarretia hamata skunkweed POLYGONACEAE — BUCKWHEAT FAMILY Eriogonum fasciculatum flat-top buckwheat Pterostegia drymarioides granny's hairnet Rumex crispus curly dock PORTULACACEAE — PURSLANE FAMILY Calandrinia ciliata red maids Claytonia perfoliata miner's lettuce PRIMULACEAE — PRIMROSE FAMILY Anagallis arvensis scarlet pimpernel Dodecatheon clevelandii Padres' shooting star RHAMNACEAE — BUCKTHORN FAMILY Ceanothus tomentosus var. olivaceus Ceanothus verrucosus Rhamnus crocea ROSACEAE — ROSE FAMILY Adenostoma fasciculatum Heteromeles arbutifolia Ramona lilac white coast Ceanothus, wart- stemmed lilac redberry chamise toyon narrow-leaved bedstraw San Diego bedstraw RUBIACEAE — MADDER FAMILY Galium angustifolium Galium nuttallii SALICACEAE — WILLOW FAMILY Salix lasiolepis arroyo willow SAXIFRAGACEAE — SAXIFRAGE FAMILY Jepsonia parryi mesa saxifrage SCROPHULARIACEAE — FIGWORT FAMILY Antirrhinum nuttallianum Nuttall's snapdragon Castilleja exserta purple owl's-clover Linaria canadensis blue toadflax Mimulus aurantiacus bush monkey-flower SOLANACEAE — NIGHTSHADE FAMILY Nicotiana glauca tree tobacco Solanum douglasii Douglas' nightshade Solanum parishii Parish's nightshade CSS N SMaC, CSS N SMaC N CSS-S N SWS, RUD I CSS, SMaC N CSS N CSS N CSS, SMaC N CSS-S N AGR, CBS I SMaC, AGR N CSS-R, SMaC N SMaC, AGR I NGL, CSS N SMaC N SMaC C2,2 SMaC N SMaC N CSS-M, SMaC, N CSS-S CSS-S N CSS-S N SWS N CSS-S N SMaC N CSS-A N CSS-A, SMaC N SMaC, CSS-S N SWS 1 CSS-S N CSS N Scientific Name Common Name TROPAEOLACEAE — NASTURTIUM FAMILY Tropaeolum majus garden nasturtium URTICACEAE — NETTLE FAMILY Urtica urens dwarf nettle ANGIOSPERMAE: MONOCOTYLEDONES CYPERACEAE — SEDGE FAMILY Eleocharis macrostachya pale spike-rush IRIDACEAE — IRIS FAMILY Sisyrinchium bellum blue-eyed grass JUNCACEAE — RUSH FAMILY Juncus rugulosus wrinkled rush Juncus spp. rushes LILIACEAE — LILY FAMILY *? Chlorogalum sp. soap-plant Dichelostemma capitatum blue dicks, wild hyacinth *h'ly-family leaves ? Yucca schidigera Mojave yucca POACEAE — GRASS FAMILY A vena spp, wild oats Bromus diandrus ripgut grass Bromus hordaceus soft chess Bromus madritensis ssp. rubens foxtail chess Cortaderia sp. pampas grass Hordeum spp. barley Lamarckia aurea goldentop Leymus condensatus giant wild rye Muhlenbergia rigens deergrass Nasella pulchra purple needlegrass LEGEND * = Too early in season to determine species Community SMaC = Southern maritime chaparral CSS = Coastal sage scrub — all types CSS-R = Coastal sage scrub — lemonadeberry (Rhus integrifolia) CSS-S = Coastal sage scrub — black sage (Salvia melliferd) Community RUD CSS-A FWS NGL, FWS FWS FWS CSS, SMaC CSS, SMaC NGL SMaC AGR, AGL, NGL AGR, RUD, MFS AGR AGR, AGL, NGL CSS AGR, AGL AGR, SMaC CSS-R, SWS, FWS SMaC NGL, SMaC Status I I N N N N N N N N I I I I I I I N N N CSS-A = Coastal sage scrub — California sagebrush (Artemisia califomica) CSS-M = Coastal sage scrub — mixed dominance CSS-D = Coastal sage scrub — disturbed CBS = Coyote brush (Baccharis pilularis) scrub SWS = Southern willow scrub MFS = Mulefat scrub EW = Eucalyptus woodland AGL = Annual grassland NGL = Native grassland FWS = Freshwater seep LEGEND (cont) RUD = Ruderal AGR = Agricultural DEV = Developed (dirt roads) Status C2 = Threat and/or distribution data are insufficient to support federal listing C3c = Too widespread for federal listing and/or not threatened IB = CNPS list: plants rare, threatened or endangered throughout their range 2 = CNPS list: plants rare, threatened or endangered in California; commoner elsewhere 4 = CNPS list: plants of limited distribution N = Native species I = Species introduced at this locality FAUNAL COMPENDIA TERRESTRIAL VERTEBRATES REPTILES IGUANTOAE - IGUANID LIZARDS Sceloporus occidentalis western fence lizard Ufa stansburiana side-blotched lizard BIRDS CATHARTTOAE - NEW WORLD VULTURES Cathartes aura turkey vulture ACOPITRIDAE - HAWKS Circus cyaneus northern harrier (nesting) Buteo lineatus red-shouldered hawk PHASIANIDAE - PHEASANTS & QUAILS Callipepla calif arnica California quail COLUMBIDAE - PIGEONS & DOVES Zenaida macroura mourning dove CUCULH)AE - CUCKOOS & ROADRUNNERS Geococcyx californianus greater roadrunner TROCHILIDAE - HUMMINGBIRDS Calypte anna Anna's hummingbird TYRANNTOAE - TYRANT FLYCATCHERS Sayornis nigricans black phoebe Myiarchus cinerascens ash-throated flycatcher Tyrannus verticalis western kingbird CORVIDAE - JAYS & CROWS Aphelocoma coerulescens scrub jay Corvus brachyrhynchos American crow Corvus corax common raven AEGITHALroAE - BUSHTTTS Psaltriparus minimus bushtit TROGLODYTTOAE - WRENS Thryomanes bewickii Bewick's wren MUSCICAPIDAE - KINGLETS, GNATCATCHERS, THRUSHES & BABBLERS Polioptila califomica California gnatcatcher (nesting) Chamaeafasciata wrentit MIMIDAE - THRASHERS Toxostoma redivivum California thrasher LANHDAE - SHRIKES Lanius ludovicianus loggerhead shrike STURNTOAE - STARLINGS * Sturnus vulgaris European starling EMBERIZIDAE - WOOD WARBLERS, TANAGERS, BUNTINGS & BLACKBIRDS Geothlypis trichas common yellowthroat Dendroica coronata yellow-rumped warbler Pipilo crissalis California towhee Pipilo erythrophthalmus rufous-sided towhee Melospiza melodia song sparrow Sturnella neglecta western meadowlark Euphagus cyanocephalus Brewer's blackbird FRINGILLIDAE - FINCHES Carduelis psaltria lesser goldfinch MAMMALS LEPORIDAE - HARES & RABBITS Sylvilagus audubonii desert cottontail SCIURIDAE - SQUIRRELS Spermophilus beecheyi California ground squirrel GEOMYIDAE - POCKET GOPHERS Thomomys bottae Botta's pocket gopher MURIDAE - MICE, RATS, AND VOLES Peromyscus maniculatus deer mouse Neotoma sp. (Lepida orfuscipes) desert or dusky-footed woodrat (nests)