HomeMy WebLinkAboutCT 97-15; Lohf Property; Tentative Map (CT) (11)I
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^ \ BIOLOGICAL RESOURCES REPORT
?V AND IMPACT ANALYSIS
FOR THE DOVE LANE PROPERTY
• CITY OF CARLSBAD
" SAN DIEGO COUNTY, CALIFORNIA
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• Prepared for:
_ WESTERN PACIFIC HOUSING
I 2385 Camino Vida Roble, Suite 107
Carlsbad, CA 92009
Contact: Scot Sandstrom
(760) 929-1600
Prepared by:
DUDEK & ASSOCIATES, INC.
605 Third Street
Encinitas, California 92024
• Contact: Anita M. Hay worth, Ph.D.
(760) 942-5147
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* 5 September 1997
Revised 5 May 1998
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TABLE OF CONTENTS
Section Page
SUMMARY OF PROJECT FINDINGS iv
1.0 INTRODUCTION 1
2.0 METHODS AND SURVEY LIMITATIONS 1
2.1 Literature Review 1
2.2 Field Reconnaissance 1
2.2.1 Resource Mapping 1
2.2.2 Flora 2
2.2.3 Fauna 2
2.2.4 Sensitive Biological Resources 2
3.0 PHYSICAL CHARACTERISTICS 3
3.1 Site Description 3
4.0 RESULTS 6
4.1 Botany - Plant Communities and Floral Diversity 6
4.1.1 Southern Mixed Chaparral 6
4.1.2 Southern Maritime Chaparral 6
4.1.3 Southern Coast Live Oak Riparian Forest 8
4.1.4 Eucalyptus Woodland 9
4.1.5 Disturbed/Developed Habitat 9
4.1.6 Floral Diversity 9
4.2 Zoology - Wildlife Diversity 9
4.2.1 Birds 9
4.2.2 Reptiles and Amphibians 10
4.2.3 Mammals 10
4.3 Sensitive Biological Resources 10
4.3.1 Sensitive Plant Species 10
4.3.2 Sensitive Wildlife Species 13
4.3.3 Sensitive Habitats 15
4.3.4 Wildlife Corridors and Habitat Linkages 15
4.4 Regional Resource Planning Context 15
5.0 ANTICIPATED PROJECT IMPACTS 16
5.1 Explanation of Determination of Significance 18
5.2 Impacts to Plant Communities 18
5.3 Impacts to Sensitive Plant Species 20
5.4 Impacts to Sensitive Animal Species 20
5.5 Summary of Significant Direct and Indirect Impacts 21
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TABLE OF CONTENTS (continued)
Section Page
6.0 RECOMMENDED MITIGATION MEASURES 21
6.1 Subregional Planning Context 21
6.2 Mitigation Measures 22
7.0 ACKNOWLEDGMENTS 22
8.0 LITERATURE CITED 22
LIST OF FIGURES
Figure 1 Regional Map 4
Figure 2 Vicinity Map 5
Figure 3 Biological Resources Map 7
Figure 4 Biological Resources Map With Proposed Grading 17
LIST OF TABLES
Table 1 Acreages by Habitat Type 6
Table 2 Impact and Open Space Acreage for the Dove Lane Property 19
LIST OF APPENDICES
A. Vascular Plant Species Observed on the Project Site
B. Wildlife Species Observed or Detected on the Project Site
C. Species Sensitivity Categories
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Biology Report for the Dove Lane Property
SUMMARY OF FINDINGS
The Dove Lane property is an approximately 36.6-acre parcel situated within Zone 21 of the
City of Carlsbad in the western portion of San Diego County, California. The property is
located west of El Camino Real, south of Camino Vida Roble, east of the Aviara development
and north of Aviara Parkway. The property is surrounded by agriculture, open space/native
habitat and some areas of residential development. Topographically, most of the site is relatively
flat and has been in agricultural/greenhouse use and contains three residences. The elevations
onsite vary from about 160 to 300 feet above mean sea level. Most of the southwestern portion
of the site is represented by slopes leading to two drainages containing oak riparian habitat. The
slopes within the southwestern corner are primarily composed of chaparral vegetation and most
of the area surrounding the property is also chaparral. Based on species composition and general
physiognomy, five plant communities or habitat types were identified onsite: southern mixed
chaparral (1.2 acres), southern maritime chaparral (5.9 acres), southern coast live oak riparian
forest (0.4 acres), eucalyptus woodland (0.5 acres), and disturbed/developed habitat (28.6 acres).
One species of plant listed as endangered by the California Department of Fish and Game
(CDFG) and proposed for listing as endangered by the U.S. Fish and Wildlife Service (USFWS)
was detected onsite: Del Mar manzanita (Arctostaphylos glandulosa ssp. crassifolid). Four
additional plant species considered sensitive by various resource agencies also were observed:
summer-holly (Comarostaphylis diversifolia), Nuttall's scrub oak (Quercus dumosa), and ashy
spike-moss (Selaginella cinerascens). An isolated coast live oak (Quercus agrifolid) is located
in the central portion of the property, separate from the southern coast live oak riparian forest.
One animal species listed as rare, threatened, or endangered by the USFWS or CDFG was
observed onsite: California gnatcatcher (Polioptila californicd). No other species formerly
recognized as a Category 2 candidates for listing by the USFWS or recognized as sensitive by
resource agencies were observed. No animal species listed as rare, threatened, or endangered
by the USFWS or CDFG were observed onsite.
The vast majority of the site supports disturbed/developed habitat which would not be considered
sensitive by the resource agencies. However, native communities onsite, including southern
maritime chaparral and coast live oak riparian forest, are considered sensitive.
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Biology Report for the Dove Lane Property
1.0 INTRODUCTION
The Dove Lane property is an approximately 36.6-acre parcel situated within Zone 21 of the
City of Carlsbad in the western portion of San Diego County, California. The property is
located west of El Camino Real, south of Camino Vida Roble, east of the Aviara development
and north of Aviara Parkway. The property is surrounded by agriculture, open space/native
habitat and some areas of residential development. Biological surveys of the property were
conducted in August, 1997, to assess the existing conditions of the biological resources. The
surveys augmented the existing data base accumulated through previous survey work (e.g.,
SANDAG 1994). The purposes of this report are to describe the biological character of the site
in terms of vegetation, flora, wildlife, and wildlife habitats; and analyze the biological
significance of the site in view of federal, state, and local laws and policies.
2.0 METHODS AND SURVEY LIMITATIONS
Data regarding biological resources present on the project site were obtained through a review
of pertinent literature and through field reconnaissance; both are described in detail below.
2.1 LITERATURE REVIEW
Sensitive biological resources present or potentially present onsite were identified through a
literature search using the following sources: U.S. Fish and Wildlife Service (1989, 1990,1991,
1993), California Department of Fish and Game (1980, 1986, 1987), California Native Plant
Society's Inventory of Rare and Endangered Vascular Plants (Skinner and Pavlik 1994), Murphy
(1990), and the vegetation and sensitive species mapping performed for the North County
Wildlife Forum's Multiple Habitat Conservation Program (SANDAG 1994). General information
regarding wildlife species present hi the region was obtained from Unitt (1984) for birds, Bond
(1977) for mammals, and Stebbins (1985) for reptiles and amphibians.
2.2 FIELD RECONNAISSANCE
Biological surveys of the property were conducted by Dudek and Associates, Inc., biologist
Anita M. Hayworth, Ph.D., during August, 1997. All surveys were conducted by foot; the
entire property was surveyed and inventoried for biotic components.
2.2.1 Resource Mapping
Plant communities were mapped in the field directly onto a clear acetate on a 200-scale
(1"=200') aerial photograph of the area from Aerial Fotobank, flown 18 January 1997.
Vegetation boundaries and locations of sensitive species were transferred onto a 200-scale
topographic map of the site from Hunsaker and Associates. To further verify the vegetation
mapping prepared in the field, a survey crew (Hunsaker and Associates) worked with the
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Biology Report for the Dove Lane Property
biologist to accurately identify the boundaries of the habitat using GPS. The GPS data points
were then transferred to GIS and overlain on the aerial photograph mapping. These boundaries
and locations were digitized by DUDEK GIS technician Martie demons using the ArcCadd
system at DUDEK.
Plant community classifications used in this report follow Holland (1986), with modifications
to accommodate the lack of conformity of the observed communities to those of Holland.
Locations of rare or sensitive plant and wildlife species also were mapped, and the numbers
present were estimated.
2.2.2 Flora
All plant species encountered during the field surveys were identified and recorded. Those
species that could not be identified immediately were brought into the laboratory for further
investigation. Latin and common names of plants follow the Jepson Manual (Hickman 1993).
Where not listed in Hickman (1993), common names are taken from Beauchamp (1986) or
Abrams (1923). A list of plant species observed on the property is presented in Appendix A.
2.2.3 Fauna
Wildlife species detected during field surveys by sight, calls, tracks, scat, or other sign were
recorded. Binoculars (10 x 50 power) were used to aid in the identification of observed animals.
Records from previous biological studies and accounts from local residents also were consulted.
In addition to species actually observed, expected wildlife use of the site was determined by
known habitat preferences of local species and knowledge of their relative distributions in the
area. A list of wildlife species observed or detected onsite is presented in Appendix B.
Latin and common names of animals follow Stebbins (1985) for reptiles and amphibians,
American Ornithologists' Union (1983, 1989) for birds, Jones et al. (1992) for mammals.
2.2.4 Sensitive Biological Resources
Sensitive biological resources are those defined as follows: (1) species that have been given
special recognition by federal, state, or local conservation agencies and organizations due to
limited, declining, or threatened population sizes; (2) species and habitat types recognized by
local and regional resource agencies as sensitive; (3) habitat areas or plant communities that are
unique, are of relatively limited distribution, or are of particular value to wildlife; and 4)
wildlife corridors and habitat linkages.
During the field surveys a special effort was made to examine more thoroughly those areas
suspected to support sensitive resources. Considerably more time was spent in the chaparral
vegetation and in drainages onsite. Assessment of the property to support the quino checkerspot
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Biology Report for the Dove Lane Property
butterfly (Euphydryas editha quino), a federally listed endangered species, were conducted
currently with the biological mapping and inventory of the property. Biological mapping and
species inventory were conducted by a biologist who possesses a valid section 10(a)(l)(A)
recovery permit for the California gnatcatcher (Polioptila californicd) and quino checkerspot
butterfly.
3.0 PHYSICAL CHARACTERISTICS
3.1 SITE DESCRIPTION
The Dove Lane property is a 36.6-acre property situated within Zone 21 of the City of Carlsbad
in western San Diego County, California (Figure 1). It is bordered to the south by the Aviara
residential development and open space, and to the north, west, and east by undeveloped areas,
most of which contain native vegetation. The property lies approximately 3 miles east of
Interstate Highway 5 and about 1.3 miles north of La Costa Avenue, and 0.2 mile west of El
Camino Real. It is in the northeastern corner of the USGS 7.5 minute Encinitas quadrangle,
Section 26, T.12S., R.4W. (Figure 2).
Topographically, most of the site is relatively flat, has been in agricultural/greenhouse use, and
contains three residences. The elevations onsite vary from about 160 to 300 feet above mean
sea level. Most of the southwestern portion of the site is represented by slopes leading to two
drainages containing oak riparian habitat. The slopes within the southwestern corner are
primarily composed of chaparral vegetation and most of the area surrounding the property is also
chaparral. Two drainages converge to form an unnamed tributary of Batiquitos Lagoon, and
traverse the southern half of the site in a roughly southwest direction. The drainage supports
somewhat well developed oak riparian forest that extends offsite to the southwest but terminates
at the Aviara Development.
According to Bowman (1973), the following soils are present onsite: Huerhuero loam (HrD2),
and Loamy alluvial land-Huerhuero complex (LvF3).
Soils of the Huerhuero series consist of moderately well drained loams that have a clay subsoil.
These soils developed in sandy marine sediments. Huerhuero loam (HrD2) occurs on 9 to 15
percent slopes. Because of moderate sheet erosion, the soil has an effective rooting depth of 20
to 40 inches. Loamy alluvial land consists of somewhat poorly drained, very deep, very dark
brown to black silt loams and sandy loams. Areas of this land were formerly wet meadows that
were subsequently drained by head cutting of gullies. The gullies eventually formed drainage
ditches and thus lowered the water table. The loamy alluvial land-Huerhuero complex occurs
on 9 to 50 percent slopes and occurs on old coastal ridges. The landscape is one of strongly
sloping to steep, severely eroded soils and alluvial fill along drainageways.
Orange
County
1" = 8 Miles
Tijuana
Dove Lane - Biological Resources Report & Impact Analysis
Regional Map
FIGURE
SOURCE: USGS 7.5 Minute Series, Encinitas Quadrangle = 2000'
Dove Lane • Biological Resources Report & Impact Analysis
Vicinity Map
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Biology Report for the Dove Lane Property
4.0 RESULTS OF SURVEY
4.1 BOTANY - PLANT COMMUNITIES AND FLORAL DIVERSITY
Based on species composition and general physiognomy, five plant communities or habitat types
were identified onsite: southern mixed chaparral (1.2 acres), southern maritime chaparral (5.9
acres), southern coast live oak riparian forest (0.4 acres), eucalyptus woodland (0.5 acres), and
disturbed/developed habitat (28.6 acres). These habitat types are described below, their acreages
are presented in Table 1, and their spatial distribution is presented in Figure 3.
TABLE 1
ACREAGES BY HABITAT TYPE
Southern Mixed Chaparral 1.2 acres
Southern Maritime Chaparral 5.9 acres
Southern Coast Live Oak Riparian Forest 0.4 acres
Eucalyptus Woodland 0.5 acres
Disturbed/developed Habitat 28.6 acres
TOTAL 36.6 acres
4.1.1 Southern Mixed Chaparral
Southern mixed chaparral is a drought- and fire-adapted community of woody shrubs, 1.5-3.0
meters tall, frequently forming dense, impenetrable stands. It develops primarily on mesic
north-facing slopes and in canyons, and is characterized by crown- or stump-sprouting species
that regenerate following burns or other ecological catastrophes. This association is typically
a mixture of chamise (Adenostoma fasciculatum), mission manzanita (Xylococcus bicolor),
ceanothus (Ceanothus sp.), Nuttall's scrub oak (Quercus dumosd), laurel sumac (Malosma
laurind), and black sage.
A small amount of southern mixed chaparral occurs onsite along the eastern, northern, and
western edges of the property. Much of the area mapped as southern mixed chaparral onsite is
dominated by chamise. There are also scattered individuals of mission manzanita, laurel sumac,
chamise, black sage (Salvia melliferd), and California sagebrush (Artemisia californicd). A total
of 1.2 acres of southern mixed chaparral is present onsite.
BASE TOPO/GRADING SOURCE: Hunsaker it Associates, 1998
Vegetation Types:
SMC Southern Maritime Chaparral
SMXI Southern Mixed Chaparral
ORF Coast Live Oak Riparian Forest
EW | Eucalyptus Woodland
Disturbed HabitatDH
Sensitive Animal Species:
CAGN California gnatcatcher
Sensitive Plant Species:
Ag Arctostaphylos glandulosa
Cd Comarostaphylis diversifolia
Qa Quercus agrifolia
Qd Quercus dumosa
NOTE: Numbers indicate individual plant
counts at that location.
200
Scale In Feet
Dove Lane • Biological Resources Report & Impact Analysis
Biological Resources Map
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Biology Report for the Dove Lane Property
4.1.2 Southern Maritime Chaparral
Southern maritime chaparral is similar to southern mixed chaparral but is restricted to coastal
localities within the fog belt and typically develops on sandstone soils. This community is
characterized by several shrubs of limited distribution, including Del Mar manzanita
(Arctostaphylos glandulosa var. crassifolia), wart-stemmed ceanothus (Ceanothus verrucosus),
coast spicebush (Cneoridium dumoswri), and Nuttall's scrub oak (Quercus dumosa). Other
shrubs encountered frequently in this community are chamise, lemonadeberry, laurel sumac,
toyon, and summer-holly. There is some question regarding the definition of this community,
and considerable disagreement exists among those who map plant communities. For purposes
of this study, any mixed chaparral community that had Del Mar manzanita as one of the shrub
components was included in this category. Patches of chaparral in which Nuttall's scrub oak
occurs, contained no other species characteristic of this community and did not occupy sandstone
soils; hence, these were considered southern mixed chaparral. Likewise, although scrub oak is
considered characteristic of southern maritime chaparral, the presence of scrub oak alone was
not considered diagnostic for this community.
Within the property, the full complement of southern maritime chaparral species is found in this
community. Southern maritime chaparral, 5.9 acres, has a limited distribution on the property;
it is restricted to the southwestern portion of the study area.
Southern maritime chaparral is recognized as a sensitive plant community owing to its limited
distribution and depleted nature. The U.S. Fish and Wildlife Service recently reviewed a
proposal to list as endangered six plant species characteristic of this community; among these,
Del Mar manzanita and Del Mar Mesa sand-aster were proposed as endangered.
4.1.3 Southern Coast Live Oak Riparian Forest
Southern coast live oak riparian forest is an open to locally dense evergreen sclerophyllous
riparian woodland dominated by coast live oak (Quercus agrifolid). According to Holland
(1986) it is richer in herbs and poorer in understory shrubs than other riparian communities.
It typically occurs in bottomlands and outer floodplains along larger streams, on fine grained,
rich alluvium.
Onsite this community is represented by two bands of coast live oak, a total of 0.4 acre, with
scattered individuals of arroyo willow, and an understory that includes poison-oak
(Toxicodendron diversilobum), California rose (Rosa califomicd), mugwort (Artemisia
douglasiana), and several annuals.
Riparian habitats such as southern coast live oak riparian forest and southern willow scrub
represent high quality wildlife habitat, providing structural diversity and water during much of
the year. They are important sites of primary productivity and play a vital role in nutrient
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Biology Report for the Dove Lane Property
recycling and maintenance of water quality. Many species of animals that are resident in
adjacent scrub habitat forage in riparian areas during the drier times of the year.
4.1.4 Eucalyptus Woodland
Although not recognized as a native plant community by Holland (1986), eucalyptus woodland
is a distinct vegetation type that is fairly widespread in southern California. It typically consists
of monotypic stands of introduced, Australian eucalyptus trees (Eucalyptus spp.). The
understory is either depauperate or lacking owing to shade and the possible allelopathic (toxic)
properties of the eucalyptus leaf litter. Although eucalyptus woodlands are of limited value to
most native plants and animals, they frequently provide nesting and perching sites for some local
raptors. Three stands of eucalyptus, totaling 0.5 acre, are located on the property.
4.1.5 Disturbed/Developed Habitat
Disturbed habitat refers to areas that lack vegetation entirely. These areas generally are the
result of severe or repeated mechanical perturbation. Developed land refers to areas that include
homes, yards, ornamental landscaping, corrals, and other highly modified lands that support
structures, land use, or vegetation associated with dwellings. Within the property,
disturbed/developed habitat includes dirt roads, trails, plowed land, residential dwellings and
outbuildings, and ornamental landscape. A total of 28.6 acres of disturbed/developed habitat
is present onsite.
4.1.6 Floral Diversity
A total of 67 species of vascular plants - 44 native species (66 percent) and 23 non-native (34
percent) - was recorded from the site (Appendix A).
4.2 ZOOLOGY - WILDLIFE DIVERSITY
4.2.1 Birds
Twenty-two (22) species of birds were observed during the recent survey work (see Appendix
B). The avifauna is comprised of a moderately diverse assemblage of species associated with
coastal sage scrub and chaparral. The most commonly observed species include California quail
(Callipepla californicd), mourning dove (Zenaida macrourd), Anna's hummingbird (Calypte
anna}, common raven (Corvus corax), wrentit (Chamaea fasciatd), California thrasher
(Toxostoma redivivuni), rufous-sided towhee (Pipilo erythrophthalmus), and California towhee
(Pipilo crissalis).
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Biology Report for the Dove Lane Property
4.2.2 Reptiles and Amphibians
Two species of reptiles were observed onsite, including side-blotched lizard (Uta stansburiand)
and Great Basin fence lizard (Sceloporus occidentalis). Other reptiles common in the area and
likely to occur onsite include southern alligator lizard (Gerrhonotus multicarinatus webbii),
coastal western whiptail (Cnemidophorus tigris multiscutatus), San Diego horned lizard
(Phrynosoma coronata blainvillei), orange-throated whiptail (Cnemidophorus hyperythrus),
gopher snake (Pituophis melanoleucus), northern red-diamond rattlesnake (Crotalus ruber rubef),
and common kingsnake (Lampropeltis getulus). No amphibians were observed onsite.
4.2.3 Mammals
Four species of mammals were recorded from the site, including cottontail rabbit (Sylvilagus
sp.), California ground squirrel (Spermophilus beecheyi), woodrat (Neotoma sp.), coyote (Canis
latrans). Other mammal species likely to be present include striped skunk (Mephitis mephitis),
Virginia opossum (Didelphis virginicd), and raccoon (Procyon lotor).
4.3 SENSITIVE BIOLOGICAL RESOURCES
The following resources are discussed in this section: (1) plant and animal species present in
the project vicinity that are given special recognition by federal, state, or local conservation
agencies and organizations owing to declining, limited, or threatened populations, that are the
results, in most cases, of habitat reduction; and (2) habitat areas that are unique, are of relatively
limited distribution, or are of particular value to wildlife. Sources used for determination of
sensitive biological resources are as follows: wildlife — U.S. Fish and Wildlife Service
(USFWS 1989, 1991), California Department of Fish and Game (CDFG 1980, 1986), Remsen
(1978), Everett (1979), McGurty (1980), and Murphy (1990); plants - USFWS (1990, 1993),
CDFG (1987), and Skinner and Pavlik (1994); and habitats ~ Holland (1986).
4.3.1 Sensitive Plant Species
One species of plant listed as endangered by the California Department of Fish and Game
(CDFG) and proposed for listing as endangered by the U.S. Fish and Wildlife Service (USFWS)
was detected onsite: Del Mar manzanita (Arctostaphylos glandulosa ssp. crassifolid). Four
additional plant species considered sensitive by various resource agencies also were observed:
summer-holly (Comarostaphylis diversifolid), Nuttall's scrub oak (Quercus dumosd), and ashy
spike-moss (Selaginella cinerascens}. One regionally sensitive plant species, coast live oak
(Quercus agrifolia), was observed outside of the area mapped as southern coast live oak riparian
forest and within the disturbed habitat area in the central portion of the property. Although this
species is not listed by the resource agencies as sensitive, it is considered of concern with the
jurisdictions. These species are discussed below and their locations are illustrated in the
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Biology Report for the Dove Lane Property
biological resources map (Figure 3). The listing authorities and explanation of listing categories
are presented in Appendix C. Although the USFWS recently eliminated its Category 2 candidate
(C2) status, these are retained below because C2 species currently are under further review.
Arctostaphylos glandulosa ssp. crassifolia - Del Mar manzanita
USFWS: Endangered
CDFG: None
CNPS: List IB, 3-3-2
Del Mar manzanita represents the coastal form of San Diego County's common burl-forming
manzanita, and it is one of several sensitive plants that are indicators of the unique and depleted
southern maritime chaparral habitat. In his recent treatment of Arctostaphylos in the Jepson
Manual (Hickman 1993), Wells considers ssp. crassifolia as a valid taxon representing those
populations in coastal San Diego County and adjacent northern Baja California.
On the Dove Lane property, Del Mar manzanita typically occurs in small localized patches
within southern maritime chaparral. It is concentrated in the southwestern portions of the
property. Approximately 20 individuals are present in the subarea.
Comarostaphylis diversifolia ssp. diversifolia - summer-holly
USFWS: former Category 2 candidate
CDFG: None
CNPS: List IB, 2-2-2
Summer-holly is a large shrub generally occurring on north-facing canyons and slopes and in
sandy washes in chaparral and foothill habitats below 700 m (2,300 ft) in scattered locations
from the Pacific coast in San Diego County south into Baja California. Reported localities in
the County include San Marcos Mountains, Mount Whitney, Rancho Santa Fe, Gonzales
Canyon, Encinitas, Mount Soledad, Penasquitos Canyon, Del Mar Heights, Iron Mountain,
canyons of Mission Valley, Jamul Valley, and Otay Mountain (Beauchamp 1986).
A single individual of summer-holly was observed along the southern property boundary within
the southern maritime chaparral habitat. Owing to the steep topography and dense vegetation,
access to the general area is poor. Consequently, a few other individuals of this species may
be present in the general area and were undetected.
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Biology Report for the Dove Lane Property
Quercus agrifolia - coast live oak
USFWS: None
CDFG: None
CNPS: None
The coast live oak is a moderately large evergreen tree with deep green foliage, trunk with
smooth or with broad checked ridges, with a broad-headed appearance. It generally occurs in
valleys and on slopes in coastal areas below about 1200 m, from Sonoma County to San Diego
County. It may occur in closed canopy riparian woodlands and is an indicator of southern oak
woodland. Typically, presence of single, isolated individuals of this species are not mapped.
A single tree does not comprise the function and value of habitat such as southern live oak
riparian forest or live oak woodland. A single tree does not provide the resources required to
support wildlife species that typically rely on oak dominated habitats. However, the jurisdiction
expressed concern regarding impacts to the isolated tree, thus, it was mapped and is discussed
in this report.
Quercus dumosa - Nuttall's scrub oak
USFWS: former Category 2 candidate
CDFG: None
CNPS: List IB, 2-3-2
It was proposed (Hickman 1993) that the common, widespread species formerly known as scrub
oak (Quercus dumosa) actually represents two closely related species — Nuttall's scrub oak
(Quercus dumosa) and "interior" scrub oak (Quercus berberidifolid). Although interior scrub
oak is widely distributed throughout southern California in chaparral habitats, Nuttall's scrub oak
is restricted to the narrow coastal strip, and hence, has been severely affected by development.
This species was one of eight native plants included in a "southern maritime chaparral listing
package" circulated by the U.S. Fish and Wildlife Service in 1993.
Nuttall's scrub oak occurs as scattered individuals within the southern mixed and southern
maritime chaparral habitats onsite. A total of three individuals were observed and it is likely
that more individuals are present within the dense vegetation in the southwestern corner of the
property.
Selaginella cinerascens - ashy spike-moss
USFWS: None
CDFG: None
CNPS: List 4, 1-2-1
This tiny, prostrate, whitish gray, moss-like plant occurs in San Diego County and adjacent
northwestern Baja California, Mexico. In San Diego County it ranges from about Camp
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Pendleton south to the international border. It is relatively abundant in coastal areas, occurring
on flat mesas below 300 m that are prime locations for housing. Development of these areas
has caused massive reduction of the habitat of the ashy spike-moss. This plant is one of the
most common understory plants in coastal sage scrub and coastal chaparral communities, but has
a restricted geographical range in southern California.
Ashy spike-moss is common throughout much of the southern maritime chaparral onsite.
4.3.2 Sensitive Wildlife Species
One animal species listed as rare, threatened, or endangered by the USFWS or CDFG was
observed onsite: California gnatcatcher (Polioptila californica). This species is discussed below
and locations mapped on Figure 3. No other species formerly recognized as the former
Category 2 candidates for listing by the USFWS or recognized as sensitive by resource agencies
were observed. One other species currently under great concern by the resources agencies is
the quino checkerspot butterfly. Currently almost every property undergoing consideration for
development requires addressing the likelihood of presence of the butterfly. This species is
discussed below. The listing authorities and explanation of listing categories are presented in
Appendix C.
Polioptila californica - California gnatcatcher
USFWS: Threatened
CDFG: Species of Special Concern
The California gnatcatcher is a small gray non-migratory bird with black tail markings. During
the breeding season the male has a distinct black cap. Gnatcatchers eat insects and build a
small, cup-shaped nest of plant material, animal hair, and spider webs. A pair of gnatcatchers
typically forage over 5 to 20 acres during the breeding season and more widely at the end of
spring. The present known range of the California gnatcatcher extends from the Palos Verdes
Peninsula of Los Angeles County south through Orange, western Riverside, and San Diego
counties, into northern Baja California, Mexico. The gnatcatcher is a near obligate resident of
coastal sage scrub and inland sage scrub communities. Individuals of this species generally are
found at elevations below 900 feet in San Diego, Orange, and Los Angeles counties, and below
1600 feet in Riverside County (Atwood 1990). Based on recent resource mapping for
subregional management plans (e.g., MSCP, MHCP, Orange County NCCPs), it is estimated
that there are 3,000-3,500 pairs in California.
Focused surveys were not conducted for the California gnatcatcher due to the absence of their
preferred habitat: coastal sage scrub. However, a female and one or two fledgling gnatcatchers
were observed onsite within the southern maritime chaparral habitat at the southwestern corner
of the property (Figure 3). The gnatcatcher has been recorded from adjacent property to the east
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(SANDAG, 1994) and is known to occur within the Zone 21 area, thus it is not surprising to
observe gnatcatchers within native habitat. During the late summer to fall seasons, gnatcatchers
tend to be more nomadic in their habits and the young of the year disperse through whatever
habitat is available. Thus the species may be observed in any number of habitats that are
atypical for them. Additionally, during the later part of the season when the coastal sage is
drier, the gnatcatcher may forage in areas that are moister and that may contain more insect
prey. Thus the observation of the California gnatcatcher on the property within southern
maritime chaparral habitat, a habitat with which they are not typically associated, is not
surprising and does not necessarily indicate that they are occupying it for breeding purposes.
Euphydryas editha quino - quino checkerspot butterfly
USFWS: Endangered
CDFG: None
The quino checkerspot is the southernmost subspecies of the wide ranging, polytypic species
known as Edith's checkerspot (E. editha}. It formerly occurred throughout southern California
from Orange (Orsak 1977) and western Riverside counties south to Baja California, Mexico
(Brown, Real & Faulkner 1992). By 1977, Orsak (1977) reported that it was locally extinct in
Orange County; and by 1990 it appeared to be extinct in coastal San Diego County. Many of
the former localities of this species still support high quality, undisturbed vegetation; hence, the
reasons for its precipitous decline are unknown. It is likely that the unique metapopulation
dynamics of this species combined with habitat fragmentation as the result of development and
the drought years of the mid-1980s effectively eliminated it from the western portion of San
Diego County.
The habitat assessment of the property determines whether the project site contains habitat
components and features appropriate to support the quino checkerspot. The butterfly is
associated with low elevation meadow habitats or clearings characterized by clay soils or
cryptogamic plants and may occur in sparsely vegetated chaparral, coastal sage scrub, or oak
woodlands. Other habitat features include the presence of host plants [dwarf plantain (Plantago
erecta) or owls-clover (Castilleja exserta)], nectar plants [popcorn flower (Cryptantha sp.),
goldfields (Lasthenia sp.), fiddleneck (Amsinckia intermedia), chia (Salvia columbariae), or other
spring annuals] located in sparsely vegetated areas, and hilltops and ridgelines.
The Dove Lane property is characterized by disturbed habitat in the form of agriculture usage
and existing residences. The development envelope is almost exclusively restricted to the
currently disturbed habitat and includes very small amounts of native habitat. Thus very little
impact to potential habitat would occur. In addition, there are no hilltops or ridges present on
the site; the property is relatively level. No clay soils are present; the soils are dominated by
sandstone based formations. No foodplant and very little nectar source is available. The nectar
source is located within areas designated for open space. Finally, the native habitat present
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onsite is characterized as very dense chaparral and oak forest, thus no potential habitat is
available onsite. Based on the lack of any of the habitat features or components required to
support the quino checkerspot butterfly, no survey during the flight period would be required.
4.3.3 Sensitive Habitats
Sensitive habitats are those that are considered rare within the region, support sensitive plant
and/or wildlife species, or function as corridors for wildlife movement. Habitat types found
onsite that are considered sensitive include southern maritime chaparral and southern coast live
oak riparian forest.
4.3.4 Wildlife Corridors and Habitat Linkages
Wildlife corridors are linear features that connect large patches of natural open space and
provide avenues for the immigration and emigration of animals. Wildlife corridors contribute
to population viability in several ways: (1) they assure the continual exchange of genes between
populations which helps maintain genetic diversity; (2) they provide access to adjacent habitat
areas representing additional territory for foraging and mating; (3) they allow for a greater
carrying capacity; and (4) they provide routes for colonization of habitat lands following local
populations extinctions or habitat recovery from ecological catastrophes (e.g., fires).
Habitat linkages are patches of native habitat that function to join two larger patches of habitat.
They serve as connections between habitat patches and help reduce the adverse affects of habitat
fragmentation. Although individual animals may not move through a habitat linkage, the linkage
does represent a potential route for gene flow and long-term dispersal. Habitat linkages may
serve as both habitat and avenues of gene flow for small animals such as reptiles and
amphibians. Habitat linkages may be represented by continuous patches of habitat or by nearby
habitat "islands" that function as "stepping stones" for dispersal.
No habitat linkages/wildlife corridors extend through the site, however, a patch of habitat
extends onto the site at the southwestern corner that is an extension of native habitat that is
present further west.
4.4 REGIONAL RESOURCE PLANNING CONTEXT
In San Diego County, three major, coordinated conservation planning efforts currently are in
progress with the long-term goal of identifying a system of preserves that will protect native
habitat lands and their associated biota. The three efforts are (1) the City of San Diego's
Multiple Species Conservation Program (MSCP), administered by the Metropolitan Wastewater
Department, focused on biological resource planning for the southwestern one-fourth of the
County; (2) the San Diego Association of Government's (SANDAG) Multiple Habitat
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Conservation Program (MHCP), funded by a consortium of jurisdictions in northern San Diego
County known as the North County Wildlife Forum, focusing on the northwestern one-fourth
of the County; and (3) the County of San Diego Open Space Plan, which focuses on the portion
of the County east of the MSCP and MHCP study areas. The ultimate goal of these plans is the
establishment of biological reserve areas in conformance with the State of California's Natural
Community Conservation Program (NCCP). These programs are moving forward under the
regulatory influence of the 4(d) Rule pursuant to the Endangered Species Act, which allows for
the interim loss of 5% of existing coastal sage scrub until the preserves (NCCPs) are formalized.
In this context, the Dove Lane property lies within the City of Carlsbad Focus Planning Area
of the MHCP and is within Preserve Planning Area 4 of the Carlsbad Habitat Management Plan
(HMP). The property is located within a Biological Core and Linkage Area that has been
designated to receive 50 to 60 percent conservation. The patch of native habitat onsite is an
extension of offsite habitat that has been identified as receiving 90 percent conservation or that
is considered part of a Biological Core and Linkage Area where percent conservation has not
yet been determined. The Biological Core and Linkage Area represents the envelope within
which a future biological preserve area will be more accurately defined. Core Areas were
defined as "concentrations of sensitive biological resources whose loss could not be mitigated
elsewhere."
The most important biological feature of the Dove Lane property is the patch of southern
maritime chaparral habitat located at the southwestern corner of the site. Although the patch of
habitat does not form a corridor or linkage of habitat from one area to another within the region,
the patch is an extension of existing native habitat offsite and contains plant species that are
sensitive or listed as endangered.
5.0 ANTICIPATED PROJECT IMPACTS
This section addresses potential impacts to biological resources that would result from
implementation of the proposed project, and provides analyses of significance for each potential
impact. Impacts were quantified by overlaying the limits of project grading on the biological
resources map of the site (Figure 4). For purposes of this assessment, all biological resources
within the limits of grading for development are considered 100 percent lost.
Impacts to biological resources can be direct - resulting from the permanent removal of habitat,
or indirect - resulting from changes in land use adjacent to natural habitat (e.g., increased light,
noise, and urban runoff, interruption of wildlife movement, etc.). Both of these types of impacts
and their levels of significance are discussed in this section.
16
BASE TOPO/GRAOING SOURCE: Hunsoker & Associates, 1998
-I
Vegetation Types:
I SMC I Southern Maritime Chaparral
SMXl Southern Mixed Chaparral
ORF Coast Live Oak Riparian Forest
EW Eucalyptus Woodland
DH Disturbed Habitat
Sensitive Animal Species:
CAGN California gnatcatcher
Sensitive Plant Species:
Ag Arctostaphylos glandulosa
Cd Comarostaphylis divers/folia
Qa Quercus agrifolia
Qd Quercus dumosa
NOTE: Numbers indicate individual plant
counts at that location.
Proposed Limits of Residential Grading
Proposed Limits of Poinsettia Lane Grading
200
Scale In Feet
Dove Lane - Biological Resources Report & Impact Analysis
Biological Resources Map With Proposed Grading
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I Biology Report for the Dove Lane Property
I 5.1 EXPLANATION OF DETERMINATION OF SIGNIFICANCE
• For this section, the following criteria are used to determine the significance of an impact:
Substantial effect on a rare or endangered species plant or animal or habitat of
I that species is considered a significant impact.
Substantial interference with the movement of any resident or migratory fish or
• wildlife species is considered a significant impact.
Substantial reduction of habitat for fish, wildlife, or plants is considered a
• significant impact.
5.2 IMPACTS TO PLANT COMMUNITIES
Direct Impacts
I Implementation of the proposed project would result in the direct loss of 29.6 acres (see Table
2), including impacts to the following habitat types:
I — 1.2 acre of southern mixed chaparral — less than significant
M — 0.4 acres of southern maritime chaparral — significant
0.0 acre of southern coast live oak riparian forest - less than significant
| 0.5 acre of eucalyptus woodland - less than significant
• — 27.4 acres of disturbed/developed habitat — less than significant.
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TABLE 2
IMPACT AND OPEN SPACE ACREAGE FOR THE DOVE LANE PROPERTY
Southern Mixed Chaparral
Southern Maritime Chaparral
Southern Coast Live Oak Riparian Forest
Eucalyptus Woodland
Disturbed/developed Habitat
TOTAL
Direct Impact
1.2 acres
0.4 acres
0.0 acres
0.5 acres
27.4 acres
29.5 acres
Open Space
0.0 acre
5.5 acres
0.4 acre
0.0 acre
1.2 acres
7.1 acres
In general, the proposed plan results in the preservation of 7.1 acres (19.4 percent), 5.9 acres
of which are native habitats, hi natural open space, including 100 percent (0.4 acre) of oak
riparian forest and 93 percent (5.5 acres) of southern maritime chaparral. The location and
configuration of the open space lands are conducive to their long-term viability - they are large,
concentrated blocks of habitat linked with off site natural habitat.
Indirect Impacts
Indirect impacts from the proposed development include the following:
— Reduction in carrying capacity of adjacent native habitats as a result of noise and
lighting associated with development.
— Inadvertent potential increase of feral rat, cat, and other small predator populations
in native habitats adjacent to proposed development areas.
These impacts probably are most severe within the first 50 feet of development. Because the
first 50 feet already is considered 100 percent impacted from the brush management zones, and
indirect impacts from these sources are minimal beyond 50 feet, these impacts are consider less
than significant. Nonetheless certain measures should be implemented to inhibit additional
indirect impacts. These are discussed below under mitigation.
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5.3 IMPACTS TO SENSITIVE PLANTS
Direct Impacts
Implementation of the proposed project would result in the direct loss of the following sensitive
plant species:
- No loss of summer holly (Comarostaphylis diversifolia) - less than significant
— No loss of Del Mar manzanita (Arctostaphylos glandulosa var. crassifolius) - less
than significant
- Approximately 1 individual of Nuttall's scrub oak (Quercus dumosd) - less than
significant
- Approximately 7 percent of ashy spike-moss (Selaginella cinerascens) - less than
significant.
- One individual of coast live oak (Quercus agrifolia) - less than significant.
Although both Nuttall's scrub oak and ashy spike-moss will be directly affected by the proposed
project, the impact is considered less than significant due to the overall low status and small
amount of each of these plant species affected. Additionally, it is expected that additional
amounts of each of these plant species are present within the area designated as open space.
Although the impact to the one live oak is less than significant, due to the concern expressed by
the jurisdiction regarding the impact, mitigation is required.I
Indirect Impacts
• Indirect impacts may result in the intrusion of non-native plant species within the first 50 feet
of the proposed development. However, due to the density of the habitat and high percent cover
I by native plant species, this intrusion will probably be negligible. These indirect impacts are
considered less than significant.
• 5.4 IMPACTS TO SENSITIVE ANIMALS
Direct Impacts
No impacts would occur to sensitive animal species. The California gnatcatcher female and
juvenile(s) that were observed onsite within the southern maritime chaparral most likely are not
residents of the immediate area due to the lack of their preferred habitat. Because of the time
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of year that the survey took place (late summer), it is likely that the birds were dispersing or
roaming within the vicinity. Coastal sage scrub habitat is located nearby both to the east and
west and a gnatcatcher location has been recorded nearby within habitat to the east (SANDAG,
1994). No impacts are expected to occur to the California gnatcatcher.
Indirect Impacts
Indirect impacts may result in the reduction of the carrying capacity of the southern maritime
chaparral plant community, however, the patch of habitat onsite is connected to additional habitat
offsite. These indirect impacts are considered less than significant.
5.5 SUMMARY OF SIGNIFICANT DIRECT AND INDIRECT IMPACTS
The following impacts associated with implementation of the proposed development plan are
considered significant:
a) Loss of 0.4 acre of southern maritime chaparral.
The following impact is not regarded significant but requires mitigation based on input from the
jurisdiction:
a) Loss of one individual of coast live oak.
6.0 RECOMMENDED MITIGATION MEASURES
The mitigation measures presented below are based on the analysis outlined above. The only
impacts that require mitigation are the loss of southern maritime chaparral and coast live oak.
6.1 SUBREGIONAL PLANNING CONTEXT
In a regional context, the sensitive biological resources present of the Dove Lane property are
regionally important due to the limited distribution of southern maritime chaparral habitat and
the connectivity of the southern maritime chaparral habitat onsite with additional habitat offsite.
Although the project results in the loss of 0.4 acres of southern maritime chaparral, the project
contributes to the preservation of resources and the ultimate development of the subregional
preserve system by contributing 5.5 acres of southern maritime chaparral, 24 individuals of Del
Mar manzanita, scrub oak, summer holly, and ashy spike-moss to open space. Such
contributions reduce the financial burden associated with land acquisition which represents the
greatest barrier to successful implementation of subregional biological resource preserve systems.
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The Dove Lane property is located within Preserve Planning Area 4 of the Carlsbad HMP which
has been designated for 50 to 60 percent preservation by the MHCP and is subject to the project-
level conservation requirements outlined within the Carlsbad HMP. On a overall project-level
basis, the property is proposed to receive 19 percent preservation, with the native habitats onsite
proposed to receive approximately 79 percent preservation, which exceeds the goals set by the
MHCP. The proposed project meets the project-level conservation requirements outlined by the
Carlsbad HMP: the project does not preclude the functioning of preserve linkages due to the
lack of such linkages within the property (the project preserves the existing habitat onsite that
connects to a large patch of habitat off site); over 50 percent (actually 93 percent) of the
southern maritime chaparral is preserved; there is no net loss of the coast live oak riparian
forest habitat; the project has been designed to avoid and minimize impacts to sensitive habitats
and species. Thus, the proposed project is consistent with the Carlsbad HMP.
6.2 MITIGATION MEASURES
The project design mitigates direct impacts to southern maritime chaparral and the sensitive plant
species that occur within this habitat. Included in the project design is the granting of an open
space easement over 93 percent (5.5 acres) of the southern maritime chaparral on the Dove Lane
property. This is greater than the 2:1 mitigation ratio that is typically required by the resource
agencies for the impact of southern maritime chaparral. The open space easement also includes
the preservation of 100 percent (24 individuals) of the Del Mar manzanita occurring onsite.
This is also greater than the 2:1 mitigation ratio that is typically required by the resource
agencies for the impact of Del Mar manzanita.
Although the impact to the one isolated coast live oak is not considered significant, it requires
mitigation based on input from the resource agencies. The mitigation is recommended to be
replacement of the one tree at a 10:1 ratio. Thus ten live oaks should be planted within open
space areas. Suitable areas are available within the designated open space in the northwest and
southwest corners. Currently disturbed or open areas are available and the conditions are
suitable for planting of the oaks.
7.0 ACKNOWLEDGMENTS
This report was prepared by DUDEK biologist Anita M. Hayworth, Ph.D. Graphics were
provided by Martie A. demons; Tonette S. Foster provided word processing assistance.
8.0 LITERATURE CITED
Abrams, L. 1923. Illustrated flora of the Pacific States. Stanford University Press, Stanford,
California.
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I American Ornithologists' Union. 1983. The Check-list of North American Birds, 6th edition.
Allen Press, Lawrence, Kansas.
• American Ornithologists' Union. 1989. Thirty-seventh Supplement to the American
Ornithologists' Union Check-List of North American Birds. The Auk 106:532-538.
• Atwood, J. L. 1990. Status review of the California gnatcatcher (Polioptila californicd).
Unpublished technical report, Manomet Bird Observatory, Manomet, Massachusetts. 79
I pp.
Beauchamp, R. M. 1986. A flora of San Diego County, California. Sweetwater Press,
I National City, California. 241 pp.
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Bond, S.I. 1977. An annotated list of the mammals of San Diego County, California. Trans.
San Diego Soc. Nat. Hist. 18: 229-248.I
_ Bowman, R. H. 1973. Soil Survey, San Diego Area, California, Part 1. United States
• Department of the Agriculture. 104 pp. + appendices.
Bury, B. 1971. Status report on California's threatened amphibians and reptiles. California
Department of Fish and Game, Inland Fisheries Administrative Report #72-2.I
I California Department of Fish and Game (CDFG). 1980. At the Crossroads: A Report on the
Status of California's Endangered and Rare Fish and Wildlife. State of California
Resources Agency, Sacramento. California.
| California Department of Fish and Game (CDFG). 1986. Endangered, Rare, and Threatened
Animals of California. State of California Resources Agency, Sacramento, California.
• California Department of Fish and Game (CDFG). 1987. Designated Endangered or Rare
Plants. Summary list from Section 1904 Fish and Game Code (Native Plant Protection
• Act). State of California Resources Agency, Sacramento, California.
Everett, W. T. 1979. Sensitive, threatened and declining bird species of San Diego County.
• San Diego Audubon Society Sketches 29:2-3.
Grinnell, J. and A. Miller. 1944. The distribution of the birds of California. Pacific Coast
• Avifauna 27: 1-608.
Hickman, J. C. 1993. The Jepson manual: Higher plants of California. University of
California Press, Berkeley. 1400 pp.
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8 Holland, R. F. 1986. Preliminary descriptions of the terrestrial natural communities of
California. Nongame-Heritage Program, California Department of Fish and Game. 156
• PP-
Jones, J. K., Jr., D. C. Carter, H. H. Genoways, R. S. Hoffman, and D. W. Rice. 1992.
•
Revised Checklist of North American Mammals North of Mexico. Occasional Papers
of the Museum of Texas Tech University, no. 143.
• McGurty, B. M. 1980. Survey and status of endangered and threatened species of reptiles
• natively occurring in San Diego, California. San Diego Herpetological Society.
• Munz, P. 1974. A flora of Southern California. University of California Press, Berkeley,
• California. 1086 pp.
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Remsen, J. V. 1978. Bird species of special concern hi California: An annotated list of
declining or vulnerable bird species. Administrative Report No. 78-1. Nongame
Wildlife Investigations, Wildlife Management Branch, California Department of Fish and
Game.
SANDAG (San Diego Association of Governments). 1994. Vegetation and sensitive species
maps prepared for the North County Wildlife Forum.
I Skinner, M. W. and B. M. Pavlik. 1994. California Native Plant Society's Inventory of
Rare and Endangered Vascular Plants of California. Special Publication No. 1 (5th
Edition), California Native Plant Society, Sacramento, California. 338 pp.
| Smith, J. P., Jr., and K. Berg. 1988. California Native Plant Society's Inventory of Rare and
Endangered Vascular Plants of California. Special Publication No. 1 (4th Edition),
• California Native Plant Society, Sacramento, California. 168 pp.
Stebbins, R. C. 1985. A field guide to western reptiles and amphibians. Houghton Mifflin
• Co., Boston, Mass.
Stewart, G. R. 1971. Rare, endangered, and depleted amphibians and reptiles in California.
• Herpetology 5:29-35.
United States Fish and Wildlife Service (USFWS). 1989. Federal Register, Part 4, Endangered
and Threatened Wildlife and Plants; Animal Notice of Review. 50 CFR Part 17.
Department of the Interior.
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I United States Fish and Wildlife Service (USFWS). 1990. Federal Register, Part 4, Endangered
and Threatened Wildlife and Plants; Review of Plant Taxa for Listing as Endangered or
• Threatened Species, Notice of Review. 50 CFR Part 17. Department of the Interior.
United States Fish and Wildlife Service (USFWS). 1991. Federal Register, Part 8, EndangeredIand Threatened Wildlife and Plants; Animal Candidate Review for Listing as Endangered
or Threatened Species, Proposed Rule. 50 CFR Part 17. Department of the Interior.
• United States Fish and Wildlife Service (USFWS). 1993. Federal Register, Part 8, Endangered
• and Threatened Wildlife and Plants; Review of Plant Taxa for Listing as Endangered or
Threatened Species. 50 CFR Part 17. Vol. 58. No. 188. Department of the Interior.
Unitt, P. A. 1984. Birds of San Diego County. Memoir 13, San Diego Society of Natural
History. 287 pp.
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Wiggins, I. L. 1980. A flora of Baja California. Stanford University Press. 1025 pp.
Willet, G. 1933. Revised list of birds of southwestern California. Pacific Coast Avifauna
21:1-204.
25
APPENDICES
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APPENDIX A
VASCULAR PLANT SPECIES OBSERVED
ON THE PROJECT SITE
SELAGINELLALES
SELAGINELLACEAE - SPIKE-MOSS FAMILY
Selaginella cinerascens - ashy spike-moss
ANGIOSPERMAE (DICOTYLEDONES)
AIZOACEAE - CARPET-WEED FAMILY
* Carpodbrotus edulis - Hottentot-fig
ANACARDIACEAE - SUMAC FAMILY
Malosma laurina - laurel sumac
Rhus integrifolia - lemonadeberry
Toxicodendron diversilobum - poison-oak
APIACEAE - CARROT FAMILY
* Foeniculum vulgare - sweet fennel
ASCLEPIADACEAE - MILKWEED FAMILY
Asclepias fascicularis - narrow-leaf milkweed
ASTERACEAE - SUNFLOWER FAMILY
Ambrosia psilostachya - western ragweed
Artemisia californica - coastal sagebrush
Artemisia douglasiana - mugwort
Baccharis pilularis - coyotebush
* Carduus pycnocephalus - Italian thistle
* Centaurea melitensis - tocalote
Cirsium occidentale - California thistle
Eriophyllum confertiflorum - golden-yarrow
Gnaphalium canescens - everlasting
Hazardia squarrosus - saw-toothed goldenbush
Hemizonia fasciculata - fascicled tarweed
Heterotheca grandiflora - telegraph weed
Isocoma menziesii - coastal goldenbush
* Lactuca serriola - prickly lettuce
BORAGINACEAE - BORAGE FAMILY
Cryptantha intermedia - common popcorn flower
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I CONVOLVULACEAE - MORNING-GLORY FAMILY
Calystegia macrostegia - morning-glory
I CUCURBITACEAE - GOURD FAMILY
Marah macrocarpa - manroot
| ERICACEAE - HEATH FAMILY
Arctostaphylos glandulosa ssp. crassifolia - Del Mar Manzanita
• Comarostaphylis diversifolia - summer-holly
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APPENDIX A (continued)
BRASSICACEAE - MUSTARD FAMILY
* Brassica nigra - black mustard
* Raphanus sativus - wild radish
CACTACEAE - CACTUS FAMILY
Opuntia littoralis - coast prickly-pear
CAPPARACEAE - CAPER FAMILY
Isomeris arborea - bladder-pod
CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
Sambucus mexicanus - Mexican elderberry
CHENOPODIACEAE - GOOSEFOOT FAMILY
* Salsola tragus - Russian-thistle
CISTACEAE - ROCK-ROSE FAMILY
Helianthemum scoparium - rush-rose
Xylococcus bicolor - mission manzanita
EUPHORBIACEAE - EUPHORB FAMILY
Ricinus communis - castor-bean
FABACEAE - PEA FAMILY
* Acacia melanoxylon - blackwood acacia
* Acacia baileyana - acacia
Lotus scoparius - deerweed
FAGACEAE - OAK FAMILY
Quercus dwnosa - Nuttall's scrub oak
Quercus agrifolia - coast live oak
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I APPENDIX A (continued)
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LAMIACEAE - MINT FAMILY
* Marrubium vulgare - horehound
Salvia mellifera - black sage
MALVACEAE - MALLOW FAMILY
Malacothamnus fasciculatus - bush mallow
MYRTACEAE - MYRTLE FAMILY
* Eucalyptus sp. - eucalyptus
PINACEAE - PINE FAMILY
* Pinus sp. - ornamental pine
POLYGONACEAE - BUCKWHEAT FAMILY
Eriogonum fasciculatum - flat-top buckwheat
* Rumex crispus - curly dock
PREMULACEAE - PRIMROSE FAMILY
* Anagallis arvensis - scarlet pimpernel
RHAMNACEAE - BUCKTHORN FAMILY
Adolphia californica - California adolphia
ROSACEAE - ROSE FAMILY
Adenostoma fasciculata - chamise
Heteromeles arbutifolia - toyon
I SALICACEAE - WILLOW FAMILY
Salix lasiolepis - arroyo willow
SAURURACEAE - LIZARD-TAIL FAMILY
Anemopsis californica - yerba mansa
SCROPHULARIACEAE - FIGWORT FAMILY
Mimulus aurantiacus - bush monkeyflower
SOLANACEAE - NIGHTSHADE FAMILY
* Nicotiana glauca - tree tobacco
* Solanum douglasii - Douglas' nightshade
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APPENDIX A (continued)
ANGIOSPERMAE (MONOCOTYLEDONES)
LELIACEAE - LILY FAMILY
Bloomeria crocea - common golden-stars
Chlorogalum parviflorum - small-flowered soap-plant
Yucca schidigera - Mojave yucca
POACEAE - GRASS FAMILY
* Avena barbata - slender wild oat
* Bromus diandrus - ripgut grass
* Bromus hordeaceus - soft chess
* Bromus madritensis var. rubens - red brome
* Cortaderia dioica - pampas grass
* Cynodon dactylon - Bermuda grass
Leymus condensatus - giant ryegrass
Melica imperfecta - coast range melic
signifies introduced (non-native) species
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I APPENDIX B
•
WILDLIFE SPECIES OBSERVED OR
DETECTED ON THE PROJECT SITE
• TERRESTRIAL VERTEBRATES
• REPTILES AND AMPHIBIANS
I IGUANIDAE - IGUANID LIZARDS
Scleroporus occidentalis - Great Basin fence lizard
— Ufa stansburiana - side-blotched lizard
• BIRDS
I ACCIPITRIDAE - HAWKS
Buteo jamaicensis - red-tailed hawk
I PHASIANIDAE - PHEASANTS & QUAILS
Callipepla californica - California quail
COLUMBD3AE - PIGEONS & DOVES
Zenaida macroura - mourning dove
TROCHILIDAE - HUMMINGBIRDS
Calypte anna - Anna's hummingbird
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I PICIDAE - WOODPECKERS
Colaptes auratus - northern flicker
Picoides nuttallii - Nuttall's woodpecker
• TYRANNIDAE - TYRANT FLYCATCHERS
Sayornis nigricans - black phoebe
• Tyrannus verticalis - western kingbird
CORVIDAE - JAYS & CROWS
Aphelocoma coerulescens - scrub jay
Corvus corax - common raven
Corvus brachyrhynchos - American crow
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_ AEGITHALIDAE - BUSHTITS
I Psaltriparus minimus - bushtit
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I APPENDIX B (continued)
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TROGLODYTEDAE - WRENS
Thryomanes bewickii - Bewick's wren
MUSCICAPIDAE - KINGLETS, GNATCATCHERS, THRUSHES & BABBLERS
Polioptila californica - Calii
Chamaea fasciata - wrentit
Toxostoma redivivum - California thrasher
Mimus polyglottos - northern mockingbird
• Polioptila californica - California gnatcatcher
• MIMIDAE - THRASHERS
• EMBERIZIDAE - WOOD WARBLERS, TANAGERS, BUNTINGS & BLACKBIRDS
Pipilo erythrophthalmus - rufous-sided towhee
• Pipilo crissalis - California towhee
Melospiza melodia - song sparrow
| FRINGILLIDAE - FINCHES
Carpodacus mexicanus - house finch
• Carduelis psaltria - lesser goldfinch
- MAMMALS
LEPORIDAE - HARES & RABBITS
• Sylvilagus sp. - cottontail rabbit
SCIURH)AE - SQUIRRELS
• Spermophilus beecheyi - California ground squirrel
CRICETIDAE - NEW WORLD RATS & MICE
• Neotoma sp. - woodrat
CANIDAE - WOLVES & FOXES
• Canis latrans - coyote
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APPENDIX C
SPECIES SENSITIVITY CATEGORIES
Federal (1993)
Endangered. Taxa threatened throughout all or a significant portion of their range.
Threatened. Taxa likely to become endangered in the foreseeable future.
Category 1. Taxa for which the USFWS currently has on file substantial information on
biological vulnerability and threat(s) to support the appropriateness of proposing to list them as
endangered or threatened species.
Category 2. Taxa for which information now in possession of the USFWS indicates that
proposing to list them as endangered or threatened is appropriate but for which substantial data
on biological vulnerability and threat(s) are not known or on file to support the immediate
preparation of rules.
Category 3. Taxa that were once considered for listing as endangered or threatened, but are
currently not receiving such consideration. These taxa are included in one of the following three
subcategories.
Subcategory 3A: Taxa presumed to be extinct.
Subcategory 3B: Taxa whose names do not meet the Endangered Species Act's
legal definition of species.
Subcategory 3C: Taxa now considered to be more widespread that originally
thought.
Note: The taxa in Categories 1 and 2 are candidates for possible addition to the list of
endangered and threatened species. The USFWS encourages their consideration in
environmental planning.
State of California (1990)
Endangered. Taxa which are in serious danger of becoming extinct throughout all, or a
significant portion, of their range due to one or more causes including loss of habitat, change
in habitat, over exploitation, predation, competition, or disease (Section 2062 of the Fish and
Game Code).
Threatened. Taxa which, although not presently threatened with extinction, are likely to become
endangered species in the foreseeable future (Section 2067 of the Fish and Game Code).
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APPENDIX C
Rare. Taxa which, although not presently threatened with extinction, are present hi such small
numbers throughout their range that they may become endangered if the present environment
worsens (Section 1901 of the Fish and Game Code).
Candidate. Taxa which the Fish and Game Commission has formally noticed as being under
review by the Department in addition to the list of threatened and endangered species.
California Native Plant Society (1994)
Lists
1A: Presumed Extinct in California
IB: Rare or Endangered in California and Elsewhere
2: Rare or Endangered in California, More Common Elsewhere
3: Need More Information
4: Plants of Limited Distribution
Note: Plants on CNPS list IB meet California Department of Fish and Game Criteria for
Rare or Endangered listing.
R-E-D code
R (Rarity)
1- Rare, but found in sufficient numbers and distributed widely enough that the potential
for extinction or extirpation is low at this tune.
2- Occurrence confined to several populations or to one extended population.
3- Occurrence limited to one or a few highly restricted populations, or present in such
small numbers that it is seldom reported.
E (Endangerment)
1- Not endangered
2- Endangered hi a portion of its range
3- Endangered throughout its range
D (Distribution)
1- More or less widespread outside of California
2- Rare outside California
3- Endemic to California