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Description: NWI digital data files are records of wetlands location and classification as developed by the U.S. Fish & Wildlife Service. The classification system was adopted as a national classification standard in 1996 by the Federal Geographic Data Committee. This dataset is one of a series available in 7.5 minute by 7.5 minute blocks containing ground nimetric coordinates of wetlands point, line, and polygon features and wetlands attributes. When completed, the series will provide coverage for all of the contiguous United States, Hawaii, Alaska, and U.S. protectorates in the Pacific and Carribbean. The NWI maps do not show all wetlands since the maps are derived from aerial photointerpretation with varying limitations due to scale, photo quality, inventory techniques, and other factors. Consequently, the maps tend to show wetlands that are readily photointerpreted given consideration of photo and map scale. In general, the older NWI maps prepared from 1970s-era black and white photography (1:80,000 scale) tend to be very conservative, with many forested and drier-end emergent wetlands (e.g., wet meadows) not mapped. Maps derived from color infrared photography tend to yield more accurate results except when this photography was captured during a dry year, making wetland identification equally difficult. Proper use of NWI maps therefore requires knowledge of the inherent limitations of this mapping. It is suggested that users also consult other information to aid in wetland detection, such as U.S. Department of Agriculture soil survey reports and other wetland maps that may have been produced by state and local governments, and not rely solely on NWI maps. See section on "Completeness_Report" for more information. Also see an article in the National Wetlands Newsletter (March-April 1997; Vol. 19/2, pp. 5-12) entitled "NWI Maps: What They Tell Us" (a free copy of this article can be ordered from U.S. Fish and Wildlife Service, ES-NWI, 300 Westgate Center Drive, Hadley, MA 01035, telephone, 413-253-8620).
Copyright Text: For questions and comments see the National Wetlands Inventory Web Page (http://www.nwi.fws.gov/)
Value: Ceanothus spinosus and Ceanothus megacarpus and Cercocarpus betuloides Superalliance Mapping Unit Label: Ceanothus spinosus and Ceanothus megacarpus and Cercocarpus betuloides Superalliance Mapping Unit Description: Symbol:
Value: Ceanothus spp. and Cercocarpus betuloides Superalliance Mapping Unit Label: Ceanothus spp. and Cercocarpus betuloides Superalliance Mapping Unit Description: Symbol:
Value: Mimulus aurantiacus and Toxicodendron diversilobum Superalliance Mapping Unit Label: Mimulus aurantiacus and Toxicodendron diversilobum Superalliance Mapping Unit Description: Symbol:
Value: Native and Non-Native Herbaceous Superallliance Mapping Unit Label: Native and Non-Native Herbaceous Superallliance Mapping Unit Description: Symbol:
Value: Post Fire or Post Clearing Regeneration Unidentifiable Shrubs Label: Post Fire or Post Clearing Regeneration Unidentifiable Shrubs Description: Symbol:
Value: Sparsely Vegetated to Non-vegetated Artificial Cuts and Embankments Label: Sparsely Vegetated to Non-vegetated Artificial Cuts and Embankments Description: Symbol:
Name: Environmentally Sensitive Habitat Areas (ESHA)
Display Field: ID
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: Under the direction of staff ecologists, GIS/Mapping staff analyzed vegetation data provided by the National Park Service, National Wetlands Inventory (NWI) wetlands data and other source materials to identify potential areas of sensitive habitat that would require protection in any future development within the Santa Monica Mountains portion of theCoastal Zone in Ventura County. Those habitat areas were reviewed and refined by Ventura District Office staff using aerial photography and on-the-ground verification, and included the exclusion of major roads.
Copyright Text: California Coastal Commission GIS/Mapping Unit, October 2016
Description: The California Protected Areas Database (CPAD) contains data on lands owned in fee by governments, non-profits and some private entities that are protected for open space purposes. Data includes all such areas in California, from small urban parks to large national parks and forests, mostly aligned to assessor parcel boundaries. Data is collected by Holdings (parcels) which are aggregated to Units (commonly named areas within a county) and Super Units (commonly named areas generally).
Copyright Text: California Protected Areas Database (CPAD - www.calands.org). December 2021.
Description: Vector datasets of CWHR range maps are one component of California Wildlife Habitat Relationships (CWHR), a comprehensive information system and predictive model for Californias wildlife. The CWHR System was developed to support habitat conservation and management, land use planning, impact assessment, education, and research involving terrestrial vertebrates in California. CWHR contains information on life history, management status, geographic distribution, and habitat relationships for wildlife species known to occur regularly in California. Range maps represent the maximum, current geographic extent of each species within California. They were originally delineated at a scale of 1:5,000,000 by species-level experts and have gradually been revised at a scale of 1:1,000,000. For more information about CWHR, visit the CWHR webpage (https://www.wildlife.ca.gov/Data/CWHR). The webpage provides links to download CWHR data and user documents such as a look up table of available range maps including species code, species name, and range map revision history; a full set of CWHR GIS data; .pdf files of each range map or species life history accounts; and a User Guide.
Copyright Text: Melanie Gogol-Prokurat; California Department of Fish and Wildlife (CDFW); Biogeographic Data Branch; (916) 324-9265; ; Melanie.Gogol-Prokurat@wildlife.ca.gov;
Description: A Linkage Design addresses the potential movement needs for several focal species. For more details on the methods used for creating each Linkage Design refer to the individual linkage reports at http://www.scwildlands.org/reports.aspx This 'Linkage Designs' feature class delineates the outer-boundaries of 12 critical landscape linkages identified by the South Coast Missing Linkages Project. The 3 cross-border landscape linkages are not included in this generalized feature class. 1. Tehachapi The Tehachapi Connection encompasses habitats between the Sierra Madre and Castaic ranges of the Los Padres and Angeles National Forests and the Sierra Nevada Range of the Sequoia National Forest. The Linkage Design addresses the habitat and movement needs of 34 focal species, including Puma concolor (Mountain lion), Taxidea taxus (American badger), Odocoileus hemionus (Mule deer), Vulpes macrotis mutica (San Joaquin kit fox), Sciurus griseus (Western gray squirrel), Dipodomys heermanni (Heerman's kangaroo rat), Dipodomys nitratoides nitratoides (Tipton kangaroo rat), Perognathus alticola inexpectatus (Tehachapi pocket mouse), Strix occidentalis occidentalis (California spotted owl), Athene cunicularia (Burrowing owl), Toxostoma redivivum (California thrasher), Melanerpes formicivorus (Acorn woodpecker), Lampropeltis zonata (California mountain kingsnake), Gambelia wislizenii (Long-nosed leopard lizard), Gamelia sila (Blunt-nosed leopard lizard), Phrynosoma coronatum (Coast horned lizard), Clemmys marmorata (Western pond turtle), Ensatina eschscholtzii (Yellow-blotched salamander), Arctonotus lucidus (Bear sphinx moth), Speyeria callippe macaria (Callippe fritillary), Plebulina emigdionis (San Emigdio blue butterfly), Lycaena heteronea clara (Bright blue copper butterfly), Crossidius coralinus tejonicus (Tejon Longhorned borer), Brachysomida vittigera (Lined Lomatium Longhorned borer), Pleocoma linsleyi (Linsley's Rain beetle), Pinus monophylla (Singleleaf pinyon), Pinus jeffreyi (Jeffrey pine), Aesculus californica (California buckeye), Abies concolor (White fir), Alnus rhombifolia (White alder), Quercus kelloggii (California black oak), Quercus douglasii (Blue oak), Opuntia basilaris var. treleasei (Bakersfield cactus), and Eschscholzia lemmonii kernensis (Tejon poppy). Please see the full report, South Coast Missing Linkages Project: A Linkage Design for the Tehachapi Connection (http://www.scwildlands.org/reports.aspx) for more information. 2. Santa Monica - Sierra Madre The Santa Monica-Sierra Madre Connection encompasses habitats between the Santa Monica Mountains National Recreation Area (south of the 101 Freeway) and Los Padres National Forest. The Linkage Design addresses the habitat and movement needs of 20 focal species including Puma concolor (Mountain lion), Taxidea taxus (American badger), Odocoileus hemionus (Mule deer), Sylvilagus bachmanni (Brush rabbit), Neotoma lepida (Desert woodrat), Lanius ludovicianus (Loggerhead shrike), Toxostoma redivivum (California thrasher), Melanerpes formicivorus (Acorn woodpecker), Campylorhynchus brunneicapillus (Cactus wren), Bufo boreas (Western toad), Lampropeltis getula (California kingsnake), Cnemidophoris tigris stejnegeri (Western whiptail), Oncorhynchus mykiss mykiss (Southern steelhead trout), Anuroctonus phaiodactylus (Scorpion), Odonata - Zygoptera spp. (Damselflies), Euphydryas chalcedona (Chalcedon checkerspot butterfly), Pogonomyrmex rugosus (Harvester ant), Juglans californica (California walnut), Quercus lobata (Valley oak), and Arctostaphylos glauca (Bigberry manzanita). Please see the full report, South Coast Missing Linkages Project: A Linkage Design for the Santa Monica-Sierra Madre Connection (http://www.scwildlands.org/reports.aspx) for more information. The 'Santa Monica - Sierra Madre' feature addresses two of the 15 priority linkages. 3. Sierra Madre - Castaic The Sierra Madre-Castaic Connection links the Sierra Madre Mountains of Los Padres National Forest and the Castaic Ranges (Liebre, Sawmill, and Sierra Pelona mountains) of the Angeles National Forest. The Linkage Design addresses the habitat and movement needs of 12 focal species, including Puma concolor (Mountain lion), Taxidea taxus (American badger), Odocoileus hemionus (Mule deer), Dipodomys agilis (Pacific kangaroo rat), Strix occidentalis occidentalis (California spotted owl), Melanerpes formicivorus (Acorn woodpecker), Clemmys marmorata (Western pond turtle), Thamnophis hammondii (Two-striped garter snake), Lampropeltis zonata (California mountain kingsnake), Ensatina eschscholtzii eschscholtzii (Monterey salamander), Arctonotus lucidus (Bear sphinx moth), and Pleocoma linsleyi (Rain beetle). Please see the full report, South Coast Missing Linkages Project: A Linkage Design for the Sierra Madre-Castaic Connection (http://www.scwildlands.org/reports.aspx) for more information. 4. San Gabriel - Castaic The San Gabriel-Castaic Connection links the San Gabriel and Castaic ranges of the Angeles National Forest. The Linkage Design addresses the habitat and movement needs of 15 focal species, including Puma concolor (Mountain lion), Taxidea taxus (American badger), Odocoileus hemionus (Mule deer), Dipodomys agilis (Pacific kangaroo rat), Strix occidentalis occidentalis (California spotted owl), Athene cunicularia (Burrowing owl), Toxostoma redivivum (California thrasher), Melanerpes formicivorus (Acorn woodpecker), Clemmys marmorata (Western pond turtle), Thamnophis hammondii (Two-striped garter snake), Lampropeltis zonata (California mountain kingsnake), Ensatina eschscholtzii eschscholtzii (Monterey salamander), Arctonotus lucidus (Bear sphinx moth), Lepidospartum squamatum (Scalebroom), and Juniperus californica (California juniper). Please see the full report, South Coast Missing Linkages Project: A Linkage Design for the San Gabriel-Castaic Connection (http://www.scwildlands.org/reports.aspx) for more information. 5. San Gabriel - San Bernardino The San Gabriel-San Bernardino Connection links the San Gabriel and San Bernardino ranges of the Angeles and San Bernardino National Forests. The Linkage Design addresses the habitat and movement needs of 24 focal species, including Puma concolor (Mountain lion), Taxidea taxus (American badger), Ovis canadensis (Bighorn sheep), Odocoileus hemionus (Mule deer), Neotoma fuscipes macrotis (Dusky-footed woodrat), Dipodomys merriami parvus (San Bernardino kangaroo rat), Dipodomys agilis (Pacific kangaroo rat), Strix occidentalis occidentalis (California spotted owl), Oreortyx pictus (Mountain quail), Chamaea fasciata (Wrentit), Salpinctes obsoletus (Rock wren), Sitta pygmaea melanotis (Pygmy nuthatch), Masticophis lateralis lateralis (Chaparral whipsnake), Phrynosoma coronatum blainvillii (San Diego horned lizard), Hyla cadaverina (California treefrog), Rhinichthys osculus (Santa Ana speckled dace), Pepsis spp. (Tarantula hawk), Callophrys perplexa (Green hairstreak butterfly), Apodemia mormo (Metalmark butterfly), Eleodes armata (Desert skunk beetle), Rhaphiomidas acton (Giant flower-loving fly), Alnus rhombifolia (White alder), Artemisia californica (California sagebrush), and Dodecahema leptoceras (Slender-horned spineflower). Please see the full report, South Coast Missing Linkages Project: A Linkage Design for the San Gabriel-San Bernardino Connection (http://www.scwildlands.org/reports.aspx) for more information. 6. San Bernardino - San Jacinto The San Bernardino-San Jacinto Connection links the San Bernardino and San Jacinto Mountains of the San Bernardino National Forest and the Badlands extending northwest from the San Jacinto Mountains. The Linkage Design addresses the habitat and movement needs of 23 focal species, including Puma concolor (Mountain lion), Taxidea taxus (American badger), Odocoileus hemionus (Mule deer), Ammospermophilus leucurus (Antelope ground squirrel), Neotoma macrotis (large-eared woodrat), Dipodomys merriami (Merriam's kangaroo rat), Dipodomys agilis (Pacific kangaroo rat), Perognathus longimembris (little pocket mouse), Strix occidentalis occidentalis (California spotted owl), Chamaea fasciata (Wrentit), Salpinctes obsoletus (Rock wren), Sitta pygmaea melanotis (Pygmy nuthatch), Crotalus mitchellii (Speckled rattlesnake), Masticophis lateralis (Chaparral whipsnake), Phrynosoma coronatum (Coast horned lizard), Hyla cadaverina (California treefrog), Pepsis spp. (Tarantula hawk), Callophrys perplexa (Green hairstreak butterfly), Apodemia mormo (Metalmark butterfly), Eleodes armata (Desert skunk beetle), Alnus rhombifolia (White alder), Artemisia californica (California sagebrush), and Dodecahema leptoceras (Slender-horned spineflower). Please see the full report, South Coast Missing Linkages Project: A Linkage Design for the San Bernardino-San Jacinto Connection (http://www.scwildlands.org/reports.aspx) for more information. 7. San Bernardino - Little San Bernardino The San Bernardino-Little San Bernardino Connection links the San Bernardino Mountains of San Bernardino National Forest and the Little San Bernardino Mountains of Joshua Tree National Park. The Linkage Design addresses the habitat and movement needs of 23 focal species, including Puma concolor (Mountain lion), Taxidea taxus (American badger), Ovis canadensis (Bighorn sheep), Odocoileus hemionus (Mule deer), Ammospermophilus leucurus (Antelope ground squirrel), Neotoma macrotis (Large-eared woodrat), Dipodomys merriami (Merriam's kangaroo rat), Dipodomys agilis (Pacific kangaroo rat), Perognathus longimembris (Little pocket mouse), Oreortyx pictus (Mountain quail), Chamaea fasciata (Wrentit), Salpinctes obsoletus (Rock wren), Campylorhynchus brunneicapillus (Cactus wren), Crotalus mitchellii (Speckled rattlesnake), Masticophis lateralis (Chaparral whipsnake), Phrynosoma coronatum (Coast horned lizard), Hyla cadaverina (California treefrog), Pepsis spp. (Tarantula hawk), Callophrys perplexa (Green hairstreak butterfly), Apodemia mormo (Metalmark butterfly), Eleodes armata (Desert skunk beetle), Alnus rhombifolia (White alder), and Yucca brevifolia (Joshua tree). Please see the full report, South Coast Missing Linkages Project: A Linkage Design for the San Bernardino-Little San Bernardino Connection (http://www.scwildlands.org/reports.aspx) for more information. 8. San Bernardino - Granite The San Bernardino-Granite Connection links the San Bernardino National Forest with lands administered by the Bureau of Land Management in the Granite, Ord, and Rodman Mountains. The Linkage Design addresses the habitat and movement needs of 14 focal species, including Taxidea taxus (American badger), Ovis canadensis (Bighorn sheep), Ammospermophilus leucurus (Antelope ground squirrel), Neotoma lepida (Desert woodrat), Dipodomys merriami (Merriam's kangaroo rat), Dipodomys agilis (Pacific kangaroo rat), Salpinctes obsoletus (Rock wren), Campylorhynchus brunneicapillus (Cactus wren), Crotalus mitchellii (Speckled rattlesnake), Pepsis spp. (Tarantula hawks), Callophrys perplexa (Green hairstreak butterfly), Apodemia mormo (Metalmark butterfly), Eleodes armata (Desert skunk beetle), and Yucca brevifolia (Joshua tree). Please see the full report, South Coast Missing Linkages Project: A Linkage Design for the San Bernardino-Granite Connection (http://www.scwildlands.org/reports.aspx) for more information. 9. Palomar - San Jacinto - Santa Rosa The Palomar-San Jacinto/Santa Rosa Connection links the Palomar Ranges of Cleveland National Forest, and the San Jacinto and Santa Rosa Mountains of San Bernardino National Forest and the San Jacinto and Santa Rosa Mountains National Monument. The Linkage Design addresses the habitat and movement needs of 17 focal species, including Puma concolor (Mountain lion), Taxidea taxus (American badger), Odocoileus hemionus (Mule deer), Dipodomys merriami collinus (Aguanga kangaroo rat), Strix occidentalis occidentalis (California spotted owl), Callipepla californica (California quail), Lanius ludovicianus (Loggerhead shrike), Chamaea fasciata (Wrentit), Salpinctes obsoletus (Rock wren), Masticophis lateralis (Chaparral whipsnake), Phrynosoma coronatum (Coast horned lizard), Clemmys marmorata (Western pond turtle), Bufo boreas (Western toad), Papilio eurymedon (Pale swallowtail), Euphydryas editha quino (Quino checkerspot ), and Yucca whipplei (Our Lord's candle). Please see the full report, South Coast Missing Linkages Project: A Linkage Design for the Palomar-San Jacinto/Santa Rosa Connection (http://www.scwildlands.org/reports.aspx) for more information. 10. Santa Ana - Palomar The Santa Ana-Palomar Connection links Cleveland National Forest and Camp Pendleton Marine Corps Base lands in the Santa Ana Mountains and the Cleveland National Forest lands in the Palomar Mountains. The Linkage Design addresses the habitat and movement needs of 21 focal species, including Puma concolor (Mountain lion), Taxidea taxus (Badger), Neotoma fuscipes (Dusky-footed Woodrat), Aquila chrysaetos (Golden eagle), Dendroica petechia (Yellow warbler), Callipepla californica (California quail), Baeolophus inornatus (Oak titmouse), Crotalus rubber (Red diamond rattlesnake), Clemmys marmorata (Western pond turtle), Hyla cadaverina (California treefrog), Bufo boreas (Western toad), Oncorhynchus mykiss (Southern steelhead trout), Gila orcutti (Arroyo chub), Papilio eurymedon (Pale swallowtail), Speyeria callippe comstocki (Comstock's fritillary), Adelpha bredowii (California sister), Timema podura (Timema walkingstick), Limnanthes gracilis var parishii (Cuyamaca meadowfoam), Quercus engelmannii (Engelmann oak), Hesperoyucca whipplei (Yucca whipplei), and Arctostaphylos rainbowensis (Rainbow manzanita. Please see the full report, South Coast Missing Linkages Project: A Linkage Design for the Santa Ana-Palomar Connection (http://www.scwildlands.org/reports.aspx) for more information. 11. Peninsular - Borrego The Peninsular-Borrego Connection links Cleveland National Forest with Cuyamaca and Anza Borrego State Parks. The Linkage Design addresses the habitat and movement needs of 14 focal species, including Puma concolor (Mountain lion), Taxidea taxus (Badger), Ovis canadensis (Bighorn sheep), Odocoileus hemionus (Mule deer), Lepus californicus (Black-tailed jackrabbit), Aquila chrysaetos (Golden eagle), Ammodramus savannarum (Grasshopper sparrow), Branta bernicla (Black brant), Xantusia henshawi (Granite night lizard), Coleonyx switaki (Barefoot gecko), Philotes sonorensis (Sonoran blue butterfly), Euphydryas chalcedona (Chalcedon checkerspot butterfly), Dasymutilla coccinea (Velvet ant), and Alnus rhombifolia (White alder). Please see the full report, South Coast Missing Linkages Project: A Linkage Design for the Peninsular-Borrego Connection (http://www.scwildlands.org/reports.aspx) for more information.
Description: Roads can be harmful to wildl¡fe for several reasons: they are a source of animal mortality; they can disrupt normal animal movements; and limit the dispersal of wildlife populations. However, in some cases, wildlife can cross roads and highways more safely by using passages such as drainage culverts, bridges, underpasses, or small below-grade access roads beneath or above roads and highways.Several local studies of wildlife using crossing structures, as well as studies of roadkill counts, have occurred throughout Ventura County (Anderson,2012; LSA, 2004). A study of crossing use by various types of wildlife at various locations in Ventura County (e.9., Highway 101, State Routes 23, 126 and 118), indicated that passages beneath highways can provide important safe avenues for animals to cross roads. (Sikich and Riley,2012; Brown and Riley,2013; Moriarty and Riley, 2016). Studies that monitored wildlife use of crossing structures along the SR-23 and SR-118 noted the wide variety of animals using the crossings, including deer, raccoon, coyote, bobcat, opossum, and striped skunk (Ng et. al., 2004). ln addition, despite the SR-118 being a major barrier to movement, as evidenced by mapping of home ranges, gene flow still occurs in populations on either side of the highway because of the connectivity these crossing structures provide (Brown and Riley, 2013). Studies have further shown that small wildlifePlanning Commission Staff Report for PL16-0127 January 31, 2019 Page 19 of 42such as reptiles, amphibians, and small mammals may use cross¡ngs under small-scale roads, such as those maintained by the County's Public Works Agency. Clearly, roadway crossing structures facilitate wildlife movement through and across roads in Ventura County.The environmental context surrounding roadway crossing structures can influence the willingness of animals to cross, and proper management of some of these environmental attributes can increase the degree to which animals use these structures. For example, one study found that larger passages with vegetation close to the passage entrances, favorable habitat in the surrounding area, and low disturbance by humans were important features that influenced use of these structures by small and medium carnivores (Grilo et. al., 2008).
Copyright Text: Ventura County Planning Division, January 2019