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California red-legged frog |
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April 13, 2006Final economic analysis (pdf) | California red-legged frog | |||
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(Click on the links below for pdf maps. For more complete unit descriptions, go to the Federal Register notice.) Yuba-1, Little Oregon Creek -- 3,776 acres in northeastern Yuba County, north of Marysville Road and south of La Porte Road. This unit consists of private land. Possible threats: wildland fire suppression, timber harvesting, and predation by non-native species. Nevada-1, Sailor Flat -- 6,733 acres in central Nevada County, approximately 3 miles northeast of Nevada City, south of Tyler Foote Road and north of State Highway 20. This unit consists of Federal, State, and private land. Possible threats: timber harvesting; removal and alteration of habitat due to urban development; wildland fire suppression, and predation by non-native species. El Dorado-1, Spivey Pond -- 8,388 acres in central El Dorado County, south of State Highway 50 and east of Newton Road. The unit consists entirely of private land. Possible threats: wildland fire suppression; timber harvesting, and predation by non-native species. (Snows Quarry does not contain the essential habitat elements and has been removed from this final designation of critical habitat. However, due to technical mapping constraints we did not physically remove the area from the map. Also excluded are 54 acres directly around Spivey Pond that are managed by the Bureau of Reclamation for conservation of the frog.) Napa-1, Wragg Creek -- 2,529 acres in east-central Napa County , bisected by State Highway 128, and largely to the west of State Highway 121. The unit consists of private land. Possible threats: predation by non-native species, development, and off-road vehicle use. Marin-1, Salmon Creek -- 2,559 acres in north-central Marin County, east of State Highway 1 and north of Point Reyes Petaluma Road. The unit consists entirely of private and local government land. Possible threats: overgrazing of aquatic and riparian habitats and predation by non-native species. Marin-2, Point Reyes Peninsula -- 25,834 acres in western Marin County, west of State Highway 1. The unit consists entirely of Federal land (National Park Service). Possible threats: overgrazing of aquatic and riparian habitats and predation by non-native species. Solano-1, Sky Valley -- 2,844 acres in southwestern Solano County and a portion of extreme southeastern Napa County, south of Interstate 80 and west of Interstate 680. The unit consists of private land. Possible threats: overgrazing of aquatic and riparian habitats, and removal and alteration of habitat due to urbanization. Contra Costa-1, Berkeley Hills -- 4,095 acres in western Contra Costa County, south of Alhambra Valley Road and north of Bear Creek Road. The unit consists of private land and local government land. Possible threats: removal and alteration of habitat due to urbanization, overgrazing of aquatic and riparian habitats, and predation by non-native species. Alameda-1A, Los Vaqueros -- 285 acres in Alameda County, along Vasco Road. The unit consists of private land. Possible threats: overgrazing of aquatic and riparian habitat and predation by non-native species. Alameda-1B, San Antonio Creek -- 533 acres in north-central Alameda County, along Collier Canyon. The unit consists of private land. Possible threats: removal and alteration of habitat due to urbanization, overgrazing of aquatic and riparian habitats, and predation by nonnative species. San Mateo-1A, Cahill Ridge -- 10,398 acres in northwestern San Mateo County, west of Interstate 280 and east of California Route 1. The unit consists of private land and local government land. Possible threats: predation by non-native species. San Mateo-2C, Año Nuevo -- 2,885 acres in extreme northwestern Santa Cruz County. The unit consists of private and State land. Possible threats: predation by non-native species. Santa Clara-1A, Cañada de Pala -- 28,059 acres in northcentral Santa Clara County, south of Sierra Road and west of Mount Hamilton. This unit consists of private and local government land. Possible threats: removal and alteration of habitat due to urbanization, overgrazing of aquatic and riparian habitats, and predation by nonnative species. Santa Clara-1B, Henry Coe State Park -- 29,706 acres in southeastern Santa Clara County, east of Anderson Lake and north of State Highway 152. The unit consists of private and State land. Possible threats: predation by non-native species. Santa Cruz-1, North Coastal Santa Cruz County -- 13,074 acres located along the coastline of Santa Cruz County, from approximately Waddell Creek to Yellow Bank Creek. The unit consists of private and State land. Possible threats: water diversions, which could de-water portions of aquatic habitat and lead to desiccation of egg masses or seasonal loss of aquatic habitat. Santa Cruz-2, Watsonville Slough -- 4,057 acres located along the coastal plain in southern Santa Cruz County, north of the mouth of the Pajaro River and seaward of California Highway 1. The unit consists of private land and Federal land. Possible threats: mortality due to agricultural pollution; conversion of habitat by introduced invasive plants; removal and alteration of aquatic and upland habitat due to urbanization, and predation by non-native species. Merced-1A-B, Pacheco Pass -- 12,176 acres in two sub-units located in southwestern Merced County and a small portion of southeastern Santa Clara County, west of San Luis Reservoir. The unit consists of private and State land. Possible threats: overgrazing of aquatic and riparian habitat and predation by non-native species. Monterey-1, Elkhorn Slough -- 519 acres along the coastal plain in northern Monterey County , inland from the town of Moss Landing . The unit consists of State land. Possible threats: mortality due to agricultural pollution, trematode infestation and chytrid fungus infection; and predation by nonnative species. Monterey-2, Carmel River -- 45, 420 acres about 3 miles south to about 22 miles southeast of the city of Monterey and includes locations in the Carmel River Valley and nearby San Jose Creek. The unit consists of private, State, and Federal land (U.S. Forest Service). Possible threats: removal and alteration of aquatic and upland habitat due to urbanization; de-watering of aquatic habitat due to water pumping and water diversions, and predation by nonnative species. San Benito-1, Hollister Hills -- 14,285 acres in northwestern San Benito County in the foothills of the Gabilan Range . The unit consists of private and State land. Possible threats: removal and alteration of aquatic and upland habitat due to recreational and residential development; off-road vehicular activities, and predation by non-native species. San Benito-2, Paicines Reservoir and Tres Pinos Creek -- 9,616 acres in northwestern San Benito County, approximately 8 miles southeast of the City of Hollister. The unit consists of private and Federal land (Bureau of Land Management). Possible threats: removal and alteration of aquatic and upland habitat due to urbanization, and predation by non-native species. San Benito-3, Pinnacles National Monument -- 20,037 acres in the Gabilan Range at Pinnacles National Monument, about 3.5 miles west of the town of San Benito in southern San Benito County. The unit consists of private and Federal land (National Park Service, BLM). Possible threats: overgrazing and trampling of aquatic and upland habitat by feral pigs; recreational activities, and predation by non-native species. San Luis Obispo-1A-B, Cholame -- 17,787 acres in two subunits in northeastern San Luis Obispo and northwestern Kern Counties . The unit consists of private and Federal land (BLM). Possible threats: highway construction, which may remove upland or aquatic habitat; overgrazing of aquatic and riparian habitats; and de-watering of aquatic habitats due to water diversions. San Luis Obispo-8, Upper Salinas River -- 16,277 acres at the base of Garcia Mountain about 17 miles east of the City of San Luis Obispo. This unit consists of private and Federal land (U.S. Forest Service). Possible threats: alteration of aquatic and upland habitat by recreational activities and predation by non-native species. Santa Barbara-5, Gaviota Creek -- 11,328 acres along the coast in southern Santa Barbara County about 3 miles southwest of the town of Buellton. The unit consists of private, State, and Federal land (U.S. Forest Service). Possible threats: predation by non-native species and water management practices that could negatively affect California red-legged frog aquatic habitat. Populations in this unit may also require special management or protection due to their potential importance in stabilizing populations in tributaries to the Santa Ynez River. Santa Barbara-7, Upper Santa Ynez River -- 32,505 acres in southeastern Santa Barbara County about 5 miles north of the City of Santa Barbara. The unit consists of private and Federal land (U.S. Forest Service). Possible threats: flood control and road maintenance activities that cause siltation or directly remove upland habitat. Ventura-1, Matilija Creek -- 6,660 acres in western Ventura County at Matilija Creek. The unit consists of private and Federal land (U.S. Forest Service). Possible threats: alteration of aquatic and upland habitat by recreational activities and predation by non-native species. Ventura-2, San Antonio Creek -- 2,915 acres in western Ventura County at San Antonio Creek. The unit consists of private land. Possible threats: alteration of aquatic and upland habitat by recreational activities; sedimentation of aquatic habitats, and predation by non-native species. Ventura-3, Piru Creek -- 8,837 acres in eastern Ventura County and northwestern Los Angeles County. The unit consists of private and Federal land (U.S. Forest Service). Possible threats: alteration of aquatic and upland habitat by unauthorized off-road vehicle use; conversion of native habitat by invasive plants, and predation by non-native species. Los Angeles-1, San Francisquito Creek -- 4,231 acres in northwestern Los Angeles County. The unit consists of private and Federal land (U.S. Forest Service). Possible threats: alteration and removal of aquatic and upland habitat by residential development; degradation of habitat by recreational activities; sedimentation of aquatic habitats; conversion of native habitats by invasive plants; contamination by chytrid fungus, and predation by African clawed frogs (Xenopus laevis) and other non-native species, including bullfrogs and non-native fish. |
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