SFPUC 2001 Alameda Watershed Management Plan

III. ENVIRONMENTAL SETTING AND IMPACTSE. NATURAL RESOURCESTABLE III.E-2ALAMEDA WATERSHED WILDLIFE HABITATSWildlife HabitatNatural Plant CommunityMixed Evergreen Forest / Coastal Oak WoodlandValley Oak WoodlandBlue Oak WoodlandWillow Riparian ForestCoast Live Oak RiparianWhite Alder Riparian ForestSycamore Alluvial WoodlandCoastal ScrubMixed ChaparralChamise ChaparralSerpentine GrasslandPerennial GrasslandAnnual GrasslandFresh Emergent WetlandRiverineLacustrinePastureMixed Evergreen Forest / Coast Live Oak WoodlandValley Oak WoodlandBlue Oak WoodlandCentral Coast Arroyo Willow Riparian ForestCentral Coast Live Oak Riparian ForestWhite Alder Riparian ForestSycamore Alluvial WoodlandNorthern Coastal ScrubMixed ChaparralChamise ChaparralSerpentine Bunchgrss GrasslandValley needlegrass GrasslandNon-native GrasslandCoastal and Valley Freshwater Marsh(None)Pond or ReservoirCultivatedSOURCE: Environmental Science Associates, 1994squirrels, such as fox and gray squirrels, which nest and forage in this habitat. Mule deer feed onyoung oak shoots and acorns during the winter. California tiger salamanders could occur in thishabitat type wherever there is seasonal ponding from winter rains.Blue oak woodland grows on northeast-facing slopes that are dry or well drained, andinterdigitates with a variety of other habitats. This habitat offers the same foraging and nestingresources as do other oak woodlands.Willow riparian occurs along the eastern edge of San Antonio Reservoir and elsewhere alongshorelines and streams. Willow riparian is a moist-to-wet habitat type, with high primaryproductivity. Decay organisms and larvae in the damp litter feed insects and other small animals,which in turn support a complex food web. This habitat is important breeding habitat foramphibians such as California tiger salamander and California red-legged frog. The physicalstructure of the trees provide a protected travel corridor between aquatic and upland habitattypes, and is an important feeding and resting place for resident and migratory birds. Warblersand black phoebes are common insect-eating birds that use the willows for feeding and nesting.NOP 96.223E: Alameda Watershed Management Plan III.E-12 ESA / 930385January 2001