Ponds Gap Analysis: San Francisco Bay Area, California, 2011

Description:

This polygon shapefile depicts pond areas data compiled from the National Wetlands Inventory (NWI) and the National Hydrography Dataset (NHD). The type field used for NWI is "freshwater ponds" and NHD is "lake or pond." Ponds are key habitats for several target species (California red-legged frog, California tiger salamander, and Western/Northwestern pond turtle), so it is important to include a large number of ponds in the Conservation Lands Network. The absolute number of ponds for each landscape unit is assumed to be a first-order determinant of potential metapopulation persistence. To evaluate whether the Coarse Filter Conservation Lands Network included a sufficient number of ponds as well as networks of ponds in each landscape unit, a gap analysis of the nine county San Francisco Bay Area Region, California freshwater ponds was conducted. The gap analysis also allowed for the assessment of local needs for supporting viable metapopulations (spatially separated subpopulations) of pond-dependent conservation targets. The gap analysis identified ponds that fall within currently protected lands (BPAD 2010) and the Coarse Filter Conservation Lands Network and was used during the Amphibian, Reptile, and Invertebrate Project Team. This dataset was developed/compiled for use in the San Francisco Bay Area Upland Habitat Goals Project, a Project used to identify a Conservation Lands Network (CLN) for biodiversity preservation to inform conservation investments and lasting cooperative conservation partnerships. The Conservation Lands Network GIS Database is the primary output of the Project. The data depicts the spatially explicit CLN that is recommended for the nine county San Francisco Bay Area Region, California. Bay Area Open Space Council, GreenInfo Network, Conservation Lands Network, and San Francisco Bay Area Upland Habitat Goals Project. (2011). Ponds Gap Analysis: San Francisco Bay Area, California, 2011. Bay Area Open Space Council. Available at http://purl.stanford.edu/mb821pm2174. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

Resource Link:

https://purl.stanford.edu/mb821pm2174

Identifier:

https://purl.stanford.edu/mb821pm2174

Language:

English

Creator:

Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm)

Publisher:

Bay Area Open Space Council

Provider:

Stanford

Resource Class:

Datasets

Subject:

Gap analysis (Planning), Hydrography, Bodies of water, Ponds, Lakes, Environment, Inland Waters, and Planning and Cadastral

Temporal Coverage:

2011

Date Issued:

2011

Spatial Coverage:

San Francisco Bay Area (Calif.), Alameda County (Calif.), Contra Costa County (Calif.), Marin County (Calif.), Napa County (Calif.), San Francisco County (Calif.), San Mateo County (Calif.), Santa Clara County (Calif.), Solano County (Calif.), and Sonoma County (Calif.)

Access Rights:

Public

Format:

Shapefile