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1. 1:1,000,000-Scale National Wilderness Preservation System of the United States, 2014
2014. National Atlas of the United States. This polygon shapefile consists of National Wilderness Preservation System areas of 320 acres or more, in the United States, Puerto Rico, and the U... National Atlas of the United States.
2. Amphibian and Reptile Specimen Provenances: San Francisco Bay Area, California, 2011
2011. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). The University of California, Berkeley Museum of Vertebrate Zoology (MVZ) collection of amphibians and reptiles contains over 265,000 catalogued sp... Bay Area Open Space Council.
3. Aquaculture, Northeast United States, 2014
2013. SeaPlan. This polygon shapefile represents aquaculture regions in the northeastern United States. Aquaculture in the northeast region is a diverse, vibrant ... Northeast Ocean Data.
4. Bailey's Ecoregions and Subregions of the United States, 2004
2004. United States. Forest Service. This polygon shapefile is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.... National Atlas of the United States.
5. Breeding Bird Survey Route Locations for Lower 48 States, 1966-1998
1966. Patuxent Wildlife Research Center. This line shapefile portrays the current routes used for conducting Breeding Bird Surveys in the lower 48 States. This layer is part of the 1997-20... National Atlas of the United States.
6. Breeding Birds (Blocks): San Francisco Bay Area, California, 2002
2002. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts field observations of where each bird species nests within the nine county San Francisco Bay Area Region, California... Bay Area Open Space Council.
7. Brush Mouse Range (Reverse Polygon Mask): San Francisco Bay Area, California, 2008
2008. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts the range map the Brush Mouse (Peromyscus boylii) that were pulled out and then reversed so the polygon represents a... Bay Area Open Space Council.
8. Buffalo Distribution: Kenya, 1994-1996
1994. International Livestock Research Institute. This polygon shapefile portrays the spatial distribution of buffalo numbers observed in Kenya from 1994 to 1996. Wildlife counts came from a rangel... International Livestock Research Institute.
9. California Coastal Marshes, 2000
2000. California. Department of Fish and Game. Marine Resources Region. This polygon shapefile was derived from the National Oceanic and Atmospheric Administration Coastal Change Analysis Program's Southern Coastal Cali... California. Department of Fish and Game. Marine Resources Region.
10. Causes of Forest Fragmentation in the United States (270 Meter Resolution), 1992
1992. Wade, Tim. This raster image is a 270-meter resolution grid map of the conterminous United States in GeoTIFF format, created from National Land Cover Data (NL... National Atlas of the United States.