Defenders of Wildlife http://www.defenders.org/

California Rangeland Conservation Coalition http://www.carangeland.org/

USGS Landcover Trends Project http://landcovertrends.usgs.gov/

USGS LandCarbon Project http://www.usgs.gov/climate_landuse/land_carbon/

California Landscape Concervation Cooperative http://californialcc.org

USGS Western Geographic Science Center http://geography.wr.usgs.gov/