Ricketts, Y. Kura, J.F. Lamoreux, W.W. Wettengel, P. Hedao, and K.R. Kassem. Terrestrial Ecoregions of the World: A New Map of Life on Earth (PDF, 1.1M) BioScience 51:933-938. Number of Endemic: of Endemic: The number of terrestrial endemic species refers to the number of endemic mammals, birds, and reptiles in each terrestrial ecoregion. Data was compiled on endemic species by querying the WWF WildFinder database for their occurrences by ecoregion. The WWF WildFinder database is a spatially explicit online database of vertebrate species occurrences by ecoregion. Citation: Terrestrial Endemic Species Richness by ecoregion: World Wildlife Fund (WWF). 2006. WildFinder: Database of species distributions, ver. Jan-06. Available at www.gis.wwf.org/WildFinder Number of Mammals: of Mammals: Data was compiled on terrestrial mammals by querying the WWF WildFinder database for species occurrences by ecoregion. The WWF WildFinder database is a spatially explicit online database of vertebrate species occurrences by ecoregion. Citation: Mammal Species Richness by ecoregion: World Wildlife Fund (WWF). 2006. WildFinder: Database of species distributions, ver. Jan-06. Available at www.gis.wwf.org/WildFinder Number of Birds: of Birds: Data was compiled on terrestrial birds by querying the WWF WildFinder database for species occurrences by ecoregion. The WWF WildFinder database is a spatially explicit online database of vertebrate species occurrences by ecoregion. Citation: Bird Species Richness by ecoregion: World Wildlife Fund (WWF). 2006. WildFinder: Database of species distributions, ver. Jan-06. Available at www.gis.wwf.org/WildFinder. Number of Plants: of Plants: Kier et al. (2005) estimated the number of plant species in each terrestrial ecoregion. Citation: Plant Species Richness by ecoregion: Kier, G., J. Mutke, E. Dinerstein, T. H. Ricketts, W. Ku, H. Kreft, and W. Barthlott. 2005. Global patterns of plant diversity and floristic knowledge. Journal of Biogeography 32: 1107-1116. Plant hardiness zones: The Plant Hardiness images were generated by Jay Schlegel of ZedX Inc, using two sources of weather data for the NCSU APHIS Plant Pest Forecast System. One source is the International Program on Climate Change (IPCC) 1973-2002 monthly data consisting of maximum and minimum temperatures and precipitation (New et al., 1999). The second source is the Daily Global Historical Climatology Network (GHCND) station data that contains daily values of maximum and minimum temperature and precipitation for more than 33,000 locations worldwide (Peterson and Vose, 1997). Citation: NAPPFAST Global Plant Hardiness Zones. July, 2007. North Carolina State University APHIS Plant Pest Forecasting System, . Soils of the World: of the World: Soil information, from the global to the local scale, has often been the one missing biophysical information layer, the absence of which has added to the uncertainties of predicting potentials and constraints for food and fiber production. The lack of reliable and harmonized soil data has considerably hampered land degradation assessments, environmental impact studies and adapted sustainable land management interventions. Recognizing the urgent