World Wildlife Fund Terrestrail Conservation Status
Source: "Terrestrial Ecoregions of North America: A Conservation Assesment" Fig. 4.3 pg. 72, by World Wildlife Fund and Island Press
Map Description:
Using mapped habitat information, satellite data, and expert opinion as guides, the World Wildlife Fund (WWF) developed a threat analysis for each ecoregion. This map is from the publication entitled "Terrestrial Ecoregions of North America: A Conservation Assessment, fig. 4.3 pg. 72, which is is an excellent resource for assessing the status and trends of biodiversity. For instance, the Central Tall Grasslands (60), Northern Mixed Grasslands (56) and the Central and Southern Mixed Grasslands (64) are critical areas that need biodiveristy protection and restoration. For a detailed description of the threat analysis refer to the publication below.

Cautions for this Product:
This map is copyrighted by Island Press and World Wildlife Fund. Map used with permission.

For Further Information:
"Terrestrial Ecoregions of North America: A Conservation Assessment" by T.H. Ricketts, E. Dinerstein, D.M. Olson, C.J. Loucks et al.,1999. Island Press.