|Total Number of Endemics|
|Source: The Nature Conservancy and Association for Biodiversity Information|
This map depicts the total number of endemics per state in the U.S. The map and text are from the excellent publication entitled "Precious Heritage: The Status of Biodiversity in the United States", by The Nature Conservancy and Association for Biodiversity Information.(fig. 5.1b, pg. 124). Endemic refers to the uniqueness of a species. Endemics are species which are found only in a specific geographic area, such as a state, and no where else. This map highlights the biological significance of California. California harbors almost 1,500 state endemics among the groups of species considered, representing about a quarter (26%) of its biota. Although Hawaii ranks last among sates in the total number of native species, about 1,100 of these are restricted to the archipelago, so it is second only to California in number of endemics. Considered as a proportion of its biota, though, Hawaii's 82% level of endemism among these organisms dwarfs that of any other state. Texas has the third highest number of endemics in the nation, with 301 species restricted to it's geographical environment. Cautions for this Product:
Combining native species of vascular plants, vertebrates, and two invertebrate groups, mussels and crayfish, creates an aggregate data set representing 19,101 species. This map depicts overall patterns which refer only to regularly occurring native species in these plant and animal groups. A great many other species of invertebrates, nonvascular plants, algae, fungi, and microorganisms also are found in these states. However, currently, comprehensive information on these groups, which would enable their inclusion in an analysis of overall state-level diversity patterns, is unavailable.
Map used with permission from The Nature Conservancy and Oxford Press. For Further Information:
"Precious Heritage: The Status of Biodiversity in the United States", B. Stein, L. Kutner and D. Adams, editors. Oxford Press. 2000.