3 Methods and Data Sources

Data on the status of threatened or endangered vertebrate species of the South were compiled from the U. S. Department of the Interior (2000). That Agency provided information on the distribution of listed species by State. Its recovery plans and other Agency publications were used to compile information on life history, ecology, and management of individual species.

Regional species richness in each vertebrate taxa were compiled from State Natural Heritage Offices (NatureServe 2000). This database is an inventory of all known occurrences for species of conservation concern. Information was derived from the database to determine geographic patterns of diversity by State in the South. The system was also used to verify the status and distribution of species included in the fauna accounts.

Information on bird habitat associations was obtained from Partners in Flight (2000) conservation plans. These plans highlight the factors that imperil bird species in physiographic areas and recommend management actions. The conservation plans were used to identify species of conservation concern (Pashley and others 2000).

Habitat associations for herpetofauna (reptiles and amphibians) were summarized from the comprehensive review conducted by Wilson (1995). Additional literature reviews and reference materials supplied information on reptile and amphibian ecology.

State agency bear biologists were surveyed for information about the current status, habitat needs, and management concerns about black bears. Nine States responded with information: Alabama, Arkansas, Florida, Kentucky, Mississippi, North Carolina, Oklahoma, Texas, and Virginia.

Information on mammal habitat relationships was compiled from extensive literature searches, field guides, and texts on southern wildlife. Research stations and universities throughout the South were contacted to obtain additional information on selected species.