Sources

 These words and phrases, and their definitions, are taken from the Engineering Field Handbook (EFH), Part 650, Revised 1/92; the Code of Federal Regulations (CFR), U.S. Fish and Wildlife Service, Interior, Part 50, Revised October 1, 1998; the Federal Wildlife Laws Handbook, Endangered Species Act, 16 U.S. Code (USC) 1531, Selected Definitions (ESA 3); various United States Department of Interior and United States Department of Agriculture agency documents that include definitions; United Nations and World Bank glossaries of terms and definitions; and all other government and non-governmental documents are included by reference.

 This has been compiled to give you a heads-up on language that has been used by the Department of the Interior and other government entities, both foreign and domestic, and non-governmental entities.