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Wyoming Natural Diversity Database

Federal Status

US Fish and Wildlife Service  |  USDA Forest Service  |  USDI Bureau of Land Management

US Fish and Wildlife Service (USFWS)

The Endangered Species Act of 1973 directs the USFWS to identify and protect rare plants and animals. The following categories are currently used to rank listed and candidate species. The candidate system was revised in 1996, eliminating the old category of C2.

Listed Endangered (LE) In danger of extinction. For plants this applies to all of a taxon's range; for animals this may apply to only a portion of a taxon's range
Proposed Endangered (PE) Proposed for listing as Endangered
Listed Endangered (LE), and Endangered - Nonessential Experimental Population (LEXN) Listed Endangered (LE), and Endangered - Nonessential Experimental Population (LEXN):  some populations in the state are Endangered and under the full protection of the Endangered Species Act; others are Endangered but receive lower levels of protection due to their reintroduced, temporary, or otherwise provisional condition
Listed Threatened (LT) Likely to become Endangered in the near future. For plants this applies to all of a taxon's range; for animals this may apply to only a portion of a taxon's range
Proposed Threatened (PT) Proposed for listing as Threatened

Candidate; Warranted but Precluded (C)

(formerly C1)

Existing biological information supports a formal proposal to list as Endangered or Threatened, but developing a listing regulation is precluded by higher priority listing activities.
Delisted, formally monitored (DM) Delisted from Endangered or Threatened status
Proposed for Delisting (PD) Proposed for delisting from existing status.
Not Warranted for Listing (NW) A formal proposal for listing as Endangered or Threatened was recently denied
Petition Under Review (UR) A petition to list as Endangered or Threatened has been received by USFWS and is awaiting USFWS review

 

USDA Forest Service (USFS)

USFS has adopted policies to ensure that agency actions do not drive rare taxa towards listing as Threatened or Endangered under the Endangered Species Act.

USFS Region 2 and Region 4 have developed lists of "Sensitive Species" that warrant special attention on USFS lands (USDA FS 1991, 1994, 2003). Sensitive species are defined as "plant and animal species identified by the Regional Forester for which population viability is a concern as evidenced by: (a) significant current or predicted downward trends in population numbers or density, and/or (b) significant current or predicted downward trends in habitat capability that would reduce a species' existing distribution." Sensitive species are usually designated for an entire region, but independent "Forest Sensitive" lists are maintained by some individual National Forests. The following codes are used to represent sensitive species designations by USFS:

Region 2 Sensitive, R2 or S-USFS R2 In Wyoming, sensitive in Bighorn, Black Hills, Medicine Bow, and Shoshone National Forests, and Thunder Basin National Grassland
Region 4 Sensitive, R4 or S-USFS R4 In Wyoming, sensitive in Bridger-Teton, Caribou, Targhee, Wasatch-Cache, and Ashley (including Flaming Gorge National Recreation Area) National Forests
SOLC Species of Local Concern in the designated National Forest/Grassland

 

USDI Bureau of Land Management (BLM)

BLM has adopted policies to ensure that agency actions do not drive rare taxa towards listing as Threatened or Endangered under the Endangered Species Act.

The BLM Wyoming State Office has established a list of "Sensitive Species" (SSL) warranting special attention on BLM lands (USDI BLM 2001, 2002, 2010). BLM Sensitive species are "species that could easily become endangered or extinct in the state", including (a) species under status review by the FWS/ National Marine and Fisheries Service, (b) species whose numbers are declining so rapidly that Federal listing may become necessary, (c) species with typically small or fragmented populations, and (d) species inhabiting specialized refugia or other unique habitats. The following codes are used to represent sensitive species designations by BLM:

WY BLM SSL or WY On Sensitive Species List in Wyoming (no invertebrate animal species are listed)

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Wyoming Natural Diversity Database

1000 E. University Ave.

Department 3381

Laramie, WY 82071

Phone: 307-766-3023

Email: wyndd@uwyo.edu

1000 E. University Ave. Laramie, WY 82071
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