Recovery plan for the northern Idaho ground squirrel (Spermophilus brunneus brunneus)

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The northern Idaho ground squirrel (Spermophilus brunneus brunneus [Urocitellus brunneus]) was federally listed as a threatened species on April 5, 2000 (U.S. Fish and Wildlife Service 2000a). This subspecies is known to exist only in Adams and Valley Counties of western Idaho. The entire range of the subspecies is about 32 by 108 kilometers (20 by 61 miles), and as of 2002, 34 of 40 known population sites were extant. The subspecies declined from an estimated 5,000 individuals in 1985, to less than 1,000 by 1998, when it was proposed for listing under the Endangered Species Act of 1973, as amended. The 1985 estimate was made for populations judged to be in decline. By the year 2000, preliminary surveys indicated that only about 350 individuals remained at known population sites. Based on more extensive census data collected in the spring of 2002, the population was estimated to be 450 to 500 animals. This revised estimate was the result of more intensive monitoring, habitat enhancement measures, and discovery of new populations. In this plan, biological and life history information for the species is discussed, as well as recovery plan objectives, recovery criteria, and recovery strategy.

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ELECTRONIC FILE - Zoology

Recommended citation: U.S. Fish and Wildlife Service. 2003. Recovery Plan for the Northern Idaho Ground Squirrel (Spermophilus brunneus brunneus). Portland, Oregon. 68 pp.

This document is currently available at http://permanent.access.gpo.gov/lps81484/030916b.pdf and http://ecos.fws.gov/docs/recovery_plan/030916b.pdf.

SWAP (2/19/2016) citation: [FWS] US Fish and Wildlife Service. 2003. Recovery plan for the northern Idaho ground squirrel (Spermophilus brunneus brunneus). Portland (OR): US Fish and Wildlife Service. 68 p. [accessed 2015 Jun 01]. http://permanent.access.gpo.gov/lps81484/030916b.pdf