|Scientific Name:||Lemmus trimucronatus|
|Species Authority:||(Kerr, 1792)|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Reviewer(s):||Amori, G. (Small Nonvolant Mammal Red List Authority) & Tsytsulina, K. (Global Mammal Assessment Team)|
Common and widely distributed.
|Range Description:||Widely distributed in northern North America from Alaska east to Baffin Island and south (in the west) to central British Columbia and (further east) to northern Manitoba. In Old World distributed in tundra to Kolyma in the west (Russian Federation). Several specimens found outside tundra, in middle Anadyr and Paren' Rivers, and lower Penzhina and Gizhiga Rivers.|
Native:Canada; Russian Federation; United States
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||Populations highly variable, cycling on a 3-4 year basis. Populations lows may drop to <1/ha and peak densities may reach 150-200/ha.|
|Habitat and Ecology:||Inhabit either arctic tundra or subarctic alpine tundra above tree line. Feeds on lings, cotton grass, some cereals and green mosses (Pleurosium, Polythrichum).|
|Major Threat(s):||No major threats.|
|Conservation Actions:||Occurs in some protected areas. Considered "secure" (S5) in British Columbia, but "critically imperiled" (S1) in Alberta. Not ranked at the species level in Alaska or in other Canadian provinces/territories. One subspecies of concern in North America: L. s. nigripes (S3 in Alaska).|
Wilson, D. E. and Ruff, S. 1999. The Smithsonian Book of North American Mammals. Smithsonian Institution Press, Washington, DC, USA.
|Citation:||Linzey, A.V. 2008. Lemmus trimucronatus. The IUCN Red List of Threatened Species. Version 2015.2. <www.iucnredlist.org>. Downloaded on 02 September 2015.|
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