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Indicators of red squirrel (Tamiasciurus hudonicus) abundance in the whitebark pine zone

Great Basin Naturalist

By:
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Abstract

We investigated occupied squirrel middens and squirrel sightings and vocalizations as indicators of red squirrel (Tamiasciurus hudsonicus) abundance in the high-elevation whitebark pine (Pinus albicaulis) zone. Data were collected 1984-1989 from line transects located on 2 study sites in the Yellowstone ecosystem. We evaluated the performance of each measure on the basis of precision and biological considerations. We concluded that, of the 3 measures, active middens were the best indicator of red squirrel abundance. We also observed that the density of active middens dropped by 48%-66% between 1987 and 1989, following a severe drought and extensive wildfires that burned one of the study sites during 1988.

Additional publication details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Indicators of red squirrel (Tamiasciurus hudonicus) abundance in the whitebark pine zone
Series title:
Great Basin Naturalist
Volume:
56
Issue:
3
Year Published:
1996
Language:
English
Publisher:
Monte L. Bean Life Science Museum, Brigham Young University
Contributing office(s):
Forest and Rangeland Ecosystem Science Center
Description:
p. 272-275
First page:
272
Last page:
275