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Document Type

Grand Teton National Park Report

First Page

73

Last Page

74

Abstract

The purpose of the research, begun in 1989, is to ascertain how selectively voles feed, and to assess vegetation as a factor in demographic processes. Microtus longicaudus exhibits relatively stable numbers while M. montanus has dramatic fluctuations in some habitats. The study sites for M. montanus have been chosen to include primary and secondary habitat, and proximate and isolated habitat patches. Vegetation has heretofore not been quantitatively analyzed.

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