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The Effects Of Campgrounds On Small Mammals In Canyonlands And Arches National Parks, Utah, Gregory A. Clevenger

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Campground use in our national parks is increasing yearly, but little quantitative data are available concerning the impact this use is having on the ecology of the campground and surrounding area. This paper reports on some of the effects of campgrounds on small mammal populations in Canyonlands and Arches National Parks, Utah. Data collection consisted of live-trapping from April to November, 1975 (12,337 trap-nights). The populations of Ordls kangaroo rat (Dipodomys ordii), antelope ground squirrels (Ammospermophilus leucurus), deer mice (Peromyscus spp.), woodrats (Neotoma spp.), Colorado chipmunks (Eutamias guadrivittatus), and desert …

Desert Bighorn Sheep In Canyonlands National Park, H. Clay Dean

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The ecology of bighorn sheep in Canyonlands National Park, Utah was investigated between July 1974 and December 1975. Primary objectives of this study were: (1) to determine the distribution and abundance of bighorn sheep in the Park; (2) to examine the effects of human encroachment, and (3) to determine key habitat factors in relation to bighorn sheep movements. Data were collected by ground and aerial surveys.

There were between 60 and 100 bighorn sheep in the Island in the Sky District and between 20 and 30 in the Needles District. Bighorn sheep distribution was closely related to the history of …