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The Effects Of Elevation And Vegetation Type On Snow Accumulation And Melt In Logan Canyon, Utah, Paul R. Thies
The Effects Of Elevation And Vegetation Type On Snow Accumulation And Melt In Logan Canyon, Utah, Paul R. Thies
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Snow accumulation and melt characteristics were studied in Logan Canyon, Utah. Three replications of aspen, conifer, and open field types at 6300, 7100,and 8000 feet were measured for snow depth and water content during 1972. Elevation was found to have the greatest effect on snow water content. The gradient of increasing water content with rise in elevation was found to be .51 inches/100 feet in the zone from 6300 to 7100 feet and 1.9 inches/100 feet from 7100 to 8000 feet. The cooler temperatures at higher elevations partially account for the 8000 foot zone beginning to melt 40 days after …
Breeding Bird Populations And Habitat Utilization In Aspen Stands Of Upper Logan Canyon, Janet L. Young
Breeding Bird Populations And Habitat Utilization In Aspen Stands Of Upper Logan Canyon, Janet L. Young
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Censuses of two 20-acre plots in upper Logan Canyon, Utah, were made by the spot-mapping method during 1970 and 1971 to determine the differences in composition and density of breeding-bird populations in aspen stands of significantly different density and stature. The less dense stand of greater average d.b.h., average height and per cent ground cover had 20 breeding species totalling 615 pairs per 100 acres (expressed as equivalent territories). The more dense stand of smaller trees and brushy undergrowth had 14 breeding species with 267.5 equivalent territories per 100 acres. Nine species were found on both areas. Observations of foraging …