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Full-Text Articles in Human Ecology
Exploring A Stable Aspen Niche Within Aspen-Conifer Forests Of Utah, Cody M. Mittanck
Exploring A Stable Aspen Niche Within Aspen-Conifer Forests Of Utah, Cody M. Mittanck
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This study addresses a critical issue faced by resource managers confronting aspen restoration projects in the Intermountain West. Quaking aspen (Populus tremuloides Michx.) forests have received a large amount of popular and academic attention over the last decade due to concerns over decline. As a result, both private and public forest resource managers have focused attention on actively restoring aspen communities through treatments such as prescribed burning, logging, and grazing exclosures to name a few. There is increasing evidence suggesting the existence of "stable" aspen communities. This community type undergoes processes entirely different from successional aspen communities and …
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 …