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Full-Text Articles in Human Ecology
Assessment Of Atmospheric Nitrogen Deposition: Possible Effects On Alpine Ecosystems Above 9000 Feet In Grand Teton National Park, Jennifer Hansen
Assessment Of Atmospheric Nitrogen Deposition: Possible Effects On Alpine Ecosystems Above 9000 Feet In Grand Teton National Park, Jennifer Hansen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Certain forms of nitrogen (N) in the atmosphere are pollutants with effects that mimic fertilizer application. If there is too much N, it can become a stressor, and the ecosystem may undergo drastic changes (e.g. certain plant species may decline or disappear). The N load at which a system starts exhibiting negative effects is dependent on the type and location of the ecosystem. Alpine ecosystems (i.e. above 9000 feet in Wyoming) may be particularly sensitive to low levels of atmospheric N input because of short growing seasons, sparse plant cover, and shallow soils that limit their ability to absorb the …
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 …