Date of Award:

5-1978

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Biology

Department name when degree awarded

Biology (Ecology)

Committee Chair(s)

James A. MacMahon

Committee

James A. MacMahon

Committee

Martyn Caldwell

Committee

Arthur Holmbren

Committee

Jan Henderson

Committee

Neil West

Abstract

Twenty-six sedge-dominated sites in the Uinta Mountains of northeastern Utah were studied. These sites could be placed into two categories, wetland sites (those with water-saturated soils) and alpine tundra sites.

The alpine sites had above-ground standing crops between 37 and 206 g/m2. The soils were sandy and low in nutrients. Indirect gradient analysis of the alpine sites showed a relationship between soil stability and vegetation. No other factors were found to be related to overall vegetation patterns.

The wetland sites were dominated by different Carex species than the alpine sites. These wetlands were often patches of monotypic stands. Above-ground standing crop values ranged from 28 360 g/m2 and were strongly dependent upon the stagnation of the water on the site.

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