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Using clique analysis to determine environmental constraints on vegetation composition in the Shoshone National Forest, Wyoming, United States of America
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Using clique analysis to determine environmental constraints on vegetation composition in the Shoshone National Forest, Wyoming, United States of America
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Dissertation
Using clique analysis to determine environmental constraints on vegetation composition in the Shoshone National Forest, Wyoming, United States of America
2001
Overview
Environmental constraints influencing vegetation composition on the Shoshone National Forest, Wyoming, were determined using clique analysis. 939 plots and 32 environmental factors were divided into two perspectives. Clique analysis examines the relationship between vegetation composition and environment by generating sets of plots, called cliques, where each plot has a minimum level of vegetational similarity to every other plot in the clique. The method determines the maximum environmental difference among plots of each clique and calculates the probability of obtaining as small a range of environmental difference in sets of the same size chosen at random. Environmental constraints varied between the two perspectives. A hierarchy of environmental factors was determined, along with the degree of importance within each perspective. Vegetation pattern and composition are influenced by moisture availability driven by the effects of topography. Complex environmental gradients such as elevation and climate were dominate constraints influencing vegetation composition within both perspectives.
Publisher
ProQuest Dissertations & Theses
Subject
ISBN
0493474293, 9780493474298
