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Evaluation of Habitat Suitability Models for Elk and Cattle: Author: Hohler, Deborah Dorothea; Date: 2004-05-15; Program: Animal and Range Sciences; Abstract: Managing elk (Cervus elaphus nelsoni) and cattle habitats in the western United States is confounded by the complex interactions of these species and by diverse private and public land management goals. Managers often use quantitative models as tools in land resource management yet many of these models have not been validated. I evaluated modified versions of existing elk and cattle habitat suitability index (HSI) models on four ranches in Montana and Wyoming to evaluate their ability to predict feeding site selections on non forested habitats. Animal locations were determined from aerial surv...; Download File | View full details

Map-based Tests on Controls of Anabranch River Character on the Lower Yellowstone River: Author: Jenkins, Patricia Ann; Date: 2007-12-15; Program: Earth Sciences; Abstract: Processes responsible for the formation of anabranched river systems are poorly understood. The Yellowstone River, Montana, is a major unimpounded river with over 800 km of anabranched channel. There are from one to seven channels per reach. Current literature identifies at least seven variables that may influence anabranch river character: tributary junctions, bedrock lithology, vegetation, sediment pulses, debris/ice jams, water loss from stream (to groundwater or irrigation withdrawal) and tectonism. Two variables, tributary junctions, bedrock lithology (measured by relative bedrock hardnes...; Download File | View full details