Effect of sheep grazing and fire on sage grouse populations in southeastern Idaho

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• 作者：Pedersen ; E.K. ; Connelly ; J.W. ; Hendrickson ; J.R. ; Grant ; W.E.
• 关键词：Fire ; Grazing ; Idaho ; Sage grouse ; Sagebrush ; Sheep ; Simulation modeling
• 刊名：Ecological Modelling
• 出版年：2003
• 出版时间：July 1, 2003
• 年：2003
• 卷：165
• 期：1
• 页码：23-47
• 全文大小：678 K

文摘

This paper describes the development, evaluation, and use of a model that simulates the effect of grazing and fire on temporal and spatial aspects of sagebrush community vegetation and sage grouse population dynamics. The model is represented mathematically as a discrete-time, stochastic compartment model based on difference equations with a time interval of 1 week. In the model, sheep graze through sage grouse breeding habitat during spring and fall, and different portions of the area can burn at different frequencies, creating a habitat mosaic of burned and unburned areas.