Carrying Capacity of Age-Specific Habitat Zones within Black-Tailed Prairie Dog Colonies: A Baseline Preceding Black-Footed Ferret Reintroduction
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منابع مشابه
Spatial Optimization of Prairie Dog Colonies for Black-Footed Ferret Recovery
A discrete-time reaction-diffusion model for black-footed ferret release, population growth, and dispersal is combined with ferret carrying capacity constraints based on prairie dog population management decisions to form a spatial optimization model. Spatial arrangement of active prairie dog colonies within a ferret reintroduction area is optimized over time for maximum expected adult ferret p...
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We examined several characteristics of black-tailed prairie dog (Cynomys ludovicianus) colonies in Phillips County, Montana, including slope, aspect, soils, land tenure, and distance from roads using a geographic information system (GIs). Colonies exhibited significantly smaller slopes, but not significantly different aspects than did randomly located polygons. In addition, colonies were more p...
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A spatial optimization model was formulated and used to maximize black-tailed prairie dog populations in the Badlands National Park and the Buffalo Gap National Grassland in South Dakota. The choice variables involved the strategic placement of limited additional protected habitat. Population dynamics were captured in formulations that reflected exponential population growth combined with the r...
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Captive breeding is increasingly being used to create supplies of endangered animals for release into natural habitats, but rearing strategies vary and debates arise over which methods are most ecient. We assessed postrelease behaviors and survival of three groups of black-footed ferrets, each with dierent prerelease experience. Eighteen ferret kits 60 days of age were moved with their dams f...
متن کاملEnzootic plague reduces black-footed ferret (Mustela nigripes) survival in Montana.
Black-footed ferrets (Mustela nigripes) require extensive prairie dog colonies (Cynomys spp.) to provide habitat and prey. Epizootic plague kills both prairie dogs and ferrets and is a major factor limiting recovery of the highly endangered ferret. In addition to epizootics, we hypothesized that enzootic plague, that is, presence of disease-causing Yersinia pestis without any noticeable prairie...
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