| Autor: |
Sells, Sarah N., Mitchell, Michael S., Nowak, J. Joshua, Lukacs, Paul M., Anderson, Neil J., Ramsey, JENnifer M., Gude, Justin A., Krausman, Paul R. |
| Předmět: |
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| Zdroj: |
Journal of Wildlife Management; Feb2015, Vol. 79 Issue 2, p195-210, 16p |
| Abstrakt: |
ABSTRACT Pneumonia epizootics are a major challenge for management of bighorn sheep ( Ovis canadensis) affecting persistence of herds, satisfaction of stakeholders, and allocations of resources by management agencies. Risk factors associated with the disease are poorly understood, making pneumonia epizootics hard to predict; such epizootics are thus managed reactively rather than proactively. We developed a model for herds in Montana that identifies risk factors and addresses biological questions about risk. Using Bayesian logistic regression with repeated measures, we found that private land, weed control using domestic sheep or goats, pneumonia history, and herd density were positively associated with risk of pneumonia epizootics in 43 herds that experienced 22 epizootics out of 637 herd-years from 1979-2013. We defined an area of high risk for pathogen exposure as the area of each herd distribution plus a 14.5-km buffer from that boundary. Within this area, the odds of a pneumonia epizootic increased by >1.5 times per additional unit of private land (unit is the standardized % of private land where global [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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