Beyond use versus availability: behaviour-explicit resource selection
Beyond use versus availability: behaviour-explicit resource selection
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超越使用与可用性：行为显式资源选择
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
E. Gese
中科院分区：
文献类型：
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作者：
R. Wilson;Lynne Gilbert;E. Gese
资源选择研究在野生动物生态学文献中很常见，通常依赖于野生动物使用的地点和假定可供使用但未观察到使用的地点的比较。虽然标准的利用-可利用性设计有助于建立物种发生的一般模式，但它们在帮助研究人员理解导致观察到的空间利用模式的潜在行为机制方面的能力有限。基于对怀俄明州黄石国家公园土狼（Canis latrans）的空间显性行为观察，我们估计了特定行为（即捕食、产卵和旅行）和所有使用地点的资源选择，而不考虑行为，以测试资源选择是否具有行为特异性，是否具有跨行为的普遍性。特定于行为的模型与不按行为划分的模型有显著不同。特别是，掠食性模型确定了先前有文献记载的具有高小型哺乳动物丰度的介色草甸的选择。而非分区模式则回避了这种植被类型。我们的研究结果表明，资源选择在不同的行为之间是不同的，并且表明用于估计资源选择的标准技术对于理解空间使用的潜在行为机制可能用处有限。未来的研究应继续改进将遥测项圈获得的精细尺度运动数据划分为代表不同行为的离散运动回合的方法。
Resource selection studies are common in the wildlife ecology literature and typically rely on the comparison of locations used by wildlife and locations assumed to be available for use but where use was not observed. While standard use-availability designs are helpful for establishing general patterns of species occurrence, they are limited in their ability to help researchers understand the underlying behavioural mechanisms that lead to observed space-use patterns. Based on spatially-explicit behavioural observations from coyotes Canis latrans in Yellowstone National Park, Wyoming, we estimated resource selection for specific behaviours (i.e. predatory, laying and travelling) and for all used locations irrespective of behaviour, to test whether resource selection is behaviour-specific and not generalizable across behaviours. Behaviour-specific models differed significantly from the model not partitioned by behaviour. In particular, the predatory model identified selection for mesic-meadows which have previously been documented to have high small-mammal abundance. The non-partitioned model, however, showed avoidance of this vegetation type. Our results show that resource selection differs between behaviours and suggest that standard techniques for estimation of resource selection might be of limited use for understanding the underlying behavioural mechanisms of space use. Future research should continue to improve on methods for partitioning fine-scale movement data obtained from telemetry collars into discrete movement bouts representative of different behaviours.