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Brown bear (Ursus arctos) body size, condition, and productivity in the Arctic, 1977-2016

机译:1977-2016年北极熊(Ursus arctos)的体型,状况和生产力

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The Arctic is generally warming with lengthening growing seasons that can influence individuals, populations, and communities. However, temperature data indicate that the changes are largely local and variable. We compared body size, body condition, and productivity among four Arctic brown bear (Ursus arctos) studies separated in time and space from 1977 to 2016. As body size, condition, and productivity varied among populations, local conditions, both biotic and abiotic, appear to influence the size, condition, and productivity of individual bears and, thus, bear populations. We conclude that current local studies are critical in informing management decisions, because extrapolations from concurrent adjacent studies or reliance on past local studies may not represent the present condition of an Arctic brown bear population.
机译:北极通常随着变长的生长季节而变暖,这会影响个人,人口和社区。然而,温度数据表明变化很大程度上是局部的和可变的。我们比较了从1977年至2016年在时间和空间上分开进行的四次北极棕熊(Ursus arctos)研究的体型,身体状况和生产力。由于种群,条件和生产力因种群,当地条件(生物和非生物)而异,似乎会影响单个熊的大小,状况和生产力,从而影响熊种群。我们得出结论,当前的本地研究对于决定管理决策至关重要,因为并发相邻研究的推断或对过去本地研究的依赖可能并不代表北极棕熊种群的当前状况。

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