Global warming and effects on the arctic fox
Global warming and effects on the arctic fox
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DOI：
10.3184/003685008x327468
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发表时间：
2008-01-01
期刊：
影响因子：
2.1
通讯作者：
Ims, Rolf Anker
中科院分区：
文献类型：
--
作者：
Fuglei, Eva;Ims, Rolf Anker
我们预测全球变暖对北极狐的影响。北极地区唯一特有的陆生食肉哺乳动物。我们强调沿海和内陆北极狐种群之间的差异。内陆狐狸依靠大量的旅鼠猎物来维持种群的生存。在短期内，温暖的冬天导致旅鼠错过了繁殖的高峰期，减少了北极狐成功繁殖的机会。然而，从长远来看，温暖的气候将提高植物的生产力，并为来自南方的竞争优势捕食者提供更多的食草动物猎物。赤狐已经侵入了北极地区，造成了北极狐分布范围南侧的退缩。沿海北极狐，依赖于更丰富和暂时稳定的海洋补贴，将不太容易受到气候引起的资源限制。事实上，随着海冰面积的减少，北极岛屿受到保护，免受南方物种的入侵，可能成为沿海北极狐种群的最后避难所。
We predict the effect of global warming oil the arctic fox. the only endemic terrestrial predatory mammals in the arctic region. We emphasize the difference between coastal and inland arctic fox populations. Inland foxes rely, oil peak abundance of lemming prey to sustain viable populations. In the short-term, warmer winters result in missed lemming peak years and reduced opportunities for successful arctic fox breeding. In the long-term, however, warmer climate will increase plant productivity and more herbivore prey for competitive dominant predators moving in from the south. The red fox has already intruded the arctic region and caused a retreat of the southern limit of arctic fox distribution range.Coastal arctic foxes, which rely on the richer and temporally stable marine subsidies, will be less prone to climate-induced resource limitations. Indeed, arctic islands, becoming protected from southern species invasions as the extent of sea ice is decreasing, may become the last refuges for coastal populations of arctic foxes.