The re-expansion and improving status of the silver-spotted skipper butterfly (Hesperia comma) in Britain:: a metapopulation success story
The re-expansion and improving status of the silver-spotted skipper butterfly (Hesperia comma) in Britain:: a metapopulation success story
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DOI：
10.1016/j.biocon.2005.01.029
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发表时间：
2005-07-01
影响因子：
5.9
通讯作者：
Thomas, CD
中科院分区：
文献类型：
--
作者：
Davies, ZG;Wilson, RJ;Thomas, CD
由于栖息地丧失和破碎化，许多特殊物种正在减少，因此保护行动通常旨在阻止减少速度，而不是带来真正的恢复。在这里，我们记录了一个物种从前种群避难所的恢复情况。 2000 年对整个英国 Hesperia comma 分布范围进行了一项广泛调查，记录的四分体（2 公里 x 2 公里网格）数量是 1982 年的三倍多。与此同时，种群数量增加了四倍，栖息地面积增加了 10 倍。 H.comma状况的改善是良好栖息地管理、兔子种群恢复和气候变暖的结果，这些因素提高了适宜栖息地的质量并增加了可用性。这使得残余的复合种群能够通过依赖于距离的殖民化，通过大型栖息地网络进行扩张。 H. comma 的种群恢复表明景观规模的保护是可以成功的。 (c) 2005 Elsevier Ltd. 保留所有权利。
Many specialist species are declining as a result of habitat loss and fragmentation, such that conservation actions typically aim to stem rates of decline rather than bring about genuine recovery. Here, we document the recovery of a species from former population refuges. An extensive survey of the entire British range of Hesperia comma, conducted in 2000, recorded over three times the number of tetrads (2 km x 2 km grid squares) occupied in 1982. This was accompanied by a fourfold increase in the number of populations and a 10-fold increase in the habitat area occupied. The improving status of H. comma is the product of good habitat management, recovering rabbit populations and climate warming, which have improved the quality, and increased the availability, of suitable habitat. This has enabled remnant metapopulations to expand, via distance-dependent colonisation, through large networks of habitat. Metapopulation recovery in H. comma demonstrates that landscape-scale conservation can be successful. (c) 2005 Elsevier Ltd. All rights reserved.