A large-scale deforestation experiment: Effects of patch area and isolation on Amazon birds
A large-scale deforestation experiment: Effects of patch area and isolation on Amazon birds
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DOI：
10.1126/science.1133097
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发表时间：
2007-01-12
期刊：
影响因子：
56.9
通讯作者：
Lovejoy, Thomas E.
中科院分区：
文献类型：
--
作者：
Ferraz, Goncalo;Nichols, James D.;Lovejoy, Thomas E.
与广大的毗连区相比，孤立的小生境斑块缺乏许多物种。一些物种在隔离后消失；另一些物种则很少在任何小块土地上发现，无论隔离与否。我们使用了13年来在巴西亚马逊森林进行的大型景观操纵实验中捕获的鸟类的数据集，对55个物种的灭绝-殖民动态进行了建模，并测试了岛屿生物地理学和集合种群理论的基本预测。从我们的模型中，我们得到了物种对隔离度和斑块面积变化易感性的两个度量。我们发现，面积的强烈影响和隔离的可变效应对鸟类预测的斑块占用情况有影响。
As compared with extensive contiguous areas, small isolated habitat patches lack many species. Some species disappear after isolation; others are rarely found in any small patch, regardless of isolation. We used a 13-year data set of bird captures from a large landscape-manipulation experiment in a Brazilian Amazon forest to model the extinction-colonization dynamics of 55 species and tested basic predictions of island biogeography and metapopulation theory. From our models, we derived two metrics of species vulnerability to changes in isolation and patch area. We found a strong effect of area and a variable effect of isolation on the predicted patch occupancy by birds.