Habitat split and the global decline of amphibians
Habitat split and the global decline of amphibians
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DOI：
10.1126/science.1149374
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发表时间：
2007-12-14
期刊：
影响因子：
56.9
通讯作者：
Prado, Paulo Inacio
中科院分区：
文献类型：
--
作者：
Becker, Carlos Guilherme;Fonseca, Carlos Roberto;Prado, Paulo Inacio
两栖动物在全球范围内的减少归因于几个原因，特别是栖息地的丧失和疾病。我们确定了另一个因素，即“栖息地分裂”-定义为人类引起的一个物种不同生活史阶段所使用的栖息地之间的断开-这迫使森林相关的两栖动物与水生幼虫在合适的水生和陆生栖息地之间进行冒险的繁殖迁移。在巴西大西洋森林，我们发现，栖息地分裂的水生幼虫，但不丰富的物种与陆地发展（后者可以完成其生命周期内的森林遗迹）的物种的丰富性产生负面影响。这种机制有助于解释为什么水生幼虫的物种具有最高的种群下降率。这些发现加强了河岸植被的保护和恢复的必要性。
The worldwide decline in amphibians has been attributed to several causes, especially habitat loss and disease. We identified a further factor, namely "habitat split"- defined as human- induced disconnection between habitats used by different life history stages of a species- which forces forest- associated amphibians with aquatic larvae to make risky breeding migrations between suitable aquatic and terrestrial habitats. In the Brazilian Atlantic Forest, we found that habitat split negatively affects the richness of species with aquatic larvae but not the richness of species with terrestrial development ( the latter can complete their life cycle inside forest remnants). This mechanism helps to explain why species with aquatic larvae have the highest incidence of population decline. These findings reinforce the need for the conservation and restoration of riparian vegetation.