Are invasive species the drivers of ecological change?
Are invasive species the drivers of ecological change?
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DOI：
10.1016/j.tree.2005.07.006
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发表时间：
2005-09-01
影响因子：
16.8
通讯作者：
Gemmell, NJ
中科院分区：
文献类型：
--
作者：
Didham, RK;Tylianakis, JM;Gemmell, NJ
入侵物种被广泛认为是生物多样性丧失的主要直接原因之一。然而，这一论点的大部分证据是基于简单的外来优势和本地物种在退化系统中的下降之间的相关性。尽管有吸引力，但直接因果关系并不是唯一可能的解释。一个合理的替代假设是，外来的优势可能是间接的后果，生境改造驱动本地物种的损失。在一篇新论文中，麦克杜格尔和特林顿首次直接测试了入侵物种是群落变化的驱动力，还是仅仅是环境变化的沿着乘客。
Invasive species are widely accepted as one of the leading direct causes of biodiversity loss. However, much of the evidence for this contention is based on simple correlations between exotic dominance and native species decline in degraded systems. Although appealing, direct causality is not the only possible interpretation. A plausible alternative hypothesis is that exotic dominance could be the indirect consequence of habitat modification driving native species loss. In a new paper, MacDougall and Turkington now provide the first direct test of whether invasive species are the drivers of community change, or merely I passengers' along for the environmental ride.