Logging cuts the functional importance of invertebrates in tropical rainforest.
Logging cuts the functional importance of invertebrates in tropical rainforest.
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DOI：
10.1038/ncomms7836
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发表时间：
2015-04-13
影响因子：
16.6
通讯作者：
Turner, Edgar C.
中科院分区：
文献类型：
--
作者：
Ewers, Robert M.;Boyle, Michael J. W.;Gleave, Rosalind A.;Plowman, Nichola S.;Benedick, Suzan;Bernard, Henry;Bishop, Tom R.;Bakhtiar, Effendi Y.;Vun Khen Chey;Chung, Arthur Y. C.;Davies, Richard G.;Edwards, David P.;Eggleton, Paul;Fayle, Tom M.;Hardwick, Stephen R.;Homathevi, Rahman;Kitching, Roger L.;Khoo, Min Sheng;Luke, Sarah H.;March, Joshua J.;Nilus, Reuben;Pfeifer, Marion;Rao, Sri V.;Sharp, Adam C.;Snaddon, Jake L.;Stork, Nigel E.;Struebig, Matthew J.;Wearn, Oliver R.;Yusah, Kalsum M.;Turner, Edgar C.
无脊椎动物是原始热带雨林中的主要物种，其丰富性和多样性有助于这些全球重要生态系统的运作和复原力。然而，超过三分之一的热带森林已被砍伐，对雨林生物多样性产生了巨大影响，可能会破坏关键的生态系统进程。我们发现，无脊椎动物的贡献，三个生态系统的过程在三个营养水平（凋落物分解，种子捕食和清除，无脊椎动物捕食）减少了一半以下的记录。这些变化与白蚁，蚂蚁，甲虫和蚯蚓的关键功能群的丰度下降，并在小哺乳动物，两栖动物和食虫鸟类的丰度增加，在记录相对于原始森林。我们的研究结果表明，生态系统过程本身有相当大的弹性，伐木，但无脊椎动物功能的重要性的持续下降是人类引起的转变，这些生态过程如何在热带雨林中运作的指示。 无脊椎动物是热带森林生态功能的关键组成部分。在这里，Ewers等人表明，与原始森林相比，伐木使无脊椎动物物种对几个关键生态系统过程的贡献减半，包括凋落物分解。
Invertebrates are dominant species in primary tropical rainforests, where their abundance and diversity contributes to the functioning and resilience of these globally important ecosystems. However, more than one-third of tropical forests have been logged, with dramatic impacts on rainforest biodiversity that may disrupt key ecosystem processes. We find that the contribution of invertebrates to three ecosystem processes operating at three trophic levels (litter decomposition, seed predation and removal, and invertebrate predation) is reduced by up to one-half following logging. These changes are associated with decreased abundance of key functional groups of termites, ants, beetles and earthworms, and an increase in the abundance of small mammals, amphibians and insectivorous birds in logged relative to primary forest. Our results suggest that ecosystem processes themselves have considerable resilience to logging, but the consistent decline of invertebrate functional importance is indicative of a human-induced shift in how these ecological processes operate in tropical rainforests. Invertebrates are key components in the ecological functioning of tropical forests. Here, Ewers et al. show that, compared to primary forest, logging halves the contribution of invertebrate species to several key ecosystem processes, including litter decomposition.
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