Plant Herbivore Interactions at the Forest Edge
Plant Herbivore Interactions at the Forest Edge
复制标题
森林边缘植物与食草动物的相互作用
DOI：
--
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
M. Tabarelli
中科院分区：
文献类型：
--
作者：
R. Wirth;S. Meyer;I. Leal;M. Tabarelli
越来越多的全球森林景观靠近边缘，边缘效应已被证明是影响生物和生态过程的关键力量。尽管人们越来越多地认识到边缘效应对物种相互作用的影响，但尚未对森林边缘的植物-食草动物相互作用进行系统的综述。在这里，我们综合了已发表的研究，试图检测森林边缘草食动物密度和食草动物的模式，识别产生这些模式的潜在机制，并探索它们对森林边缘作为一个生态系统的潜在影响。主要结论是，食草动物，特别是多面手，从森林边缘获得了深刻的好处，这往往是由于有利的微环境条件、边缘导致的食物数量/质量的增加，以及(较少有文献记载的)打乱了对食草动物的自上而下的调节。最后，我们提出了证据和因果解释，表明边缘相关的草食动物通过一系列直接和间接的影响，可能改变物种之间的相互作用，推迟边缘的演替过程，并放大通常由人类引起的森林生物群的变化。
An ever-increasing proportion of the global forested landscape is in close proximity to edges and edge effects have been shown to represent key forces affecting both organisms and ecological processes. Despite increasing recognition of edge effects on species interactions, a systematic review devoted to plant- herbivore interactions along forest edges has not yet been performed. Here we syn- thesize published research attempting to detect patterns of herbivore densities and herbivory at forest edges, identify the underlying mechanisms generating these patterns, and explore their potential impacts for the forest edge as an ecosystem. Key conclusions are that herbivores, especially generalists, profoundly benefit from forest edges, often due to favourable microenvironmental conditions, an edge-induced increase in food quantity/quality, and (less well documented) disrupted top-down regulation of herbivores. Finally, we present evidence and causal explanations that edge-associated herbivores, via a range of direct and indirect impacts, may alter species interactions, delay successional processes at the edge, and amplify the often human-induced changes on forest biota.