Global patterns and predictors of bird species responses to forest fragmentation: Implications for ecosystem function and conservation
Global patterns and predictors of bird species responses to forest fragmentation: Implications for ecosystem function and conservation
复制标题
DOI：
10.1016/j.biocon.2013.11.024
复制
发表时间：
2014-01-01
影响因子：
5.9
通讯作者：
Tobias, Joseph A.
中科院分区：
文献类型：
--
作者：
Bregman, Tom P.;Sekercioglu, Cagan H.;Tobias, Joseph A.
森林的破碎化是全世界主要的人类影响，对生态系统的养护和管理产生重大影响。虽然许多研究已经评估了局部尺度上的破碎化对生物多样性的影响，但我们对生物体不同功能群的生态影响的理解仍然有限，特别是在全球尺度上。在这里，我们使用线性混合模型来探索分布在五大洲293个地点的2844种鸟类的发生模式和生态功能。我们发现，碎片的敏感性根据功能组和身体质量的变化，食虫动物和大型食果动物的患病率下降的片段大小，特别是在100公顷。然而，最严重的影响仅限于热带地区，而破碎化对温带鸟类群落的基本生态结构没有显着影响。我们的结论是，热带系统的土地利用变化很可能会破坏生物过程，包括种子传播和控制食草昆虫。我们的研究结果强调了纬度在调解栖息地丧失影响方面的重要性，并为防止敏感地区关键生态系统过程崩溃所需的最小碎片尺寸提供了一般指导方针。(C)2013爱思唯尔有限公司保留所有权利。
The fragmentation of forests is a dominant human impact worldwide with major implications for the conservation and management of ecosystems. Although many studies have assessed the effects of fragmentation on biodiversity at local scales, our understanding of the ecological implications for different functional groups of organisms remains limited, particularly at global scales. Here, we use linear mixed models to explore patterns of occurrence and ecological function of 2844 bird species at 293 localities spanning five continents. We show that sensitivity to fragmentation varies according to functional group and body mass, with the prevalence of insectivores and large frugivores declining in relation to fragment size, particularly under 100 ha. However, the most severe effects were restricted to the tropics, whereas fragmentation had no significant impact on the basic ecological structure of temperate bird communities. We conclude that land-use change in tropical systems is likely to disrupt biotic processes, including seed dispersal and the control of insect herbivores. Our findings highlight the importance of latitude in mediating the impacts of habitat loss, and offer general guidelines for the minimum size of fragments required to prevent the collapse of key ecosystem processes in sensitive regions. (C) 2013 Elsevier Ltd. All rights reserved.