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短期飓风对标记鸟类的新热带群落的影响及其对早期群落恢复力的意义。

Short-term hurricane impacts on a neotropical community of marked birds and implications for early-stage community resilience.

机构信息

University of Alaska Museum, Fairbanks, Alaska, United States of America.

出版信息

PLoS One. 2010 Nov 30;5(11):e15109. doi: 10.1371/journal.pone.0015109.

Abstract

Populations in fragmented ecosystems risk extirpation through natural disasters, which must be endured rather than avoided. Managing communities for resilience is thus critical, but details are sketchy about the capacity for resilience and its associated properties in vertebrate communities. We studied short-term resilience in a community of individually marked birds, following this community through the catastrophic destruction of its forest habitat by Hurricane Iris in Belize, Central America. We sampled for 58 d immediately before the storm, 28 d beginning 11 d after Hurricane Iris, and for 69 d approximately one year later. Our data showed that the initial capacity for resilience was strong. Many banded individuals remained after the storm, although lower post-hurricane recapture rates revealed increased turnover among individuals. Changes occurred in community dynamics and in abundances among species and guilds. Survivors and immigrants both were critical components of resilience, but in a heterogeneous, species-specific manner. Delayed effects, including higher fat storage and increased species losses, were evident one year later.

摘要

在碎片化的生态系统中,由于自然灾害,种群面临灭绝的风险,而人类必须承受这些灾害,而非回避。因此,管理具有恢复力的社区至关重要,但关于脊椎动物群落的恢复力及其相关特性的具体细节还很模糊。我们研究了中美洲伯利兹的一场森林栖息地被飓风“艾里斯”摧毁后,一个有个体标记鸟类的群落的短期恢复力。我们在风暴前进行了 58 天的采样,在飓风“艾里斯”后 11 天开始的 28 天内进行了采样,大约一年后又进行了 69 天的采样。我们的数据表明,最初的恢复力很强。尽管飓风后再次捕获的个体数量减少,表明个体之间的更替增加,但仍有许多带有标记的个体幸存下来。群落动态以及物种和类群的丰度都发生了变化。幸存者和移民都是恢复力的关键组成部分,但方式具有异质性和物种特异性。一年后,出现了包括更高的脂肪储存和更多物种损失在内的延迟效应。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/31af/2994923/524ea2ba51ce/pone.0015109.g001.jpg

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