基于物种-斑块网络的元群落时空动态分析

IF 7.6 1区 环境科学与生态学 Q1 ECOLOGY Ecology Letters Pub Date : 2023-05-12 DOI:10.1111/ele.14243
Hai-Dong Li, Marcel Holyoak, Zhishu Xiao
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引用次数: 0

摘要

在局部和区域尺度上的定殖和灭绝以及斑块的获得和损失是元群落时空动态的重要过程。然而,当物种灭绝-定植和斑块增减过程同时发生时,对这种时空动态进行量化分析仍然存在挑战。网络分析的最新进展表明,在解开元群落中定植、灭绝和斑块动态的作用方面具有巨大的潜力。在此,我们开发了一种物种-斑块网络方法来量化元群落动态,包括(i)网络结构的时间变化,以及(ii)反映物种灭绝-定植和斑块增减的物种-斑块连接及其组成部分的时间β多样性。在模拟数据集上的应用表明,该方法能够提供元群落装配过程的信息。基于三个经验数据集,我们的物种-斑块网络方法通过区分不同尺度上物种定植和灭绝的影响以及特定环境因素对物种-斑块网络结构的影响,为元群落动态提供了额外的信息。总之,我们的物种-斑块网络框架通过量化物种和斑块在局部和全球环境变化下的损益,为监测和揭示长期元群落动态提供了有效的方法。
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Disentangling spatiotemporal dynamics in metacommunities through a species-patch network approach

Colonization and extinction at local and regional scales, and gains and losses of patches are important processes in the spatiotemporal dynamics of metacommunities. However, analytical challenges remain in quantifying such spatiotemporal dynamics when species extinction-colonization and patch gain and loss processes act simultaneously. Recent advances in network analysis show great potential in disentangling the roles of colonization, extinction, and patch dynamics in metacommunities. Here, we developed a species-patch network approach to quantify metacommunity dynamics including (i) temporal changes in network structure, and (ii) temporal beta diversity of species-patch links and its components that reflect species extinction-colonization and patch gain and loss. Application of the methods to simulated datasets demonstrated that the approach was informative about metacommunity assembly processes. Based on three empirical datasets, our species-patch network approach provided additional information about metacommunity dynamics through distinguishing the effects of species colonization and extinction at different scales from patch gains and losses and how specific environmental factors related to species-patch network structure. In conclusion, our species-patch network framework provides effective methods for monitoring and revealing long-term metacommunity dynamics by quantifying gains and losses of both species and patches under local and global environmental change.

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来源期刊
Ecology Letters
Ecology Letters 环境科学-生态学
CiteScore
17.60
自引率
3.40%
发文量
201
审稿时长
1.8 months
期刊介绍: Ecology Letters serves as a platform for the rapid publication of innovative research in ecology. It considers manuscripts across all taxa, biomes, and geographic regions, prioritizing papers that investigate clearly stated hypotheses. The journal publishes concise papers of high originality and general interest, contributing to new developments in ecology. Purely descriptive papers and those that only confirm or extend previous results are discouraged.
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