Identifying important species in meta-communities

IF 6.3 2区 环境科学与生态学 Q1 ECOLOGY
Guillaume Rollin, Susanne Kortsch, José Lages, Benoit Gauzens
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Abstract

Abstract Image

确定元群落中的重要物种
随着生物多样性危机的不断加剧,确定哪些物种对防止其他物种灭绝具有特别重要的意义已成为一个紧迫的问题。然而,大多数检测这些重要物种的方法都是在局部(即群落)水平上进行的,没有考虑物种在景观中分散的潜在影响。由于栖息地破碎化对生物多样性有重要影响,我们需要一些方法来更好地评估地方和空间过程如何相互作用以确定重要物种,从而更好地为保护工作提供信息。我们提出了一种改进的 PageRank 算法,用于确定物种在元群落中的重要性。物种的重要性被定义为元群落中的物种在两组网络中传播养分的能力:描述本地营养相互作用的食物网和代表物种在不同生境斑块间移动的景观网络。我们发现,无论是在局部尺度(栖息地斑块内)还是在更大尺度(景观)上,扩散和营养联系共同决定了不同物种的重要性。更确切地说,我们观察到:(i)在孤立群落和元群落之间,被认为是重要物种的物种会发生变化;(ii)一个物种在元群落中的重要性取决于其生境斑块在景观网络中的位置。物种的重要性受内在因素(扩散能力、营养位置)和外在因素(斑块在景观网络中的位置)的影响。我们的研究结果表明,在确定重要物种时,需要在更大范围内考虑空间因素。
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来源期刊
CiteScore
11.60
自引率
3.00%
发文量
236
审稿时长
4-8 weeks
期刊介绍: A British Ecological Society journal, Methods in Ecology and Evolution (MEE) promotes the development of new methods in ecology and evolution, and facilitates their dissemination and uptake by the research community. MEE brings together papers from previously disparate sub-disciplines to provide a single forum for tracking methodological developments in all areas. MEE publishes methodological papers in any area of ecology and evolution, including: -Phylogenetic analysis -Statistical methods -Conservation & management -Theoretical methods -Practical methods, including lab and field -This list is not exhaustive, and we welcome enquiries about possible submissions. Methods are defined in the widest terms and may be analytical, practical or conceptual. A primary aim of the journal is to maximise the uptake of techniques by the community. We recognise that a major stumbling block in the uptake and application of new methods is the accessibility of methods. For example, users may need computer code, example applications or demonstrations of methods.
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