Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/ele.13877 |
Species richness increases fitness differences, but does not affect niche differences | |
Jurg W. Spaak; Camille Carpentier; Frederik De Laender | |
2021-09-16 | |
发表期刊 | Ecology Letters
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出版年 | 2021 |
英文摘要 | A key question in ecology is what limits species richness. Modern coexistence theory presents the persistence of species as a balance between niche differences and fitness differences that favour and hamper coexistence, respectively. With most applications focusing on species pairs, however, we know little about if and how this balance changes with species richness. Here, we apply recently developed definitions of niche and fitness differences, based on invasion analysis, to multispecies communities. We present the first mathematical proof that, for invariant average interaction strengths, the average fitness difference among species increases with richness, while the average niche difference stays constant. Extensive simulations with more complex models and analyses of empirical data confirmed these mathematical results. Combined, our work suggests that, as species accumulate in ecosystems, ever-increasing fitness differences will at some point exceed constant niche differences, limiting species richness. Our results contribute to a better understanding of coexistence multispecies communities. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/338804 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Jurg W. Spaak,Camille Carpentier,Frederik De Laender. Species richness increases fitness differences, but does not affect niche differences[J]. Ecology Letters,2021. |
APA | Jurg W. Spaak,Camille Carpentier,&Frederik De Laender.(2021).Species richness increases fitness differences, but does not affect niche differences.Ecology Letters. |
MLA | Jurg W. Spaak,et al."Species richness increases fitness differences, but does not affect niche differences".Ecology Letters (2021). |
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