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Positive associations among rare species and their persistence in ecological assemblages.
Nature Ecology & Evolution ( IF 16.8 ) Pub Date : 2019-12-16 , DOI: 10.1038/s41559-019-1053-5
Joaquín Calatayud 1, 2 , Enrique Andivia 3, 4 , Adrián Escudero 5 , Carlos J Melián 6 , Rubén Bernardo-Madrid 7 , Markus Stoffel 8, 9, 10 , Cristina Aponte 11 , Nagore G Medina 12, 13 , Rafael Molina-Venegas 14 , Xavier Arnan 15 , Martin Rosvall 1 , Magnus Neuman 1 , Jorge Ari Noriega 2 , Fernanda Alves-Martins 2 , Isabel Draper 13 , Arantzazu Luzuriaga 5 , Juan Antonio Ballesteros-Cánovas 8, 10 , César Morales-Molino 16, 17 , Pablo Ferrandis 18 , Asier Herrero 3, 19 , Luciano Pataro 13 , Leandro Juen 20 , Alex Cea 21 , Jaime Madrigal-González 10
Affiliation  

According to the competitive exclusion principle, species with low competitive abilities should be excluded by more efficient competitors; yet, they generally remain as rare species. Here, we describe the positive and negative spatial association networks of 326 disparate assemblages, showing a general organization pattern that simultaneously supports the primacy of competition and the persistence of rare species. Abundant species monopolize negative associations in about 90% of the assemblages. On the other hand, rare species are mostly involved in positive associations, forming small network modules. Simulations suggest that positive interactions among rare species and microhabitat preferences are the most probable mechanisms underpinning this pattern and rare species persistence. The consistent results across taxa and geography suggest a general explanation for the maintenance of biodiversity in competitive environments.

中文翻译:

稀有物种之间的正相关关系及其在生态组合中的持久性。

根据竞争排斥原则,竞争能力低的物种应被更有效率的竞争者排斥;然而,它们通常仍然是稀有物种。在这里,我们描述了326个不同组合的正负空间关联网络,显示了一种一般的组织模式,同时支持竞争的首要地位和稀有物种的持久性。丰富的物种在约90%的组合中垄断了负关联。另一方面,稀有物种主要参与积极的联系,形成小的网络模块。模拟表明,稀有物种与微生境偏好之间的正向相互作用是支撑这种模式和稀有物种持久性的最可能机制。
更新日期:2019-12-17
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