Emergence of structural patterns in neutral trophic networks.

Interaction networks are central elements of ecological systems and have very complex structures. Historically, much effort has focused on niche-mediated processes to explain these structures, while an emerging consensus posits that both niche and neutral mechanisms simultaneously shape many feature...

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Autores principales:	Elsa Canard, Nicolas Mouquet, Lucile Marescot, Kevin J Gaston, Dominique Gravel, David Mouillot
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b5c799cf7da646f6ab7d2075d9833a14
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id	oai:doaj.org-article:b5c799cf7da646f6ab7d2075d9833a14
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spelling	oai:doaj.org-article:b5c799cf7da646f6ab7d2075d9833a142021-11-18T07:09:12ZEmergence of structural patterns in neutral trophic networks.1932-620310.1371/journal.pone.0038295https://doaj.org/article/b5c799cf7da646f6ab7d2075d9833a142012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22899987/?tool=EBIhttps://doaj.org/toc/1932-6203Interaction networks are central elements of ecological systems and have very complex structures. Historically, much effort has focused on niche-mediated processes to explain these structures, while an emerging consensus posits that both niche and neutral mechanisms simultaneously shape many features of ecological communities. However, the study of interaction networks still lacks a comprehensive neutral theory. Here we present a neutral model of predator-prey interactions and analyze the structural characteristics of the simulated networks. We find that connectance values (complexity) and complexity-diversity relationships of neutral networks are close to those observed in empirical bipartite networks. High nestedness and low modularity values observed in neutral networks fall in the range of those from empirical antagonist bipartite networks. Our results suggest that, as an alternative to niche-mediated processes that induce incompatibility between species ("niche forbidden links"), neutral processes create "neutral forbidden links" due to uneven species abundance distributions and the low probability of interaction between rare species. Neutral trophic networks must be seen as the missing endpoint of a continuum from niche to purely stochastic approaches of community organization.Elsa CanardNicolas MouquetLucile MarescotKevin J GastonDominique GravelDavid MouillotPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 8, p e38295 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Elsa Canard Nicolas Mouquet Lucile Marescot Kevin J Gaston Dominique Gravel David Mouillot Emergence of structural patterns in neutral trophic networks.
description	Interaction networks are central elements of ecological systems and have very complex structures. Historically, much effort has focused on niche-mediated processes to explain these structures, while an emerging consensus posits that both niche and neutral mechanisms simultaneously shape many features of ecological communities. However, the study of interaction networks still lacks a comprehensive neutral theory. Here we present a neutral model of predator-prey interactions and analyze the structural characteristics of the simulated networks. We find that connectance values (complexity) and complexity-diversity relationships of neutral networks are close to those observed in empirical bipartite networks. High nestedness and low modularity values observed in neutral networks fall in the range of those from empirical antagonist bipartite networks. Our results suggest that, as an alternative to niche-mediated processes that induce incompatibility between species ("niche forbidden links"), neutral processes create "neutral forbidden links" due to uneven species abundance distributions and the low probability of interaction between rare species. Neutral trophic networks must be seen as the missing endpoint of a continuum from niche to purely stochastic approaches of community organization.
format	article
author	Elsa Canard Nicolas Mouquet Lucile Marescot Kevin J Gaston Dominique Gravel David Mouillot
author_facet	Elsa Canard Nicolas Mouquet Lucile Marescot Kevin J Gaston Dominique Gravel David Mouillot
author_sort	Elsa Canard
title	Emergence of structural patterns in neutral trophic networks.
title_short	Emergence of structural patterns in neutral trophic networks.
title_full	Emergence of structural patterns in neutral trophic networks.
title_fullStr	Emergence of structural patterns in neutral trophic networks.
title_full_unstemmed	Emergence of structural patterns in neutral trophic networks.
title_sort	emergence of structural patterns in neutral trophic networks.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/b5c799cf7da646f6ab7d2075d9833a14
work_keys_str_mv	AT elsacanard emergenceofstructuralpatternsinneutraltrophicnetworks AT nicolasmouquet emergenceofstructuralpatternsinneutraltrophicnetworks AT lucilemarescot emergenceofstructuralpatternsinneutraltrophicnetworks AT kevinjgaston emergenceofstructuralpatternsinneutraltrophicnetworks AT dominiquegravel emergenceofstructuralpatternsinneutraltrophicnetworks AT davidmouillot emergenceofstructuralpatternsinneutraltrophicnetworks
_version_	1718423876853039104

Emergence of structural patterns in neutral trophic networks.

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