Spatial topologies affect local food web structure and diversity in evolutionary metacommunities

Abstract An important challenge in theoretical ecology is to better predict ecological responses to environmental change, and in particular to spatial changes such as habitat fragmentation. Classical food-web models have focused on purely ecological predictions, without taking adaptation or evolutio...

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Autores principales:	Lev Bolchoun, Barbara Drossel, Korinna Theresa Allhoff
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ef36583119c94f55b249226698eb2722
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spelling	oai:doaj.org-article:ef36583119c94f55b249226698eb27222021-12-02T11:53:11ZSpatial topologies affect local food web structure and diversity in evolutionary metacommunities10.1038/s41598-017-01921-y2045-2322https://doaj.org/article/ef36583119c94f55b249226698eb27222017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01921-yhttps://doaj.org/toc/2045-2322Abstract An important challenge in theoretical ecology is to better predict ecological responses to environmental change, and in particular to spatial changes such as habitat fragmentation. Classical food-web models have focused on purely ecological predictions, without taking adaptation or evolution of species traits into account. We address this issue using an eco-evolutionary model, which is based on body masses and diets as the key traits that determine metabolic rates and trophic interactions. The model implements evolution by the introduction of new morphs that are related to the existing ones, so that the network structure itself evolves in a self-organized manner. We consider the coupling and decoupling of habitats in multi-trophic metacommunities consisting of 2 or 4 habitats. Our model thus integrates metacommunity models, which describe ecosystems as networks of networks, with large community evolution models. We find that rescue effects and source-sink effects occur within coupled habitats, which have the potential to change local selection pressures so that the local food web structure shows a fingerprint of its spatial conditions. Within our model system, we observe that habitat coupling increases the lifetimes of top predators and promotes local biodiversity.Lev BolchounBarbara DrosselKorinna Theresa AllhoffNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lev Bolchoun Barbara Drossel Korinna Theresa Allhoff Spatial topologies affect local food web structure and diversity in evolutionary metacommunities
description	Abstract An important challenge in theoretical ecology is to better predict ecological responses to environmental change, and in particular to spatial changes such as habitat fragmentation. Classical food-web models have focused on purely ecological predictions, without taking adaptation or evolution of species traits into account. We address this issue using an eco-evolutionary model, which is based on body masses and diets as the key traits that determine metabolic rates and trophic interactions. The model implements evolution by the introduction of new morphs that are related to the existing ones, so that the network structure itself evolves in a self-organized manner. We consider the coupling and decoupling of habitats in multi-trophic metacommunities consisting of 2 or 4 habitats. Our model thus integrates metacommunity models, which describe ecosystems as networks of networks, with large community evolution models. We find that rescue effects and source-sink effects occur within coupled habitats, which have the potential to change local selection pressures so that the local food web structure shows a fingerprint of its spatial conditions. Within our model system, we observe that habitat coupling increases the lifetimes of top predators and promotes local biodiversity.
format	article
author	Lev Bolchoun Barbara Drossel Korinna Theresa Allhoff
author_facet	Lev Bolchoun Barbara Drossel Korinna Theresa Allhoff
author_sort	Lev Bolchoun
title	Spatial topologies affect local food web structure and diversity in evolutionary metacommunities
title_short	Spatial topologies affect local food web structure and diversity in evolutionary metacommunities
title_full	Spatial topologies affect local food web structure and diversity in evolutionary metacommunities
title_fullStr	Spatial topologies affect local food web structure and diversity in evolutionary metacommunities
title_full_unstemmed	Spatial topologies affect local food web structure and diversity in evolutionary metacommunities
title_sort	spatial topologies affect local food web structure and diversity in evolutionary metacommunities
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/ef36583119c94f55b249226698eb2722
work_keys_str_mv	AT levbolchoun spatialtopologiesaffectlocalfoodwebstructureanddiversityinevolutionarymetacommunities AT barbaradrossel spatialtopologiesaffectlocalfoodwebstructureanddiversityinevolutionarymetacommunities AT korinnatheresaallhoff spatialtopologiesaffectlocalfoodwebstructureanddiversityinevolutionarymetacommunities
_version_	1718394901149777920

Spatial topologies affect local food web structure and diversity in evolutionary metacommunities

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