Spatial heterogeneity enhance robustness of large multi-species ecosystems.

Understanding ecosystem stability and functioning is a long-standing goal in theoretical ecology, with one of the main tools being dynamical modelling of species abundances. With the help of spatially unresolved (well-mixed) population models and equilibrium dynamics, limits to stability and regions...

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Autores principales:	Susanne Pettersson, Martin Nilsson Jacobi
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/6eee157bd26e4a4d92eab4e1063f17bd
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spelling	oai:doaj.org-article:6eee157bd26e4a4d92eab4e1063f17bd2021-12-02T19:57:37ZSpatial heterogeneity enhance robustness of large multi-species ecosystems.1553-734X1553-735810.1371/journal.pcbi.1008899https://doaj.org/article/6eee157bd26e4a4d92eab4e1063f17bd2021-10-01T00:00:00Zhttps://doi.org/10.1371/journal.pcbi.1008899https://doaj.org/toc/1553-734Xhttps://doaj.org/toc/1553-7358Understanding ecosystem stability and functioning is a long-standing goal in theoretical ecology, with one of the main tools being dynamical modelling of species abundances. With the help of spatially unresolved (well-mixed) population models and equilibrium dynamics, limits to stability and regions of various ecosystem robustness have been extensively mapped in terms of diversity (number of species), types of interactions, interaction strengths, varying interaction networks (for example plant-pollinator, food-web) and varying structures of these networks. Although many insights have been gained, the impact of spatial extension is not included in this body of knowledge. Recent studies of spatially explicit modelling on the other hand have shown that stability limits can be crossed and diversity increased for systems with spatial heterogeneity in species interactions and/or chaotic dynamics. Here we show that such crossing and diversity increase can appear under less strict conditions. We find that the mere possibility of varying species abundances at different spatial locations make possible the preservation or increase in diversity across previous boundaries thought to mark catastrophic transitions. In addition, we introduce and make explicit a multitude of different dynamics a spatially extended complex system can use to stabilise. This expanded stabilising repertoire of dynamics is largest at intermediate levels of dispersal. Thus we find that spatially extended systems with intermediate dispersal are more robust, in general have higher diversity and can stabilise beyond previous stability boundaries, in contrast to well-mixed systems.Susanne PetterssonMartin Nilsson JacobiPublic Library of Science (PLoS)articleBiology (General)QH301-705.5ENPLoS Computational Biology, Vol 17, Iss 10, p e1008899 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5
spellingShingle	Biology (General) QH301-705.5 Susanne Pettersson Martin Nilsson Jacobi Spatial heterogeneity enhance robustness of large multi-species ecosystems.
description	Understanding ecosystem stability and functioning is a long-standing goal in theoretical ecology, with one of the main tools being dynamical modelling of species abundances. With the help of spatially unresolved (well-mixed) population models and equilibrium dynamics, limits to stability and regions of various ecosystem robustness have been extensively mapped in terms of diversity (number of species), types of interactions, interaction strengths, varying interaction networks (for example plant-pollinator, food-web) and varying structures of these networks. Although many insights have been gained, the impact of spatial extension is not included in this body of knowledge. Recent studies of spatially explicit modelling on the other hand have shown that stability limits can be crossed and diversity increased for systems with spatial heterogeneity in species interactions and/or chaotic dynamics. Here we show that such crossing and diversity increase can appear under less strict conditions. We find that the mere possibility of varying species abundances at different spatial locations make possible the preservation or increase in diversity across previous boundaries thought to mark catastrophic transitions. In addition, we introduce and make explicit a multitude of different dynamics a spatially extended complex system can use to stabilise. This expanded stabilising repertoire of dynamics is largest at intermediate levels of dispersal. Thus we find that spatially extended systems with intermediate dispersal are more robust, in general have higher diversity and can stabilise beyond previous stability boundaries, in contrast to well-mixed systems.
format	article
author	Susanne Pettersson Martin Nilsson Jacobi
author_facet	Susanne Pettersson Martin Nilsson Jacobi
author_sort	Susanne Pettersson
title	Spatial heterogeneity enhance robustness of large multi-species ecosystems.
title_short	Spatial heterogeneity enhance robustness of large multi-species ecosystems.
title_full	Spatial heterogeneity enhance robustness of large multi-species ecosystems.
title_fullStr	Spatial heterogeneity enhance robustness of large multi-species ecosystems.
title_full_unstemmed	Spatial heterogeneity enhance robustness of large multi-species ecosystems.
title_sort	spatial heterogeneity enhance robustness of large multi-species ecosystems.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/6eee157bd26e4a4d92eab4e1063f17bd
work_keys_str_mv	AT susannepettersson spatialheterogeneityenhancerobustnessoflargemultispeciesecosystems AT martinnilssonjacobi spatialheterogeneityenhancerobustnessoflargemultispeciesecosystems
_version_	1718375782717325312

Spatial heterogeneity enhance robustness of large multi-species ecosystems.

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