Extinction debt in source-sink metacommunities.

In an increasingly modified world, understanding and predicting the consequences of landscape alteration on biodiversity is a challenge for ecologists. To this end, metacommunity theory has developed to better understand the complexity of local and regional interactions that occur across larger land...

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Autores principales:	Nicolas Mouquet, Birte Matthiessen, Tom Miller, Andrew Gonzalez
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3d85fd73c97846f6b4eebcc4b90b39a3
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spelling	oai:doaj.org-article:3d85fd73c97846f6b4eebcc4b90b39a32021-11-18T06:57:39ZExtinction debt in source-sink metacommunities.1932-620310.1371/journal.pone.0017567https://doaj.org/article/3d85fd73c97846f6b4eebcc4b90b39a32011-03-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21408133/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203In an increasingly modified world, understanding and predicting the consequences of landscape alteration on biodiversity is a challenge for ecologists. To this end, metacommunity theory has developed to better understand the complexity of local and regional interactions that occur across larger landscapes. While metacommunity ecology has now provided several alternative models of species coexistence at different spatial scales, predictions regarding the consequences of landscape alteration have been done exclusively for the competition-colonization trade off model (CC). In this paper we investigate the effects of landscape perturbation on source-sink metacommunities. We show that habitat destruction perturbs the equilibria among species competitive effects within the metacommunity, driving both direct extinctions and an indirect extinction debt. As in CC models, we found a time lag for extinction following habitat destruction that varied in length depending upon the relative importance of direct and indirect effects. However, in contrast to CC models, we found that the less competitive species are more affected by habitat destruction. The best competitors can sometimes even be positively affected by habitat destruction, which corresponds well with the results of field studies. Our results are complementary to those results found in CC models of metacommunity dynamics. From a conservation perspective, our results illustrate that landscape alteration jeopardizes species coexistence in patchy landscapes through complex indirect effects and delayed extinctions patterns.Nicolas MouquetBirte MatthiessenTom MillerAndrew GonzalezPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 3, p e17567 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nicolas Mouquet Birte Matthiessen Tom Miller Andrew Gonzalez Extinction debt in source-sink metacommunities.
description	In an increasingly modified world, understanding and predicting the consequences of landscape alteration on biodiversity is a challenge for ecologists. To this end, metacommunity theory has developed to better understand the complexity of local and regional interactions that occur across larger landscapes. While metacommunity ecology has now provided several alternative models of species coexistence at different spatial scales, predictions regarding the consequences of landscape alteration have been done exclusively for the competition-colonization trade off model (CC). In this paper we investigate the effects of landscape perturbation on source-sink metacommunities. We show that habitat destruction perturbs the equilibria among species competitive effects within the metacommunity, driving both direct extinctions and an indirect extinction debt. As in CC models, we found a time lag for extinction following habitat destruction that varied in length depending upon the relative importance of direct and indirect effects. However, in contrast to CC models, we found that the less competitive species are more affected by habitat destruction. The best competitors can sometimes even be positively affected by habitat destruction, which corresponds well with the results of field studies. Our results are complementary to those results found in CC models of metacommunity dynamics. From a conservation perspective, our results illustrate that landscape alteration jeopardizes species coexistence in patchy landscapes through complex indirect effects and delayed extinctions patterns.
format	article
author	Nicolas Mouquet Birte Matthiessen Tom Miller Andrew Gonzalez
author_facet	Nicolas Mouquet Birte Matthiessen Tom Miller Andrew Gonzalez
author_sort	Nicolas Mouquet
title	Extinction debt in source-sink metacommunities.
title_short	Extinction debt in source-sink metacommunities.
title_full	Extinction debt in source-sink metacommunities.
title_fullStr	Extinction debt in source-sink metacommunities.
title_full_unstemmed	Extinction debt in source-sink metacommunities.
title_sort	extinction debt in source-sink metacommunities.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/3d85fd73c97846f6b4eebcc4b90b39a3
work_keys_str_mv	AT nicolasmouquet extinctiondebtinsourcesinkmetacommunities AT birtematthiessen extinctiondebtinsourcesinkmetacommunities AT tommiller extinctiondebtinsourcesinkmetacommunities AT andrewgonzalez extinctiondebtinsourcesinkmetacommunities
_version_	1718424161476411392

Extinction debt in source-sink metacommunities.

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