Contrasted effects of diversity and immigration on ecological insurance in marine bacterioplankton communities.

The ecological insurance hypothesis predicts a positive effect of species richness on ecosystem functioning in a variable environment. This effect stems from temporal and spatial complementarity among species within metacommunities coupled with optimal levels of dispersal. Despite its importance in...

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Autores principales:	Thierry Bouvier, Patrick Venail, Thomas Pommier, Corinne Bouvier, Claire Barbera, Nicolas Mouquet
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b8d2221b64214ebd8be7111f6b87c964
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spelling	oai:doaj.org-article:b8d2221b64214ebd8be7111f6b87c9642021-11-18T07:15:47ZContrasted effects of diversity and immigration on ecological insurance in marine bacterioplankton communities.1932-620310.1371/journal.pone.0037620https://doaj.org/article/b8d2221b64214ebd8be7111f6b87c9642012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22701572/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203The ecological insurance hypothesis predicts a positive effect of species richness on ecosystem functioning in a variable environment. This effect stems from temporal and spatial complementarity among species within metacommunities coupled with optimal levels of dispersal. Despite its importance in the context of global change by human activities, empirical evidence for ecological insurance remains scarce and controversial. Here we use natural aquatic bacterial communities to explore some of the predictions of the spatial and temporal aspects of the ecological insurance hypothesis. Addressing ecological insurance with bacterioplankton is of strong relevance given their central role in fundamental ecosystem processes. Our experimental set up consisted of water and bacterioplankton communities from two contrasting coastal lagoons. In order to mimic environmental fluctuations, the bacterioplankton community from one lagoon was successively transferred between tanks containing water from each of the two lagoons. We manipulated initial bacterial diversity for experimental communities and immigration during the experiment. We found that the abundance and production of bacterioplankton communities was higher and more stable (lower temporal variance) for treatments with high initial bacterial diversity. Immigration was only marginally beneficial to bacterial communities, probably because microbial communities operate at different time scales compared to the frequency of perturbation selected in this study, and of their intrinsic high physiologic plasticity. Such local "physiological insurance" may have a strong significance for the maintenance of bacterial abundance and production in the face of environmental perturbations.Thierry BouvierPatrick VenailThomas PommierCorinne BouvierClaire BarberaNicolas MouquetPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 6, p e37620 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Thierry Bouvier Patrick Venail Thomas Pommier Corinne Bouvier Claire Barbera Nicolas Mouquet Contrasted effects of diversity and immigration on ecological insurance in marine bacterioplankton communities.
description	The ecological insurance hypothesis predicts a positive effect of species richness on ecosystem functioning in a variable environment. This effect stems from temporal and spatial complementarity among species within metacommunities coupled with optimal levels of dispersal. Despite its importance in the context of global change by human activities, empirical evidence for ecological insurance remains scarce and controversial. Here we use natural aquatic bacterial communities to explore some of the predictions of the spatial and temporal aspects of the ecological insurance hypothesis. Addressing ecological insurance with bacterioplankton is of strong relevance given their central role in fundamental ecosystem processes. Our experimental set up consisted of water and bacterioplankton communities from two contrasting coastal lagoons. In order to mimic environmental fluctuations, the bacterioplankton community from one lagoon was successively transferred between tanks containing water from each of the two lagoons. We manipulated initial bacterial diversity for experimental communities and immigration during the experiment. We found that the abundance and production of bacterioplankton communities was higher and more stable (lower temporal variance) for treatments with high initial bacterial diversity. Immigration was only marginally beneficial to bacterial communities, probably because microbial communities operate at different time scales compared to the frequency of perturbation selected in this study, and of their intrinsic high physiologic plasticity. Such local "physiological insurance" may have a strong significance for the maintenance of bacterial abundance and production in the face of environmental perturbations.
format	article
author	Thierry Bouvier Patrick Venail Thomas Pommier Corinne Bouvier Claire Barbera Nicolas Mouquet
author_facet	Thierry Bouvier Patrick Venail Thomas Pommier Corinne Bouvier Claire Barbera Nicolas Mouquet
author_sort	Thierry Bouvier
title	Contrasted effects of diversity and immigration on ecological insurance in marine bacterioplankton communities.
title_short	Contrasted effects of diversity and immigration on ecological insurance in marine bacterioplankton communities.
title_full	Contrasted effects of diversity and immigration on ecological insurance in marine bacterioplankton communities.
title_fullStr	Contrasted effects of diversity and immigration on ecological insurance in marine bacterioplankton communities.
title_full_unstemmed	Contrasted effects of diversity and immigration on ecological insurance in marine bacterioplankton communities.
title_sort	contrasted effects of diversity and immigration on ecological insurance in marine bacterioplankton communities.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/b8d2221b64214ebd8be7111f6b87c964
work_keys_str_mv	AT thierrybouvier contrastedeffectsofdiversityandimmigrationonecologicalinsuranceinmarinebacterioplanktoncommunities AT patrickvenail contrastedeffectsofdiversityandimmigrationonecologicalinsuranceinmarinebacterioplanktoncommunities AT thomaspommier contrastedeffectsofdiversityandimmigrationonecologicalinsuranceinmarinebacterioplanktoncommunities AT corinnebouvier contrastedeffectsofdiversityandimmigrationonecologicalinsuranceinmarinebacterioplanktoncommunities AT clairebarbera contrastedeffectsofdiversityandimmigrationonecologicalinsuranceinmarinebacterioplanktoncommunities AT nicolasmouquet contrastedeffectsofdiversityandimmigrationonecologicalinsuranceinmarinebacterioplanktoncommunities
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Contrasted effects of diversity and immigration on ecological insurance in marine bacterioplankton communities.

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