Environmental filtering and limiting similarity as main forces driving diatom community structure in Mediterranean and continental temporary and perennial streams

Detalhes bibliográficos
Autor(a) principal: Várbíró, Gábor
Data de Publicação: 2020
Outros Autores: Borics, Gábor, Novais, Maria Helena, Morais, Maria Manuela, Rimet, Frédéric, Bouchez, Agnès, Tapolczai, Kálmán, Bácsi, István, Usseglio-Polatera, Philippe, B-Béres, Viktória
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/28956
https://doi.org/10.1016/j.scitotenv.2020.140459
Resumo: Climatic extreme events such as droughts (unpredictable), dry periods (predictable) or even flush floods, threaten freshwater ecosystemsworldwide. The filtering mechanisms of these events and their strength on communities, however, can be different among regions. While time-for-adaptation theory defines whether or not water scarcity can be considered as disturbance, the stress-dominance theory predicts an increase in importance of environmental filtering and a decrease in the role of biotic interactions in communities with increasing environmental stress. Here, we testedwhether environmental filtering (leading to trait convergence) or limiting similarity (leading to trait divergence) is the main assembly rule shaping the structure and trait composition of benthic diatom assemblages in Mediterranean (Portuguese) and continental (Hungarian) temporary and perennial streams.We assumed that the trait composition of diatomassemblages in the two stream typeswould be less different in the Mediterranean than in the continental region (addressed to time-for-adaptation theory). We also hypothesized that trait composition would be shaped by environmental filtering in the Hungarian streams while by biotic interactions in Portuguese streams (addressed to stress-dominance theory). Our results supported our first hypothesis since traits, which associated primarily to temporary streams were found only in the continental region. Our findings, however, only partially proved the stress-dominance hypothesis. In the continental region,where drying up of streamswere induced by unpredictable droughts, biotic interactionswere the main assembly rules shaping community structure. In contrast, environmental filtering was nearly as important as limiting similarity in structuring trait composition in the Mediterranean region during the predictable dry phasewith no superficial flow. These analyses also highlighted that drought events (both predictable and unpredictable ones) have a complex and strong influence on benthic diatom assemblages resulting even in irreversible changes in trait composition and thereby in ecosystem functioning.
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spelling Environmental filtering and limiting similarity as main forces driving diatom community structure in Mediterranean and continental temporary and perennial streamsTemporary streamsMediterranean and continental regionsDiatomsLimiting similarityEnvironmental filteringClimatic extreme events such as droughts (unpredictable), dry periods (predictable) or even flush floods, threaten freshwater ecosystemsworldwide. The filtering mechanisms of these events and their strength on communities, however, can be different among regions. While time-for-adaptation theory defines whether or not water scarcity can be considered as disturbance, the stress-dominance theory predicts an increase in importance of environmental filtering and a decrease in the role of biotic interactions in communities with increasing environmental stress. Here, we testedwhether environmental filtering (leading to trait convergence) or limiting similarity (leading to trait divergence) is the main assembly rule shaping the structure and trait composition of benthic diatom assemblages in Mediterranean (Portuguese) and continental (Hungarian) temporary and perennial streams.We assumed that the trait composition of diatomassemblages in the two stream typeswould be less different in the Mediterranean than in the continental region (addressed to time-for-adaptation theory). We also hypothesized that trait composition would be shaped by environmental filtering in the Hungarian streams while by biotic interactions in Portuguese streams (addressed to stress-dominance theory). Our results supported our first hypothesis since traits, which associated primarily to temporary streams were found only in the continental region. Our findings, however, only partially proved the stress-dominance hypothesis. In the continental region,where drying up of streamswere induced by unpredictable droughts, biotic interactionswere the main assembly rules shaping community structure. In contrast, environmental filtering was nearly as important as limiting similarity in structuring trait composition in the Mediterranean region during the predictable dry phasewith no superficial flow. These analyses also highlighted that drought events (both predictable and unpredictable ones) have a complex and strong influence on benthic diatom assemblages resulting even in irreversible changes in trait composition and thereby in ecosystem functioning.This paper supported from COST Action CA15113 (SMIRES, Science and Management of Intermittent rivers and Ephemeral streams; www. smires.eu) supported by COST (European Cooperation in Science and Technology) and by the Portuguese Foundation for Science and Technology (FCT) project UIDB/04683/2020 - ICT (Institute of Earth Sciences) and by the European Union through the European Regional Development Fund, included in the COMPETE 2020 (Operational Program Competitiveness and Internationalization) through the ALOP (ALT20-03-0145- FEDER-000004) project. Authors are financially supported by the GINOP 2.3.2-15-2016-00019 project and by NKFIH FK 132 142, FK 131 917 and K 132 150 grants. MHN was supported by Fundação para a Ciência e a Tecnologia – Portugal (PhD grant SFRH/BD/21625/2005), by the Fonds National de la Recherche du Luxembourg (grant AFR, PHD-09-120) and by the Public Research Centre - Gabriel Lippmann (Luxembourg).Elsevier2021-01-28T22:36:21Z2021-01-282020-06-23T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/28956http://hdl.handle.net/10174/28956https://doi.org/10.1016/j.scitotenv.2020.140459engVárbíró G., Borics G., Novais M.H., Morais M.M., Rimet F., Bouchez A., Tapolczai K., Bácsi I., Usseglio-Polatera P. & V. B-Béres (2020). Environmental filtering and limiting similarity as main forces driving diatom community structure in Mediterranean and continental temporary and perennial streams. Science of the Total Environment 741: 140459varbirog@gmail.comboricsg@gmail.comhnovais@uevora.ptmmorais@uevora.ptfrederic.rimet@inra.fragnes.bouchez@inra.frtapolczai.kalman@almos.uni-pannon.huistvanbacsi@gmail.comphilippe.usseglio-polatera@univ-lorraine.frberes.viktoria@gmail.com221Várbíró, GáborBorics, GáborNovais, Maria HelenaMorais, Maria ManuelaRimet, FrédéricBouchez, AgnèsTapolczai, KálmánBácsi, IstvánUsseglio-Polatera, PhilippeB-Béres, Viktóriainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:25:47Zoai:dspace.uevora.pt:10174/28956Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:18:47.932650Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Environmental filtering and limiting similarity as main forces driving diatom community structure in Mediterranean and continental temporary and perennial streams
title Environmental filtering and limiting similarity as main forces driving diatom community structure in Mediterranean and continental temporary and perennial streams
spellingShingle Environmental filtering and limiting similarity as main forces driving diatom community structure in Mediterranean and continental temporary and perennial streams
Várbíró, Gábor
Temporary streams
Mediterranean and continental regions
Diatoms
Limiting similarity
Environmental filtering
title_short Environmental filtering and limiting similarity as main forces driving diatom community structure in Mediterranean and continental temporary and perennial streams
title_full Environmental filtering and limiting similarity as main forces driving diatom community structure in Mediterranean and continental temporary and perennial streams
title_fullStr Environmental filtering and limiting similarity as main forces driving diatom community structure in Mediterranean and continental temporary and perennial streams
title_full_unstemmed Environmental filtering and limiting similarity as main forces driving diatom community structure in Mediterranean and continental temporary and perennial streams
title_sort Environmental filtering and limiting similarity as main forces driving diatom community structure in Mediterranean and continental temporary and perennial streams
author Várbíró, Gábor
author_facet Várbíró, Gábor
Borics, Gábor
Novais, Maria Helena
Morais, Maria Manuela
Rimet, Frédéric
Bouchez, Agnès
Tapolczai, Kálmán
Bácsi, István
Usseglio-Polatera, Philippe
B-Béres, Viktória
author_role author
author2 Borics, Gábor
Novais, Maria Helena
Morais, Maria Manuela
Rimet, Frédéric
Bouchez, Agnès
Tapolczai, Kálmán
Bácsi, István
Usseglio-Polatera, Philippe
B-Béres, Viktória
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Várbíró, Gábor
Borics, Gábor
Novais, Maria Helena
Morais, Maria Manuela
Rimet, Frédéric
Bouchez, Agnès
Tapolczai, Kálmán
Bácsi, István
Usseglio-Polatera, Philippe
B-Béres, Viktória
dc.subject.por.fl_str_mv Temporary streams
Mediterranean and continental regions
Diatoms
Limiting similarity
Environmental filtering
topic Temporary streams
Mediterranean and continental regions
Diatoms
Limiting similarity
Environmental filtering
description Climatic extreme events such as droughts (unpredictable), dry periods (predictable) or even flush floods, threaten freshwater ecosystemsworldwide. The filtering mechanisms of these events and their strength on communities, however, can be different among regions. While time-for-adaptation theory defines whether or not water scarcity can be considered as disturbance, the stress-dominance theory predicts an increase in importance of environmental filtering and a decrease in the role of biotic interactions in communities with increasing environmental stress. Here, we testedwhether environmental filtering (leading to trait convergence) or limiting similarity (leading to trait divergence) is the main assembly rule shaping the structure and trait composition of benthic diatom assemblages in Mediterranean (Portuguese) and continental (Hungarian) temporary and perennial streams.We assumed that the trait composition of diatomassemblages in the two stream typeswould be less different in the Mediterranean than in the continental region (addressed to time-for-adaptation theory). We also hypothesized that trait composition would be shaped by environmental filtering in the Hungarian streams while by biotic interactions in Portuguese streams (addressed to stress-dominance theory). Our results supported our first hypothesis since traits, which associated primarily to temporary streams were found only in the continental region. Our findings, however, only partially proved the stress-dominance hypothesis. In the continental region,where drying up of streamswere induced by unpredictable droughts, biotic interactionswere the main assembly rules shaping community structure. In contrast, environmental filtering was nearly as important as limiting similarity in structuring trait composition in the Mediterranean region during the predictable dry phasewith no superficial flow. These analyses also highlighted that drought events (both predictable and unpredictable ones) have a complex and strong influence on benthic diatom assemblages resulting even in irreversible changes in trait composition and thereby in ecosystem functioning.
publishDate 2020
dc.date.none.fl_str_mv 2020-06-23T00:00:00Z
2021-01-28T22:36:21Z
2021-01-28
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/28956
http://hdl.handle.net/10174/28956
https://doi.org/10.1016/j.scitotenv.2020.140459
url http://hdl.handle.net/10174/28956
https://doi.org/10.1016/j.scitotenv.2020.140459
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Várbíró G., Borics G., Novais M.H., Morais M.M., Rimet F., Bouchez A., Tapolczai K., Bácsi I., Usseglio-Polatera P. & V. B-Béres (2020). Environmental filtering and limiting similarity as main forces driving diatom community structure in Mediterranean and continental temporary and perennial streams. Science of the Total Environment 741: 140459
varbirog@gmail.com
boricsg@gmail.com
hnovais@uevora.pt
mmorais@uevora.pt
frederic.rimet@inra.fr
agnes.bouchez@inra.fr
tapolczai.kalman@almos.uni-pannon.hu
istvanbacsi@gmail.com
philippe.usseglio-polatera@univ-lorraine.fr
beres.viktoria@gmail.com
221
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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