Environmental filtering and limiting similarity as main forces driving diatom community structure in Mediterranean and continental temporary and perennial streams
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , , , |
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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7160 |
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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 |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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