Contrary effects of flow intermittence and land uses on organic matter decomposition in a Mediterranean river basin

Flow interruption in intermittent rivers (IRs) generates a mosaic of terrestrial and aquatic habitats across the river network affecting ecosystem processes, as organic matter (OM) decomposition. Water use for farming in arid and semi-arid climates intensifies the dry conditions and affects local ri...

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Detalles Bibliográficos
Autores: Viza, Aida, Muñoz Gràcia, Isabel, Oliva Cuyàs, Francesc, Menéndez López, Margarita
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/183538
Acceso en línea:https://hdl.handle.net/2445/183538
Access Level:acceso abierto
Palabra clave:Fongs
Conques hidrogràfiques
Mediterrània (Regió)
Fungi
Watersheds
Mediterranean Region
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spelling Contrary effects of flow intermittence and land uses on organic matter decomposition in a Mediterranean river basinViza, AidaMuñoz Gràcia, IsabelOliva Cuyàs, FrancescMenéndez López, MargaritaFongsConques hidrogràfiquesMediterrània (Regió)FungiWatershedsMediterranean RegionFlow interruption in intermittent rivers (IRs) generates a mosaic of terrestrial and aquatic habitats across the river network affecting ecosystem processes, as organic matter (OM) decomposition. Water use for farming in arid and semi-arid climates intensifies the dry conditions and affects local river characteristics. In that way, flow intermittence and the distribution of land uses may affect the OM processing along the river. To understand the role of IRs in global OM dynamics and how global change affecting water flow regimes determines these dynamics, it is important to estimate OM-processing rates at a basin scale. The aim of this study was to evaluate the effect of the intensity of flow intermittence on OM processing, and how this effect was modulated by local environmental factors related to land uses across a Mediterranean river basin. To do this, wood decomposition (mass loss and fungal biomass) was selected as a functional indicator. Drying duration and frequency were measured to characterize flow intermittence in different reaches along the river, as well as local environmental factors. Linear models stablished the role of factors on decomposition. The results showed that differences in decomposition rates across the river network were negatively related to the duration of flow interruption. Dissolved inorganic nitrogen associated with agriculture counteracted the negative effect of intermittence on mass loss (increasing by up to three times); but with a higher duration of dry conditions, its effect was insignificant. An increase of 20% of canopy (higher in natural areas) resulted in increases of up to 5% of mass loss. Overall, our study is relevant to understanding the interaction between flow intermittence and land uses on OM processing, especially considering the intensification of flow intermittence and its increased distribution to other regions, which is expected to be a consequence of climate warming and human activities.Elsevier B.V.2022202220212022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion10 p.application/pdfhttps://hdl.handle.net/2445/183538Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1016/j.scitotenv.2021.151424Science of the Total Environment, 2021, vol. 812, p. 151424https://doi.org/10.1016/j.scitotenv.2021.151424cc-by-nc-nd (c) Viza, Aida et al., 2021https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1835382026-05-29T05:05:01Z
dc.title.none.fl_str_mv Contrary effects of flow intermittence and land uses on organic matter decomposition in a Mediterranean river basin
title Contrary effects of flow intermittence and land uses on organic matter decomposition in a Mediterranean river basin
spellingShingle Contrary effects of flow intermittence and land uses on organic matter decomposition in a Mediterranean river basin
Viza, Aida
Fongs
Conques hidrogràfiques
Mediterrània (Regió)
Fungi
Watersheds
Mediterranean Region
title_short Contrary effects of flow intermittence and land uses on organic matter decomposition in a Mediterranean river basin
title_full Contrary effects of flow intermittence and land uses on organic matter decomposition in a Mediterranean river basin
title_fullStr Contrary effects of flow intermittence and land uses on organic matter decomposition in a Mediterranean river basin
title_full_unstemmed Contrary effects of flow intermittence and land uses on organic matter decomposition in a Mediterranean river basin
title_sort Contrary effects of flow intermittence and land uses on organic matter decomposition in a Mediterranean river basin
dc.creator.none.fl_str_mv Viza, Aida
Muñoz Gràcia, Isabel
Oliva Cuyàs, Francesc
Menéndez López, Margarita
author Viza, Aida
author_facet Viza, Aida
Muñoz Gràcia, Isabel
Oliva Cuyàs, Francesc
Menéndez López, Margarita
author_role author
author2 Muñoz Gràcia, Isabel
Oliva Cuyàs, Francesc
Menéndez López, Margarita
author2_role author
author
author
dc.subject.none.fl_str_mv Fongs
Conques hidrogràfiques
Mediterrània (Regió)
Fungi
Watersheds
Mediterranean Region
topic Fongs
Conques hidrogràfiques
Mediterrània (Regió)
Fungi
Watersheds
Mediterranean Region
description Flow interruption in intermittent rivers (IRs) generates a mosaic of terrestrial and aquatic habitats across the river network affecting ecosystem processes, as organic matter (OM) decomposition. Water use for farming in arid and semi-arid climates intensifies the dry conditions and affects local river characteristics. In that way, flow intermittence and the distribution of land uses may affect the OM processing along the river. To understand the role of IRs in global OM dynamics and how global change affecting water flow regimes determines these dynamics, it is important to estimate OM-processing rates at a basin scale. The aim of this study was to evaluate the effect of the intensity of flow intermittence on OM processing, and how this effect was modulated by local environmental factors related to land uses across a Mediterranean river basin. To do this, wood decomposition (mass loss and fungal biomass) was selected as a functional indicator. Drying duration and frequency were measured to characterize flow intermittence in different reaches along the river, as well as local environmental factors. Linear models stablished the role of factors on decomposition. The results showed that differences in decomposition rates across the river network were negatively related to the duration of flow interruption. Dissolved inorganic nitrogen associated with agriculture counteracted the negative effect of intermittence on mass loss (increasing by up to three times); but with a higher duration of dry conditions, its effect was insignificant. An increase of 20% of canopy (higher in natural areas) resulted in increases of up to 5% of mass loss. Overall, our study is relevant to understanding the interaction between flow intermittence and land uses on OM processing, especially considering the intensification of flow intermittence and its increased distribution to other regions, which is expected to be a consequence of climate warming and human activities.
publishDate 2021
dc.date.none.fl_str_mv 2021
2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/183538
url https://hdl.handle.net/2445/183538
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1016/j.scitotenv.2021.151424
Science of the Total Environment, 2021, vol. 812, p. 151424
https://doi.org/10.1016/j.scitotenv.2021.151424
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Viza, Aida et al., 2021
https://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Viza, Aida et al., 2021
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 10 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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