Organic matter characteristics in a Mediterranean stream through amino acid composition: Changes driven by intermittency

Amino acid composition (quality) and abundance (quantity) of organic matter (OM) in an intermittent Mediterranean stream were followed during transitions from wet to dry and dry to wet conditions. Amino acids were analyzed in benthic material (epilithic biofilms, sand sediments, leaf material) as we...

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Detalhes bibliográficos
Autores: Ylla i Monfort, Irene, Sanpera Calbet, Isis, Muñoz Gràcia, Isabel, Romaní i Cornet, Anna M., Sabater, Sergi
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:España
Recursos: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:10256/12522
Acesso em linha:http://hdl.handle.net/10256/12522
Access Level:acceso embargado
Palavra-chave:Aminoàcids
Amino acids
Humus
Biofilms
Biodegradació
Biodegradation
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spelling Organic matter characteristics in a Mediterranean stream through amino acid composition: Changes driven by intermittencyYlla i Monfort, IreneSanpera Calbet, IsisMuñoz Gràcia, IsabelRomaní i Cornet, Anna M.Sabater, SergiAminoàcidsAmino acidsHumusBiofilmsBiodegradacióBiodegradationAmino acid composition (quality) and abundance (quantity) of organic matter (OM) in an intermittent Mediterranean stream were followed during transitions from wet to dry and dry to wet conditions. Amino acids were analyzed in benthic material (epilithic biofilms, sand sediments, leaf material) as well as in the flowing water (dissolved organic matter, DOM). A principal component analysis and the estimation of the amino acid degradation index (DI) elucidated differences in amino acid composition and quality among the wet-drought-wet cycle. Amino acid content and composition were dependent on the source of OM as well as on its diagenetic state. The highest-quality OM (high DI and high N content) occurred on epilithic biofilms and the most degraded and lowest-quality OM occurred in sandy sediments. Differences between the pre- and post-drought periods were evident in DOM quality; autochthonous-derived material was predominant during the pre-drought (wet period preceding drying), while allochthonous inputs dominated during the post-drought period (wet period following drying). In contrast, benthic OM compartments were more stable, but benthic OM quality decreased continuously throughout the drought period. This study revealed that wet-drought-wet cycles resulted in subtle changes in benthic OM quality, and degradation of DOM was related to flow intermittencyThis study was funded by projects CGL2007-65549/BOS, CGL2008-05618-C02/BOS and Consolider-Ingenio CSD2009-00065 (SCARCE) of the Spanish Ministry of Science and InnovationSpringer VerlagMinisterio de Educación y Ciencia (Espanya)Ministerio de Ciencia e Innovación (Espanya)infoinfo2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10256/12522http://hdl.handle.net/10256/12522© Aquatic Sciences : Research Across Boundaries, 2011, vol. 73, p. 523-535Articles publicats (D-CCAA)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1007/s00027-011-0211-xinfo:eu-repo/semantics/altIdentifier/issn/1015-1621info:eu-repo/grantAgreement/MEC//CGL2007-65549info:eu-repo/grantAgreement/MICINN//CGL2008-05618-C02-01info:eu-repo/grantAgreement/MICINN//CSD2009-00065Tots els drets reservatsinfo:eu-repo/semantics/embargoedAccessoai:recercat.cat:10256/125222026-05-29T05:05:01Z
dc.title.none.fl_str_mv Organic matter characteristics in a Mediterranean stream through amino acid composition: Changes driven by intermittency
title Organic matter characteristics in a Mediterranean stream through amino acid composition: Changes driven by intermittency
spellingShingle Organic matter characteristics in a Mediterranean stream through amino acid composition: Changes driven by intermittency
Ylla i Monfort, Irene
Aminoàcids
Amino acids
Humus
Biofilms
Biodegradació
Biodegradation
title_short Organic matter characteristics in a Mediterranean stream through amino acid composition: Changes driven by intermittency
title_full Organic matter characteristics in a Mediterranean stream through amino acid composition: Changes driven by intermittency
title_fullStr Organic matter characteristics in a Mediterranean stream through amino acid composition: Changes driven by intermittency
title_full_unstemmed Organic matter characteristics in a Mediterranean stream through amino acid composition: Changes driven by intermittency
title_sort Organic matter characteristics in a Mediterranean stream through amino acid composition: Changes driven by intermittency
dc.creator.none.fl_str_mv Ylla i Monfort, Irene
Sanpera Calbet, Isis
Muñoz Gràcia, Isabel
Romaní i Cornet, Anna M.
Sabater, Sergi
author Ylla i Monfort, Irene
author_facet Ylla i Monfort, Irene
Sanpera Calbet, Isis
Muñoz Gràcia, Isabel
Romaní i Cornet, Anna M.
Sabater, Sergi
author_role author
author2 Sanpera Calbet, Isis
Muñoz Gràcia, Isabel
Romaní i Cornet, Anna M.
Sabater, Sergi
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Educación y Ciencia (Espanya)
Ministerio de Ciencia e Innovación (Espanya)
dc.subject.none.fl_str_mv Aminoàcids
Amino acids
Humus
Biofilms
Biodegradació
Biodegradation
topic Aminoàcids
Amino acids
Humus
Biofilms
Biodegradació
Biodegradation
description Amino acid composition (quality) and abundance (quantity) of organic matter (OM) in an intermittent Mediterranean stream were followed during transitions from wet to dry and dry to wet conditions. Amino acids were analyzed in benthic material (epilithic biofilms, sand sediments, leaf material) as well as in the flowing water (dissolved organic matter, DOM). A principal component analysis and the estimation of the amino acid degradation index (DI) elucidated differences in amino acid composition and quality among the wet-drought-wet cycle. Amino acid content and composition were dependent on the source of OM as well as on its diagenetic state. The highest-quality OM (high DI and high N content) occurred on epilithic biofilms and the most degraded and lowest-quality OM occurred in sandy sediments. Differences between the pre- and post-drought periods were evident in DOM quality; autochthonous-derived material was predominant during the pre-drought (wet period preceding drying), while allochthonous inputs dominated during the post-drought period (wet period following drying). In contrast, benthic OM compartments were more stable, but benthic OM quality decreased continuously throughout the drought period. This study revealed that wet-drought-wet cycles resulted in subtle changes in benthic OM quality, and degradation of DOM was related to flow intermittency
publishDate 2011
dc.date.none.fl_str_mv 2011
info
info
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 http://hdl.handle.net/10256/12522
http://hdl.handle.net/10256/12522
url http://hdl.handle.net/10256/12522
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s00027-011-0211-x
info:eu-repo/semantics/altIdentifier/issn/1015-1621
info:eu-repo/grantAgreement/MEC//CGL2007-65549
info:eu-repo/grantAgreement/MICINN//CGL2008-05618-C02-01
info:eu-repo/grantAgreement/MICINN//CSD2009-00065
dc.rights.none.fl_str_mv Tots els drets reservats
info:eu-repo/semantics/embargoedAccess
rights_invalid_str_mv Tots els drets reservats
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
dc.source.none.fl_str_mv © Aquatic Sciences : Research Across Boundaries, 2011, vol. 73, p. 523-535
Articles publicats (D-CCAA)
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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