Seasonality and landscape factors drive dissolved organic matter properties in Mediterranean ephemeral washes

Dissolved Organic Matter (DOM) is a fundamental component of the aquatic carbon cycle and a key driver of the biogeochemical interactions between terrestrial and aquatic ecosystems. The origin, properties and role of DOM are increasingly characterised in lakes, rivers and streams, but little is know...

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Autores: Catalán, Núria, Obrador, Biel, Alomar, Carme, Pretus, Joan Lluís
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/376889
Acceso en línea:http://hdl.handle.net/10261/376889
https://api.elsevier.com/content/abstract/scopus_id/84874734518
Access Level:acceso abierto
Palabra clave:Spectroscopic properties
Dissolved organic carbon (DOC)
Ephemeral streams
Mediterranean catchments
Seasonality
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spelling Seasonality and landscape factors drive dissolved organic matter properties in Mediterranean ephemeral washesCatalán, NúriaObrador, BielAlomar, CarmePretus, Joan LluísSpectroscopic propertiesDissolved organic carbon (DOC)Ephemeral streamsMediterranean catchmentsSeasonalityDissolved Organic Matter (DOM) is a fundamental component of the aquatic carbon cycle and a key driver of the biogeochemical interactions between terrestrial and aquatic ecosystems. The origin, properties and role of DOM are increasingly characterised in lakes, rivers and streams, but little is known about DOM characteristics in ephemeral washes, which are the most common water flows in Mediterranean landscapes. Here, we examine the patterns in the optical properties of DOM in ephemeral washes draining a small catchment in the island of Menorca, Western Mediterranean. We used concentration data (dissolved organic carbon and nitrogen) and several spectroscopic descriptors (SUVA254, absorption coefficient at 440 nm, fluorescence index, and excitation-emission fluorescence matrices) to assess changes in DOM concentrations and quality at both seasonal and spatial scales. Two periods were clearly distinguished in the DOM properties: autumn and winter-spring. In autumn, which includes the first flows of the hydrological year, DOM showed an aromatic character and was spatially homogenous over the catchment. In winter-spring, DOM was smaller and recently produced, and a considerable spatial heterogeneity was observed in all descriptors. The variability in DOM concentrations and quality was driven by hydromorphology and by the landscape features of the catchment, but the influence of these drivers on DOM properties changed along the hydrological year. In autumn, hydromorphology was the main factor determining DOM properties, whereas in winter-spring the land uses in the watershed highly determined the observed differences in DOM quality between subcatchments. © 2012 Springer Science+Business Media B.V.This study was funded by the project CGL2008-05095/BOS, from the Ministerio de Ciencia e Innovación (Spain). NC holds a doctoral fellowship (FI 2010–2013) from the Generalitat de Catalunya.Peer reviewedSpringer NatureMinisterio de Ciencia e Innovación (España)Generalitat de Catalunya202520252013info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/376889https://api.elsevier.com/content/abstract/scopus_id/84874734518reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MICINN//CGL2008-05095https://doi.org/10.1007/s10533-012-9723-2Noinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3768892026-05-22T06:33:51Z
dc.title.none.fl_str_mv Seasonality and landscape factors drive dissolved organic matter properties in Mediterranean ephemeral washes
title Seasonality and landscape factors drive dissolved organic matter properties in Mediterranean ephemeral washes
spellingShingle Seasonality and landscape factors drive dissolved organic matter properties in Mediterranean ephemeral washes
Catalán, Núria
Spectroscopic properties
Dissolved organic carbon (DOC)
Ephemeral streams
Mediterranean catchments
Seasonality
title_short Seasonality and landscape factors drive dissolved organic matter properties in Mediterranean ephemeral washes
title_full Seasonality and landscape factors drive dissolved organic matter properties in Mediterranean ephemeral washes
title_fullStr Seasonality and landscape factors drive dissolved organic matter properties in Mediterranean ephemeral washes
title_full_unstemmed Seasonality and landscape factors drive dissolved organic matter properties in Mediterranean ephemeral washes
title_sort Seasonality and landscape factors drive dissolved organic matter properties in Mediterranean ephemeral washes
dc.creator.none.fl_str_mv Catalán, Núria
Obrador, Biel
Alomar, Carme
Pretus, Joan Lluís
author Catalán, Núria
author_facet Catalán, Núria
Obrador, Biel
Alomar, Carme
Pretus, Joan Lluís
author_role author
author2 Obrador, Biel
Alomar, Carme
Pretus, Joan Lluís
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Generalitat de Catalunya
dc.subject.none.fl_str_mv Spectroscopic properties
Dissolved organic carbon (DOC)
Ephemeral streams
Mediterranean catchments
Seasonality
topic Spectroscopic properties
Dissolved organic carbon (DOC)
Ephemeral streams
Mediterranean catchments
Seasonality
description Dissolved Organic Matter (DOM) is a fundamental component of the aquatic carbon cycle and a key driver of the biogeochemical interactions between terrestrial and aquatic ecosystems. The origin, properties and role of DOM are increasingly characterised in lakes, rivers and streams, but little is known about DOM characteristics in ephemeral washes, which are the most common water flows in Mediterranean landscapes. Here, we examine the patterns in the optical properties of DOM in ephemeral washes draining a small catchment in the island of Menorca, Western Mediterranean. We used concentration data (dissolved organic carbon and nitrogen) and several spectroscopic descriptors (SUVA254, absorption coefficient at 440 nm, fluorescence index, and excitation-emission fluorescence matrices) to assess changes in DOM concentrations and quality at both seasonal and spatial scales. Two periods were clearly distinguished in the DOM properties: autumn and winter-spring. In autumn, which includes the first flows of the hydrological year, DOM showed an aromatic character and was spatially homogenous over the catchment. In winter-spring, DOM was smaller and recently produced, and a considerable spatial heterogeneity was observed in all descriptors. The variability in DOM concentrations and quality was driven by hydromorphology and by the landscape features of the catchment, but the influence of these drivers on DOM properties changed along the hydrological year. In autumn, hydromorphology was the main factor determining DOM properties, whereas in winter-spring the land uses in the watershed highly determined the observed differences in DOM quality between subcatchments. © 2012 Springer Science+Business Media B.V.
publishDate 2013
dc.date.none.fl_str_mv 2013
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/376889
https://api.elsevier.com/content/abstract/scopus_id/84874734518
url http://hdl.handle.net/10261/376889
https://api.elsevier.com/content/abstract/scopus_id/84874734518
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MICINN//CGL2008-05095
https://doi.org/10.1007/s10533-012-9723-2
No
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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