Influence of groundwater exploitation on the ecological status of streams in a Mediterranean system (Selva Basin, NE Spain)

The ecological status of streams depends on an equilibrium between hydrological processes and biological dynamics. Water discharge is the main requisite for a wealthy riparian habitat. Nevertheless, human practices severely affect water availability through stream water derivation and groundwater wi...

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Detalles Bibliográficos
Autores: Menció i Domingo, Anna, Mas-Pla, Josep
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2010
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:10256/12911
Acceso en línea:http://hdl.handle.net/10256/12911
Access Level:acceso embargado
Palabra clave:Indicadors biològics
Indicators (Biology)
Aigua -- Química
Water chemistry
Aigües subterrànies
Groundwater
Recursos hidràulics -- Explotació
Water resources development
Hidrologia
Hydrology
id ES_ff2ae8a559aa09910f40dd296f0cf0f4
oai_identifier_str oai:recercat.cat:10256/12911
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Influence of groundwater exploitation on the ecological status of streams in a Mediterranean system (Selva Basin, NE Spain)
title Influence of groundwater exploitation on the ecological status of streams in a Mediterranean system (Selva Basin, NE Spain)
spellingShingle Influence of groundwater exploitation on the ecological status of streams in a Mediterranean system (Selva Basin, NE Spain)
Menció i Domingo, Anna
Indicadors biològics
Indicators (Biology)
Aigua -- Química
Water chemistry
Aigües subterrànies
Groundwater
Recursos hidràulics -- Explotació
Water resources development
Hidrologia
Hydrology
title_short Influence of groundwater exploitation on the ecological status of streams in a Mediterranean system (Selva Basin, NE Spain)
title_full Influence of groundwater exploitation on the ecological status of streams in a Mediterranean system (Selva Basin, NE Spain)
title_fullStr Influence of groundwater exploitation on the ecological status of streams in a Mediterranean system (Selva Basin, NE Spain)
title_full_unstemmed Influence of groundwater exploitation on the ecological status of streams in a Mediterranean system (Selva Basin, NE Spain)
title_sort Influence of groundwater exploitation on the ecological status of streams in a Mediterranean system (Selva Basin, NE Spain)
dc.creator.none.fl_str_mv Menció i Domingo, Anna
Mas-Pla, Josep
author Menció i Domingo, Anna
author_facet Menció i Domingo, Anna
Mas-Pla, Josep
author_role author
author2 Mas-Pla, Josep
author2_role author
dc.contributor.none.fl_str_mv Comisión Interministerial de Ciencia y Tecnología (Espanya)
Ministerio de Educación y Ciencia (Espanya)
dc.subject.none.fl_str_mv Indicadors biològics
Indicators (Biology)
Aigua -- Química
Water chemistry
Aigües subterrànies
Groundwater
Recursos hidràulics -- Explotació
Water resources development
Hidrologia
Hydrology
topic Indicadors biològics
Indicators (Biology)
Aigua -- Química
Water chemistry
Aigües subterrànies
Groundwater
Recursos hidràulics -- Explotació
Water resources development
Hidrologia
Hydrology
description The ecological status of streams depends on an equilibrium between hydrological processes and biological dynamics. Water discharge is the main requisite for a wealthy riparian habitat. Nevertheless, human practices severely affect water availability through stream water derivation and groundwater withdrawal. In this sense, impacts upon aquifer water storage and its effects on base flow generation have a significant effect on stream biology. Consequently, biological indicators will point out poor conditions resulting from such human impacts. In this paper, the effects of groundwater exploitation on stream discharge and surface water quality are evaluated and compared to biological indicators in a Mediterranean catchment. The stream-aquifer relationship is investigated by considering the hydrological context of each river reach, including human pressures, and the hydraulic head in the contiguous alluvial aquifer, where it exists. These data allow us to differentiate distinct types of reaches that are defined according to a "Stream-Aquifer relationship and chemical Pressure" (SAP) classification, which is used later on to standardize the different hydrochemical and biological features of the sampling points. Stream water and groundwater hydrochemistry are compared to depict the hydraulic behavior of the sampled watercourses during wet and dry periods. Specific elements are used as tracers of groundwater inputs, wastewater influence, or even stagnant conditions during the dry season. This dataset defines a framework to interpret the biological status of each reach based on the Iberian biological monitoring working party indicator (IBMWP). Affinities between hydrological and hydrochemical conditions with biological indicator values allow the causal effects of groundwater exploitation on stream ecology to be defined. The use of multivariate principal component analysis shows that the dataset variance is distributed according to the SAP classification, and that variable grouping is in agreement with the observed hydrological processes and their effects on biological indicator values. This work provides evidence of the importance of groundwater dynamics on biological indicators in a human-modified environment. When using the SAP classification, biological indicators acquire a broader meaning as they reveal the status of biological processes and the causal references. Such information is relevant for water management assessment within the context of the European Water Framework Directive, as it emphasizes the control of groundwater exploitation as a key parameter in the preservation of stream ecological status and the achievement of the objectives of the directive
publishDate 2010
dc.date.none.fl_str_mv 2010
info
info
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info:eu-repo/semantics/publishedVersion
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/12911
http://hdl.handle.net/10256/12911
url http://hdl.handle.net/10256/12911
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecolind.2010.02.001
info:eu-repo/semantics/altIdentifier/issn/1470-160X
MICYT/2005-2008/CGL2005-08019-C04-02
info:eu-repo/grantAgreement/MICINN//CGL2008-06373-C03-03
dc.rights.none.fl_str_mv Tots els drets reservats
info:eu-repo/semantics/embargoedAccess
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eu_rights_str_mv embargoedAccess
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dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv © Ecological Indicators, 2010, vol. 10, núm. 5, p. 915-926
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
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spelling Influence of groundwater exploitation on the ecological status of streams in a Mediterranean system (Selva Basin, NE Spain)Menció i Domingo, AnnaMas-Pla, JosepIndicadors biològicsIndicators (Biology)Aigua -- QuímicaWater chemistryAigües subterràniesGroundwaterRecursos hidràulics -- ExplotacióWater resources developmentHidrologiaHydrologyThe ecological status of streams depends on an equilibrium between hydrological processes and biological dynamics. Water discharge is the main requisite for a wealthy riparian habitat. Nevertheless, human practices severely affect water availability through stream water derivation and groundwater withdrawal. In this sense, impacts upon aquifer water storage and its effects on base flow generation have a significant effect on stream biology. Consequently, biological indicators will point out poor conditions resulting from such human impacts. In this paper, the effects of groundwater exploitation on stream discharge and surface water quality are evaluated and compared to biological indicators in a Mediterranean catchment. The stream-aquifer relationship is investigated by considering the hydrological context of each river reach, including human pressures, and the hydraulic head in the contiguous alluvial aquifer, where it exists. These data allow us to differentiate distinct types of reaches that are defined according to a "Stream-Aquifer relationship and chemical Pressure" (SAP) classification, which is used later on to standardize the different hydrochemical and biological features of the sampling points. Stream water and groundwater hydrochemistry are compared to depict the hydraulic behavior of the sampled watercourses during wet and dry periods. Specific elements are used as tracers of groundwater inputs, wastewater influence, or even stagnant conditions during the dry season. This dataset defines a framework to interpret the biological status of each reach based on the Iberian biological monitoring working party indicator (IBMWP). Affinities between hydrological and hydrochemical conditions with biological indicator values allow the causal effects of groundwater exploitation on stream ecology to be defined. The use of multivariate principal component analysis shows that the dataset variance is distributed according to the SAP classification, and that variable grouping is in agreement with the observed hydrological processes and their effects on biological indicator values. This work provides evidence of the importance of groundwater dynamics on biological indicators in a human-modified environment. When using the SAP classification, biological indicators acquire a broader meaning as they reveal the status of biological processes and the causal references. Such information is relevant for water management assessment within the context of the European Water Framework Directive, as it emphasizes the control of groundwater exploitation as a key parameter in the preservation of stream ecological status and the achievement of the objectives of the directiveThis project was funded by grants from Spanish Government research projects CICYT CGL-2005-08019-C04-02 and CGL2008-06373-C03-03/BTE, and from the Patronat Francesc Eiximenis grant (Diputació de Girona)ElsevierComisión Interministerial de Ciencia y Tecnología (Espanya)Ministerio de Educación y Ciencia (Espanya)infoinfo2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10256/12911http://hdl.handle.net/10256/12911© Ecological Indicators, 2010, vol. 10, núm. 5, p. 915-926Articles 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/10.1016/j.ecolind.2010.02.001info:eu-repo/semantics/altIdentifier/issn/1470-160XMICYT/2005-2008/CGL2005-08019-C04-02info:eu-repo/grantAgreement/MICINN//CGL2008-06373-C03-03Tots els drets reservatsinfo:eu-repo/semantics/embargoedAccessoai:recercat.cat:10256/129112026-05-29T05:05:01Z
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