Modelling nitrogen and phosphorus loads in a Mediterranean river catchment (La Tordera, NE Spain)

Human activities have resulted in increased nutrient levels in many rivers all over Europe. Sustainable management of river basins demands an assessment of the causes and consequences of human alteration of nutrient flows, together with an evaluation of management options. In the context of an integ...

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Detalles Bibliográficos
Autores: Caille, F., Riera, Joan Lluís, Rosell-Melé, A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/98169
Acceso en línea:https://hdl.handle.net/2445/98169
Access Level:acceso abierto
Palabra clave:Tordera (Catalunya : Curs d'aigua)
Nitrogen
Fòsfor
Tordera River (Catalonia)
Phosphorus
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spelling Modelling nitrogen and phosphorus loads in a Mediterranean river catchment (La Tordera, NE Spain)Caille, F.Riera, Joan LluísRosell-Melé, A.Tordera (Catalunya : Curs d'aigua)NitrogenFòsforTordera River (Catalonia)NitrogenPhosphorusHuman activities have resulted in increased nutrient levels in many rivers all over Europe. Sustainable management of river basins demands an assessment of the causes and consequences of human alteration of nutrient flows, together with an evaluation of management options. In the context of an integrated and interdisciplinary environmental assessment (IEA) of nutrient flows, we present and discuss the application of the nutrient emission model MONERIS (MOdelling Nutrient Emissions into River Systems) to the Catalan river basin, La Tordera (north-east Spain), for the period 1996-2002. After a successful calibration and verification process (Nash-Sutcliffe efficiencies E=0.85 for phosphorus and E=0.86 for nitrogen), the application of the model MONERIS proved to be useful in estimating nutrient loads. Crucial for model calibration, in-stream retention was estimated to be about 50 % of nutrient emissions on an annual basis. Through this process, we identified the importance of point sources for phosphorus emissions (about 94% for 1996-2002), and diffuse sources, especially inputs via groundwater, for nitrogen emissions (about 31% for 1996-2002). Despite hurdles related to model structure, observed loads, and input data encountered during the modelling process, MONERIS provided a good representation of the major interannual and spatial patterns in nutrient emissions. An analysis of the model uncertainty and sensitivity to input data indicates that the model MONERIS, even in data-starved Mediterranean catchments, may be profitably used by water managers for evaluating quantitative nutrient emission scenarios for the purpose of managing river basins. As an example of scenario modelling, an analysis of the changes in nutrient emissions through two different future scenarios allowed the identification of a set of relevant measures to reduce nutrient loads.European Geosciences Union (EGU)2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/98169Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésinfo:eu-repo/semantics/altIdentifier/doi/10.5194/hess-16-2417-2012Reproducció del document publicat a: http://dx.doi.org/10.5194/hess-16-2417-2012Hydrology and Earth System Sciences Discussions , 2011, vol. 16, num. 8, p. 2417-2435http://dx.doi.org/10.5194/hess-16-2417-2012info:eu-repo/grantAgreement/EC/FP7/244121cc-by (c) Caille, F. et al., 2011http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/981692026-05-27T06:46:51Z
dc.title.none.fl_str_mv Modelling nitrogen and phosphorus loads in a Mediterranean river catchment (La Tordera, NE Spain)
title Modelling nitrogen and phosphorus loads in a Mediterranean river catchment (La Tordera, NE Spain)
spellingShingle Modelling nitrogen and phosphorus loads in a Mediterranean river catchment (La Tordera, NE Spain)
Caille, F.
Tordera (Catalunya : Curs d'aigua)
Nitrogen
Fòsfor
Tordera River (Catalonia)
Nitrogen
Phosphorus
title_short Modelling nitrogen and phosphorus loads in a Mediterranean river catchment (La Tordera, NE Spain)
title_full Modelling nitrogen and phosphorus loads in a Mediterranean river catchment (La Tordera, NE Spain)
title_fullStr Modelling nitrogen and phosphorus loads in a Mediterranean river catchment (La Tordera, NE Spain)
title_full_unstemmed Modelling nitrogen and phosphorus loads in a Mediterranean river catchment (La Tordera, NE Spain)
title_sort Modelling nitrogen and phosphorus loads in a Mediterranean river catchment (La Tordera, NE Spain)
dc.creator.none.fl_str_mv Caille, F.
Riera, Joan Lluís
Rosell-Melé, A.
author Caille, F.
author_facet Caille, F.
Riera, Joan Lluís
Rosell-Melé, A.
author_role author
author2 Riera, Joan Lluís
Rosell-Melé, A.
author2_role author
author
dc.subject.none.fl_str_mv Tordera (Catalunya : Curs d'aigua)
Nitrogen
Fòsfor
Tordera River (Catalonia)
Nitrogen
Phosphorus
topic Tordera (Catalunya : Curs d'aigua)
Nitrogen
Fòsfor
Tordera River (Catalonia)
Nitrogen
Phosphorus
description Human activities have resulted in increased nutrient levels in many rivers all over Europe. Sustainable management of river basins demands an assessment of the causes and consequences of human alteration of nutrient flows, together with an evaluation of management options. In the context of an integrated and interdisciplinary environmental assessment (IEA) of nutrient flows, we present and discuss the application of the nutrient emission model MONERIS (MOdelling Nutrient Emissions into River Systems) to the Catalan river basin, La Tordera (north-east Spain), for the period 1996-2002. After a successful calibration and verification process (Nash-Sutcliffe efficiencies E=0.85 for phosphorus and E=0.86 for nitrogen), the application of the model MONERIS proved to be useful in estimating nutrient loads. Crucial for model calibration, in-stream retention was estimated to be about 50 % of nutrient emissions on an annual basis. Through this process, we identified the importance of point sources for phosphorus emissions (about 94% for 1996-2002), and diffuse sources, especially inputs via groundwater, for nitrogen emissions (about 31% for 1996-2002). Despite hurdles related to model structure, observed loads, and input data encountered during the modelling process, MONERIS provided a good representation of the major interannual and spatial patterns in nutrient emissions. An analysis of the model uncertainty and sensitivity to input data indicates that the model MONERIS, even in data-starved Mediterranean catchments, may be profitably used by water managers for evaluating quantitative nutrient emission scenarios for the purpose of managing river basins. As an example of scenario modelling, an analysis of the changes in nutrient emissions through two different future scenarios allowed the identification of a set of relevant measures to reduce nutrient loads.
publishDate 2011
dc.date.none.fl_str_mv 2011
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/2445/98169
url https://hdl.handle.net/2445/98169
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.5194/hess-16-2417-2012
Reproducció del document publicat a: http://dx.doi.org/10.5194/hess-16-2417-2012
Hydrology and Earth System Sciences Discussions , 2011, vol. 16, num. 8, p. 2417-2435
http://dx.doi.org/10.5194/hess-16-2417-2012
info:eu-repo/grantAgreement/EC/FP7/244121
dc.rights.none.fl_str_mv cc-by (c) Caille, F. et al., 2011
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Caille, F. et al., 2011
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv European Geosciences Union (EGU)
publisher.none.fl_str_mv European Geosciences Union (EGU)
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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