Submarine groundwater discharge as a source of nutrients and trace metals in a Mediterranean bay (Palma Beach, Balearic Islands)

Submarine Groundwater Discharge (SGD) from a detrital coastal aquifer into the adjacent marine environment was investigated in a Mediterranean bay (Palma Beach, Balearic Islands). In this region, agriculture and tourism are potential sources of groundwater contamination. A survey in the Palma Beach...

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Authors: Rodellas, Valentí|||0000-0002-5896-9987, García Orellana, Jordi|||0000-0002-0543-2641, Tovar Sánchez, Antonio, Basterretxea, Gotzon, López-Garcia, José M., Sánchez-Quiles, David, Garcia-Solsona, Ester|||0000-0003-4136-9165, Masqué Barri, Pere|||0000-0002-1789-320X
Format: article
Publication Date:2014
Country:España
Institution:Universitat Autònoma de Barcelona
Repository:Dipòsit Digital de Documents de la UAB
Language:English
OAI Identifier:oai:ddd.uab.cat:240974
Online Access:https://ddd.uab.cat/record/240974
https://dx.doi.org/urn:doi:10.1016/j.marchem.2014.01.007
Access Level:Open access
Keyword:Submarine Groundwater Discharge (SGD)
Nitrogen
Phosphorus
Iron
Metals
Mediterranean
Radium isotopes
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spelling Submarine groundwater discharge as a source of nutrients and trace metals in a Mediterranean bay (Palma Beach, Balearic Islands)Rodellas, Valentí|||0000-0002-5896-9987García Orellana, Jordi|||0000-0002-0543-2641Tovar Sánchez, AntonioBasterretxea, GotzonLópez-Garcia, José M.Sánchez-Quiles, DavidGarcia-Solsona, Ester|||0000-0003-4136-9165Masqué Barri, Pere|||0000-0002-1789-320XSubmarine Groundwater Discharge (SGD)NitrogenPhosphorusIronMetalsMediterraneanRadium isotopesSubmarine Groundwater Discharge (SGD) from a detrital coastal aquifer into the adjacent marine environment was investigated in a Mediterranean bay (Palma Beach, Balearic Islands). In this region, agriculture and tourism are potential sources of groundwater contamination. A survey in the Palma Beach revealed N, Fe and chlorophyll a enhancement associated to areas of preferential groundwater discharge from the nearby coastal aquifer. Groundwater sampling from wells and coastal piezometers indicated high concentrations of dissolved inorganic nitrogen and Fe (up to 2800μmolL-1 and 8100nmolL-1, respectively). Other nutrients, such as DIP, and trace elements were not particularly elevated, which is attributed to the adsorptive characteristics of the carbonated composition of this detrital aquifer and/or the lack of major sources. Cross-shore gradients of 223,224,226Ra isotopes indicated a diffusive shore-based source of these radionuclides and allowed estimates of a SGD flow of 56,000±13,000m3d-1. Our results show that SGD is a major pathway for delivering DIN (1900mmolm-1d-1), dissolved Fe (4.1mmolm-1d-1) and, to a lesser extent, DIP (16mmolm-1d-1) into the nearshore waters. This allochthonous input may sustain a substantial phytoplankton biomass resulting in an onshore-offshore gradient (4.7-7.1mgm-3 in nearshore seawater as compared with <1mgm-3 in offshore stations). This work emphasizes the relevance of SGD-driven nutrient and trace metal inputs in the regulation of nearshore phytoplankton communities of oligotrophic areas. 22014-01-0120142014-01-01Articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/240974https://dx.doi.org/urn:doi:10.1016/j.marchem.2014.01.007reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengMinisterio de Ciencia e Innovación https://doi.org/10.13039/501100004837 CGL2008-00047/BTEMinisterio de Economía y Competitividad https://doi.org/10.13039/501100003329 CTM2012-39476-C02-01Ministerio de Educación, Cultura y Deporte https://doi.org/10.13039/501100003176 AP2008-03044Ministerio de Educación EX2009-0651open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2409742026-06-06T12:50:31Z
dc.title.none.fl_str_mv Submarine groundwater discharge as a source of nutrients and trace metals in a Mediterranean bay (Palma Beach, Balearic Islands)
title Submarine groundwater discharge as a source of nutrients and trace metals in a Mediterranean bay (Palma Beach, Balearic Islands)
spellingShingle Submarine groundwater discharge as a source of nutrients and trace metals in a Mediterranean bay (Palma Beach, Balearic Islands)
Rodellas, Valentí|||0000-0002-5896-9987
Submarine Groundwater Discharge (SGD)
Nitrogen
Phosphorus
Iron
Metals
Mediterranean
Radium isotopes
title_short Submarine groundwater discharge as a source of nutrients and trace metals in a Mediterranean bay (Palma Beach, Balearic Islands)
title_full Submarine groundwater discharge as a source of nutrients and trace metals in a Mediterranean bay (Palma Beach, Balearic Islands)
title_fullStr Submarine groundwater discharge as a source of nutrients and trace metals in a Mediterranean bay (Palma Beach, Balearic Islands)
title_full_unstemmed Submarine groundwater discharge as a source of nutrients and trace metals in a Mediterranean bay (Palma Beach, Balearic Islands)
title_sort Submarine groundwater discharge as a source of nutrients and trace metals in a Mediterranean bay (Palma Beach, Balearic Islands)
dc.creator.none.fl_str_mv Rodellas, Valentí|||0000-0002-5896-9987
García Orellana, Jordi|||0000-0002-0543-2641
Tovar Sánchez, Antonio
Basterretxea, Gotzon
López-Garcia, José M.
Sánchez-Quiles, David
Garcia-Solsona, Ester|||0000-0003-4136-9165
Masqué Barri, Pere|||0000-0002-1789-320X
author Rodellas, Valentí|||0000-0002-5896-9987
author_facet Rodellas, Valentí|||0000-0002-5896-9987
García Orellana, Jordi|||0000-0002-0543-2641
Tovar Sánchez, Antonio
Basterretxea, Gotzon
López-Garcia, José M.
Sánchez-Quiles, David
Garcia-Solsona, Ester|||0000-0003-4136-9165
Masqué Barri, Pere|||0000-0002-1789-320X
author_role author
author2 García Orellana, Jordi|||0000-0002-0543-2641
Tovar Sánchez, Antonio
Basterretxea, Gotzon
López-Garcia, José M.
Sánchez-Quiles, David
Garcia-Solsona, Ester|||0000-0003-4136-9165
Masqué Barri, Pere|||0000-0002-1789-320X
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Submarine Groundwater Discharge (SGD)
Nitrogen
Phosphorus
Iron
Metals
Mediterranean
Radium isotopes
topic Submarine Groundwater Discharge (SGD)
Nitrogen
Phosphorus
Iron
Metals
Mediterranean
Radium isotopes
description Submarine Groundwater Discharge (SGD) from a detrital coastal aquifer into the adjacent marine environment was investigated in a Mediterranean bay (Palma Beach, Balearic Islands). In this region, agriculture and tourism are potential sources of groundwater contamination. A survey in the Palma Beach revealed N, Fe and chlorophyll a enhancement associated to areas of preferential groundwater discharge from the nearby coastal aquifer. Groundwater sampling from wells and coastal piezometers indicated high concentrations of dissolved inorganic nitrogen and Fe (up to 2800μmolL-1 and 8100nmolL-1, respectively). Other nutrients, such as DIP, and trace elements were not particularly elevated, which is attributed to the adsorptive characteristics of the carbonated composition of this detrital aquifer and/or the lack of major sources. Cross-shore gradients of 223,224,226Ra isotopes indicated a diffusive shore-based source of these radionuclides and allowed estimates of a SGD flow of 56,000±13,000m3d-1. Our results show that SGD is a major pathway for delivering DIN (1900mmolm-1d-1), dissolved Fe (4.1mmolm-1d-1) and, to a lesser extent, DIP (16mmolm-1d-1) into the nearshore waters. This allochthonous input may sustain a substantial phytoplankton biomass resulting in an onshore-offshore gradient (4.7-7.1mgm-3 in nearshore seawater as compared with <1mgm-3 in offshore stations). This work emphasizes the relevance of SGD-driven nutrient and trace metal inputs in the regulation of nearshore phytoplankton communities of oligotrophic areas.
publishDate 2014
dc.date.none.fl_str_mv 2
2014-01-01
2014
2014-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/240974
https://dx.doi.org/urn:doi:10.1016/j.marchem.2014.01.007
url https://ddd.uab.cat/record/240974
https://dx.doi.org/urn:doi:10.1016/j.marchem.2014.01.007
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Ciencia e Innovación https://doi.org/10.13039/501100004837 CGL2008-00047/BTE
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 CTM2012-39476-C02-01
Ministerio de Educación, Cultura y Deporte https://doi.org/10.13039/501100003176 AP2008-03044
Ministerio de Educación EX2009-0651
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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