Modelling nitrogen fluxes in oligotrophic environments: NW Mediterranean and NE Atlantic

22 páginas, 15 figuras, 3 tablas

Detalhes bibliográficos
Autores: Cruzado, Antonio, Bahamon, Nixon
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2003
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/136190
Acesso em linha:http://hdl.handle.net/10261/136190
Access Level:acceso abierto
Palavra-chave:Oligotrophic ecosystems
Comparative ecology
Nitrogen
Ecological modelling
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spelling Modelling nitrogen fluxes in oligotrophic environments: NW Mediterranean and NE AtlanticCruzado, AntonioBahamon, NixonOligotrophic ecosystemsComparative ecologyNitrogenEcological modelling22 páginas, 15 figuras, 3 tablasStocks and fluxes of nitrogen in two oligotrophic ecosystems are evaluated using a vertically resolved turbulence-driven ecological model. The model simulates the intra-annual variability of the ecological processes in the upper 300m of the water column in the Catalan Sea (CS), northwestern Mediterranean, and in the subtropical northeast Atlantic (NEA). Higher irradiance and daylight length making the euphotic layer thicker, together with a higher mixing layer depth explained that the phytoplankton maximum was deeper in NEA than in CS during summertime. In general, the amount of irradiance appears to control the chlorophyll maximum depth while the amount of nitrate transported from the bottom boundary is mainly constraining the phytoplankton stocks. The summer chlorophyll maximum was found at depths below the thermocline and close to the nitracline. In both locations, zooplankton grazing controlled the late winter phytoplankton bloom but reduced more than expected the subsurface phytoplankton concentration in summer. The nitritemaximumwas successfully simulated to be close to the chlorophyll maximum, explained by the phytoplankton reduction of nitrate in the dark. The yearly estimates of upward fluxes of nitrate to the euphotic zone were variable depending on the horizon at which fluxes were computed. Just below the euphotic zone, the upward fluxes of nitrate were 0.64 and 0.22 molNm−2 in the CS and NEA, respectively, more closely connected to the variation of the nitrogen gradient than to the density field.This work was partly funded by the European Commission through project MFSPP: Mediterranean Forecasting System, Pilot Project (MAS3-CT98-0171). The Spanish Agency for International Co-operation provided partial financial support for N.B.Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201620162003info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/136190reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/S0304-3800(03)00007-3Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1361902026-05-22T06:33:51Z
dc.title.none.fl_str_mv Modelling nitrogen fluxes in oligotrophic environments: NW Mediterranean and NE Atlantic
title Modelling nitrogen fluxes in oligotrophic environments: NW Mediterranean and NE Atlantic
spellingShingle Modelling nitrogen fluxes in oligotrophic environments: NW Mediterranean and NE Atlantic
Cruzado, Antonio
Oligotrophic ecosystems
Comparative ecology
Nitrogen
Ecological modelling
title_short Modelling nitrogen fluxes in oligotrophic environments: NW Mediterranean and NE Atlantic
title_full Modelling nitrogen fluxes in oligotrophic environments: NW Mediterranean and NE Atlantic
title_fullStr Modelling nitrogen fluxes in oligotrophic environments: NW Mediterranean and NE Atlantic
title_full_unstemmed Modelling nitrogen fluxes in oligotrophic environments: NW Mediterranean and NE Atlantic
title_sort Modelling nitrogen fluxes in oligotrophic environments: NW Mediterranean and NE Atlantic
dc.creator.none.fl_str_mv Cruzado, Antonio
Bahamon, Nixon
author Cruzado, Antonio
author_facet Cruzado, Antonio
Bahamon, Nixon
author_role author
author2 Bahamon, Nixon
author2_role author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Oligotrophic ecosystems
Comparative ecology
Nitrogen
Ecological modelling
topic Oligotrophic ecosystems
Comparative ecology
Nitrogen
Ecological modelling
description 22 páginas, 15 figuras, 3 tablas
publishDate 2003
dc.date.none.fl_str_mv 2003
2016
2016
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/10261/136190
url http://hdl.handle.net/10261/136190
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/S0304-3800(03)00007-3
Sí
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 Elsevier
publisher.none.fl_str_mv Elsevier
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
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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