Effects of external nutrient sources and extreme weather events on the nutrient budget of a Southern European coastal lagoon

Detalhes bibliográficos
Autor(a) principal: Malta, Erik-jan
Data de Publicação: 2017
Outros Autores: Stigter, Tibor Y., Pacheco, André, Carvalho Dill, Amélia, Tavares, Diogo, Santos, Rui
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/11620
Resumo: The seasonal and annual nitrogen (N), phosphorus (P), and carbon (C) budgets of the mesotidal Ria Formosa lagoon, southern Portugal, were estimated to reveal the main inputs and outputs, the seasonal patterns, and how they may influence the ecological functioning of the system. The effects of extreme weather events such as long-lasting strong winds causing upwelling and strong rainfall were assessed. External nutrient inputs were quantified; ocean exchange was assessed in 24-h sampling campaigns, and final calculations were made using a hydrodynamic model of the lagoon. Rain and stream inputs were the main freshwater sources to the lagoon. However, wastewater treatment plant and groundwater discharges dominated nutrient input, together accounting for 98, 96, and 88 % of total C, N, and P input, respectively. Organic matter and nutrients were continuously exported to the ocean. This pattern was reversed following extreme events, such as strong winds in early summer that caused upwelling and after a period of heavy rainfall in late autumn. A principal component analysis (PCA) revealed that ammonium and organic N and C exchange were positively associated with temperature as opposed to pH and nitrate. These variables reflected mostly the benthic lagoon metabolism, whereas particulate P exchange was correlated to Chl a, indicating that this was more related to phytoplankton dynamics. The increase of stochastic events, as expected in climate change scenarios, may have strong effects on the ecological functioning of coastal lagoons, altering the C and nutrient budgets.
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spelling Effects of external nutrient sources and extreme weather events on the nutrient budget of a Southern European coastal lagoonSubmarine Groundwater DischargeNorthern Adriatic SeaRia-FormosaSeagrass MeadowsOrganic-MatterNitrogenWaterEcosystemPortugalEstuaryThe seasonal and annual nitrogen (N), phosphorus (P), and carbon (C) budgets of the mesotidal Ria Formosa lagoon, southern Portugal, were estimated to reveal the main inputs and outputs, the seasonal patterns, and how they may influence the ecological functioning of the system. The effects of extreme weather events such as long-lasting strong winds causing upwelling and strong rainfall were assessed. External nutrient inputs were quantified; ocean exchange was assessed in 24-h sampling campaigns, and final calculations were made using a hydrodynamic model of the lagoon. Rain and stream inputs were the main freshwater sources to the lagoon. However, wastewater treatment plant and groundwater discharges dominated nutrient input, together accounting for 98, 96, and 88 % of total C, N, and P input, respectively. Organic matter and nutrients were continuously exported to the ocean. This pattern was reversed following extreme events, such as strong winds in early summer that caused upwelling and after a period of heavy rainfall in late autumn. A principal component analysis (PCA) revealed that ammonium and organic N and C exchange were positively associated with temperature as opposed to pH and nitrate. These variables reflected mostly the benthic lagoon metabolism, whereas particulate P exchange was correlated to Chl a, indicating that this was more related to phytoplankton dynamics. The increase of stochastic events, as expected in climate change scenarios, may have strong effects on the ecological functioning of coastal lagoons, altering the C and nutrient budgets.Portuguese Science and Technology Foundation (FCT) [POCI/MAR/58427/2004, PPCDT/MAR/58427/2004]; Portuguese Science and Technology Foundation (FCT)SpringerSapientiaMalta, Erik-janStigter, Tibor Y.Pacheco, AndréCarvalho Dill, AméliaTavares, DiogoSantos, Rui2018-12-07T14:53:39Z2017-032017-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/11620eng1559-272310.1007/s12237-016-0150-9info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:23:27Zoai:sapientia.ualg.pt:10400.1/11620Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:03:06.234811Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Effects of external nutrient sources and extreme weather events on the nutrient budget of a Southern European coastal lagoon
title Effects of external nutrient sources and extreme weather events on the nutrient budget of a Southern European coastal lagoon
spellingShingle Effects of external nutrient sources and extreme weather events on the nutrient budget of a Southern European coastal lagoon
Malta, Erik-jan
Submarine Groundwater Discharge
Northern Adriatic Sea
Ria-Formosa
Seagrass Meadows
Organic-Matter
Nitrogen
Water
Ecosystem
Portugal
Estuary
title_short Effects of external nutrient sources and extreme weather events on the nutrient budget of a Southern European coastal lagoon
title_full Effects of external nutrient sources and extreme weather events on the nutrient budget of a Southern European coastal lagoon
title_fullStr Effects of external nutrient sources and extreme weather events on the nutrient budget of a Southern European coastal lagoon
title_full_unstemmed Effects of external nutrient sources and extreme weather events on the nutrient budget of a Southern European coastal lagoon
title_sort Effects of external nutrient sources and extreme weather events on the nutrient budget of a Southern European coastal lagoon
author Malta, Erik-jan
author_facet Malta, Erik-jan
Stigter, Tibor Y.
Pacheco, André
Carvalho Dill, Amélia
Tavares, Diogo
Santos, Rui
author_role author
author2 Stigter, Tibor Y.
Pacheco, André
Carvalho Dill, Amélia
Tavares, Diogo
Santos, Rui
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Sapientia
dc.contributor.author.fl_str_mv Malta, Erik-jan
Stigter, Tibor Y.
Pacheco, André
Carvalho Dill, Amélia
Tavares, Diogo
Santos, Rui
dc.subject.por.fl_str_mv Submarine Groundwater Discharge
Northern Adriatic Sea
Ria-Formosa
Seagrass Meadows
Organic-Matter
Nitrogen
Water
Ecosystem
Portugal
Estuary
topic Submarine Groundwater Discharge
Northern Adriatic Sea
Ria-Formosa
Seagrass Meadows
Organic-Matter
Nitrogen
Water
Ecosystem
Portugal
Estuary
description The seasonal and annual nitrogen (N), phosphorus (P), and carbon (C) budgets of the mesotidal Ria Formosa lagoon, southern Portugal, were estimated to reveal the main inputs and outputs, the seasonal patterns, and how they may influence the ecological functioning of the system. The effects of extreme weather events such as long-lasting strong winds causing upwelling and strong rainfall were assessed. External nutrient inputs were quantified; ocean exchange was assessed in 24-h sampling campaigns, and final calculations were made using a hydrodynamic model of the lagoon. Rain and stream inputs were the main freshwater sources to the lagoon. However, wastewater treatment plant and groundwater discharges dominated nutrient input, together accounting for 98, 96, and 88 % of total C, N, and P input, respectively. Organic matter and nutrients were continuously exported to the ocean. This pattern was reversed following extreme events, such as strong winds in early summer that caused upwelling and after a period of heavy rainfall in late autumn. A principal component analysis (PCA) revealed that ammonium and organic N and C exchange were positively associated with temperature as opposed to pH and nitrate. These variables reflected mostly the benthic lagoon metabolism, whereas particulate P exchange was correlated to Chl a, indicating that this was more related to phytoplankton dynamics. The increase of stochastic events, as expected in climate change scenarios, may have strong effects on the ecological functioning of coastal lagoons, altering the C and nutrient budgets.
publishDate 2017
dc.date.none.fl_str_mv 2017-03
2017-03-01T00:00:00Z
2018-12-07T14:53:39Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.1/11620
url http://hdl.handle.net/10400.1/11620
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1559-2723
10.1007/s12237-016-0150-9
dc.rights.driver.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
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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