Long-Term Dynamic in Nutrients, Chlorophyll a, and Water Quality Parameters in a Coastal Lagoon During a Process of Eutrophication for Decades, a Sudden Break and a Relatively Rapid Recovery

Coastal lagoons are considered among the marine habitats with the highest biological productivity, and support a great variety of human activities and pressures that make them especially vulnerable to trophic imbalances. While dystrophic crises are common in many lagoons, others like the Mar Menor s...

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Autores: Pérez-Ruzafa, Ángel, Campillo, Sara, Fernández-Palacios, José María, García-Lacunza, Antonio, García-Oliva, Miriam, Ibañez, Helena, Navarro-Martínez, Pedro C., Pérez-Marcos, María, Pérez-Ruzafa, Isabel María, Quispe-Becerra, Jhoni Ismael, Sala-Mirete, Antonio, Sánchez, Olga, Marcos, Concepción
Formato: artículo
Fecha de publicación:2019
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/13530
Acesso em linha:https://hdl.handle.net/20.500.14352/13530
Access Level:acceso abierto
Palavra-chave:574
Coastal lagoons
transitional ecosystems
Mar Menor
eutrophication
resistance
resilience
recovery
oligotrophication
Ecología (Biología)
2401.06 Ecología animal
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oai_identifier_str oai:docta.ucm.es:20.500.14352/13530
network_acronym_str ES
network_name_str España
repository_id_str
spelling Long-Term Dynamic in Nutrients, Chlorophyll a, and Water Quality Parameters in a Coastal Lagoon During a Process of Eutrophication for Decades, a Sudden Break and a Relatively Rapid RecoveryPérez-Ruzafa, ÁngelCampillo, SaraFernández-Palacios, José MaríaGarcía-Lacunza, AntonioGarcía-Oliva, MiriamIbañez, HelenaNavarro-Martínez, Pedro C.Pérez-Marcos, MaríaPérez-Ruzafa, Isabel MaríaQuispe-Becerra, Jhoni IsmaelSala-Mirete, AntonioSánchez, OlgaMarcos, Concepción574Coastal lagoonstransitional ecosystemsMar MenoreutrophicationresistanceresiliencerecoveryoligotrophicationEcología (Biología)2401.06 Ecología animalCoastal lagoons are considered among the marine habitats with the highest biological productivity, and support a great variety of human activities and pressures that make them especially vulnerable to trophic imbalances. While dystrophic crises are common in many lagoons, others like the Mar Menor show homeostatic mechanisms, high resilience, and clear waters. This paper analyses the water column descriptors dynamic during the last 22 years in this coastal lagoon, in the context of a eutrophication process produced by an increase in nutrient inputs, mainly derived from agriculture. Despite water column nitrate concentration increased by one order of magnitude, the lagoon maintained homeostatic regulation for two decades, keeping the water transparency and relatively low levels of nutrients and chlorophyll a (Prebreak phase), followed by a sudden change of state in 2016 with an abrupt increase in average nutrients and chlorophyll a concentration and loss of water transparency (Break phase), and a relatively rapid recovery after the reduction of nutrient discharges (Recovery phase). The activation of the regulation mechanisms seems to manifest through an ammonium production in the water column, as a consequence of the activity in the trophic web. The low correlation between chlorophyll a and nutrients concentration, mainly at small spatio-temporal scales, is in disagreement with eutrophication traditional models, and suggests a rapid response of primary producers to nutrient inputs and a zooplankton control in the short-term, which in turn is controlled by the rest of the trophic web components. Homeostatic properties that in the Mar Menor lagoon have provided resistance to eutrophication are based on several mechanisms: channeling its production toward the benthic system (maintaining high biomasses of primary producers, filter feeders, and detritivores), a top-down control of the pelagic trophic web exerted by ichthyoplankton and jellyfish, and exporting surplus production outside the system. Resilience of the system would be based on the high turnover in the species composition related to the restricted connectivity to the sea, the spatio-temporal variability of the environmental conditions, and the multiplicity of spatial–temporal scales involved in lagoon processes. TRIX index was sensitive to the trophic and water quality changes. However, in our study, its current score does not allow to anticipate or alert the eutrophication risk and the trophic breakpoint of the system.Frontiers MediaUniversidad Complutense de Madrid20192019-02-1120192019-02-11journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/13530reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/135302026-06-02T12:44:21Z
dc.title.none.fl_str_mv Long-Term Dynamic in Nutrients, Chlorophyll a, and Water Quality Parameters in a Coastal Lagoon During a Process of Eutrophication for Decades, a Sudden Break and a Relatively Rapid Recovery
title Long-Term Dynamic in Nutrients, Chlorophyll a, and Water Quality Parameters in a Coastal Lagoon During a Process of Eutrophication for Decades, a Sudden Break and a Relatively Rapid Recovery
spellingShingle Long-Term Dynamic in Nutrients, Chlorophyll a, and Water Quality Parameters in a Coastal Lagoon During a Process of Eutrophication for Decades, a Sudden Break and a Relatively Rapid Recovery
Pérez-Ruzafa, Ángel
574
Coastal lagoons
transitional ecosystems
Mar Menor
eutrophication
resistance
resilience
recovery
oligotrophication
Ecología (Biología)
2401.06 Ecología animal
title_short Long-Term Dynamic in Nutrients, Chlorophyll a, and Water Quality Parameters in a Coastal Lagoon During a Process of Eutrophication for Decades, a Sudden Break and a Relatively Rapid Recovery
title_full Long-Term Dynamic in Nutrients, Chlorophyll a, and Water Quality Parameters in a Coastal Lagoon During a Process of Eutrophication for Decades, a Sudden Break and a Relatively Rapid Recovery
title_fullStr Long-Term Dynamic in Nutrients, Chlorophyll a, and Water Quality Parameters in a Coastal Lagoon During a Process of Eutrophication for Decades, a Sudden Break and a Relatively Rapid Recovery
title_full_unstemmed Long-Term Dynamic in Nutrients, Chlorophyll a, and Water Quality Parameters in a Coastal Lagoon During a Process of Eutrophication for Decades, a Sudden Break and a Relatively Rapid Recovery
title_sort Long-Term Dynamic in Nutrients, Chlorophyll a, and Water Quality Parameters in a Coastal Lagoon During a Process of Eutrophication for Decades, a Sudden Break and a Relatively Rapid Recovery
dc.creator.none.fl_str_mv Pérez-Ruzafa, Ángel
Campillo, Sara
Fernández-Palacios, José María
García-Lacunza, Antonio
García-Oliva, Miriam
Ibañez, Helena
Navarro-Martínez, Pedro C.
Pérez-Marcos, María
Pérez-Ruzafa, Isabel María
Quispe-Becerra, Jhoni Ismael
Sala-Mirete, Antonio
Sánchez, Olga
Marcos, Concepción
author Pérez-Ruzafa, Ángel
author_facet Pérez-Ruzafa, Ángel
Campillo, Sara
Fernández-Palacios, José María
García-Lacunza, Antonio
García-Oliva, Miriam
Ibañez, Helena
Navarro-Martínez, Pedro C.
Pérez-Marcos, María
Pérez-Ruzafa, Isabel María
Quispe-Becerra, Jhoni Ismael
Sala-Mirete, Antonio
Sánchez, Olga
Marcos, Concepción
author_role author
author2 Campillo, Sara
Fernández-Palacios, José María
García-Lacunza, Antonio
García-Oliva, Miriam
Ibañez, Helena
Navarro-Martínez, Pedro C.
Pérez-Marcos, María
Pérez-Ruzafa, Isabel María
Quispe-Becerra, Jhoni Ismael
Sala-Mirete, Antonio
Sánchez, Olga
Marcos, Concepción
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 574
Coastal lagoons
transitional ecosystems
Mar Menor
eutrophication
resistance
resilience
recovery
oligotrophication
Ecología (Biología)
2401.06 Ecología animal
topic 574
Coastal lagoons
transitional ecosystems
Mar Menor
eutrophication
resistance
resilience
recovery
oligotrophication
Ecología (Biología)
2401.06 Ecología animal
description Coastal lagoons are considered among the marine habitats with the highest biological productivity, and support a great variety of human activities and pressures that make them especially vulnerable to trophic imbalances. While dystrophic crises are common in many lagoons, others like the Mar Menor show homeostatic mechanisms, high resilience, and clear waters. This paper analyses the water column descriptors dynamic during the last 22 years in this coastal lagoon, in the context of a eutrophication process produced by an increase in nutrient inputs, mainly derived from agriculture. Despite water column nitrate concentration increased by one order of magnitude, the lagoon maintained homeostatic regulation for two decades, keeping the water transparency and relatively low levels of nutrients and chlorophyll a (Prebreak phase), followed by a sudden change of state in 2016 with an abrupt increase in average nutrients and chlorophyll a concentration and loss of water transparency (Break phase), and a relatively rapid recovery after the reduction of nutrient discharges (Recovery phase). The activation of the regulation mechanisms seems to manifest through an ammonium production in the water column, as a consequence of the activity in the trophic web. The low correlation between chlorophyll a and nutrients concentration, mainly at small spatio-temporal scales, is in disagreement with eutrophication traditional models, and suggests a rapid response of primary producers to nutrient inputs and a zooplankton control in the short-term, which in turn is controlled by the rest of the trophic web components. Homeostatic properties that in the Mar Menor lagoon have provided resistance to eutrophication are based on several mechanisms: channeling its production toward the benthic system (maintaining high biomasses of primary producers, filter feeders, and detritivores), a top-down control of the pelagic trophic web exerted by ichthyoplankton and jellyfish, and exporting surplus production outside the system. Resilience of the system would be based on the high turnover in the species composition related to the restricted connectivity to the sea, the spatio-temporal variability of the environmental conditions, and the multiplicity of spatial–temporal scales involved in lagoon processes. TRIX index was sensitive to the trophic and water quality changes. However, in our study, its current score does not allow to anticipate or alert the eutrophication risk and the trophic breakpoint of the system.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-02-11
2019
2019-02-11
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/13530
url https://hdl.handle.net/20.500.14352/13530
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
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
Atribución 3.0 España
https://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 Frontiers Media
publisher.none.fl_str_mv Frontiers Media
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301629

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