Environmental control of Northeast Atlantic mackerel (Scomber scombrus) recruitment in the Southern Bay of Biscay: Case study of the failure in the year 2000

We investigate the effect of strong meteorological perturbations in early spring on the success of mackerel (Scomber scombrus) recruitment in the N⁄NW Iberian area (southern Bay of Biscay) for the period 1999–2008. In 2000, the year of the most pronounced recruitment failure on record, two consecuti...

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Autores: Villamor, Begoña, González-Pola, César, Lavín, Alicia, Valdés-Santurio, Luis, Lago-de-Lanzós-y-Tomás, Ana, Franco-Fernández, Concha, Cabanas-López, José Manuel, Hernández, Carmen, Iglesias, Magdalena, Carrera, Pablo, Porteiro-Lago, Carmen
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2011
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/326773
Acceso en línea:http://hdl.handle.net/10261/326773
Access Level:acceso abierto
Palabra clave:Pesquerías
Centro Oceanográfico de Santander
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spelling Environmental control of Northeast Atlantic mackerel (Scomber scombrus) recruitment in the Southern Bay of Biscay: Case study of the failure in the year 2000Villamor, BegoñaGonzález-Pola, CésarLavín, AliciaValdés-Santurio, LuisLago-de-Lanzós-y-Tomás, AnaFranco-Fernández, ConchaCabanas-López, José ManuelHernández, CarmenIglesias, MagdalenaCarrera, PabloPorteiro-Lago, CarmenPesqueríasCentro Oceanográfico de SantanderWe investigate the effect of strong meteorological perturbations in early spring on the success of mackerel (Scomber scombrus) recruitment in the N⁄NW Iberian area (southern Bay of Biscay) for the period 1999–2008. In 2000, the year of the most pronounced recruitment failure on record, two consecutive multidisciplinary surveys sampled hydrographic conditions and mackerel eggs, larvae and post-larvae over the main mackerel spawning grounds of the north and northwest coast of the Iberian Peninsula. Analysis of egg and larval abundance and birthdates based on the otoliths of mackerel juveniles caught between July and October 2000 showed that there were no survivors from the early spring spawns, indicating a massive loss of early spawning effort. Moreover, the abundance of 1-year-old mackerel estimated from an acoustic survey carried out in 2001 was the lowest observed within the 1999–2008 time series. This low or null survival from the early spawns in 2000 could be due to the meteorological and oceanographic conditions of that spring, in particular two storm events in April after a relatively calm March. The first storm event from the north caused strong local wind in the southern Bay of Biscay but a weak oceanographic response. The second storm event from the southwest was mainly felt west of Galicia and caused a notable increase in shelf currents and a shift of the hydrographical structure along the shelf. Detailed analysis of strong wind pulses in early spring within the historical recruitment record suggests that strong local turbulence generated by high wind speeds and advection of larvae caused by the enhancement of shelf currents can contribute to reduced recruitment. Our observations indicate that, in 2000, both mechanisms were presentSí202320232011info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Preprintinfo:eu-repo/semantics/submittedVersionhttp://hdl.handle.net/10261/326773reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Santanderinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3267732026-05-22T06:33:51Z
dc.title.none.fl_str_mv Environmental control of Northeast Atlantic mackerel (Scomber scombrus) recruitment in the Southern Bay of Biscay: Case study of the failure in the year 2000
title Environmental control of Northeast Atlantic mackerel (Scomber scombrus) recruitment in the Southern Bay of Biscay: Case study of the failure in the year 2000
spellingShingle Environmental control of Northeast Atlantic mackerel (Scomber scombrus) recruitment in the Southern Bay of Biscay: Case study of the failure in the year 2000
Villamor, Begoña
Pesquerías
Centro Oceanográfico de Santander
title_short Environmental control of Northeast Atlantic mackerel (Scomber scombrus) recruitment in the Southern Bay of Biscay: Case study of the failure in the year 2000
title_full Environmental control of Northeast Atlantic mackerel (Scomber scombrus) recruitment in the Southern Bay of Biscay: Case study of the failure in the year 2000
title_fullStr Environmental control of Northeast Atlantic mackerel (Scomber scombrus) recruitment in the Southern Bay of Biscay: Case study of the failure in the year 2000
title_full_unstemmed Environmental control of Northeast Atlantic mackerel (Scomber scombrus) recruitment in the Southern Bay of Biscay: Case study of the failure in the year 2000
title_sort Environmental control of Northeast Atlantic mackerel (Scomber scombrus) recruitment in the Southern Bay of Biscay: Case study of the failure in the year 2000
dc.creator.none.fl_str_mv Villamor, Begoña
González-Pola, César
Lavín, Alicia
Valdés-Santurio, Luis
Lago-de-Lanzós-y-Tomás, Ana
Franco-Fernández, Concha
Cabanas-López, José Manuel
Hernández, Carmen
Iglesias, Magdalena
Carrera, Pablo
Porteiro-Lago, Carmen
author Villamor, Begoña
author_facet Villamor, Begoña
González-Pola, César
Lavín, Alicia
Valdés-Santurio, Luis
Lago-de-Lanzós-y-Tomás, Ana
Franco-Fernández, Concha
Cabanas-López, José Manuel
Hernández, Carmen
Iglesias, Magdalena
Carrera, Pablo
Porteiro-Lago, Carmen
author_role author
author2 González-Pola, César
Lavín, Alicia
Valdés-Santurio, Luis
Lago-de-Lanzós-y-Tomás, Ana
Franco-Fernández, Concha
Cabanas-López, José Manuel
Hernández, Carmen
Iglesias, Magdalena
Carrera, Pablo
Porteiro-Lago, Carmen
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Pesquerías
Centro Oceanográfico de Santander
topic Pesquerías
Centro Oceanográfico de Santander
description We investigate the effect of strong meteorological perturbations in early spring on the success of mackerel (Scomber scombrus) recruitment in the N⁄NW Iberian area (southern Bay of Biscay) for the period 1999–2008. In 2000, the year of the most pronounced recruitment failure on record, two consecutive multidisciplinary surveys sampled hydrographic conditions and mackerel eggs, larvae and post-larvae over the main mackerel spawning grounds of the north and northwest coast of the Iberian Peninsula. Analysis of egg and larval abundance and birthdates based on the otoliths of mackerel juveniles caught between July and October 2000 showed that there were no survivors from the early spring spawns, indicating a massive loss of early spawning effort. Moreover, the abundance of 1-year-old mackerel estimated from an acoustic survey carried out in 2001 was the lowest observed within the 1999–2008 time series. This low or null survival from the early spawns in 2000 could be due to the meteorological and oceanographic conditions of that spring, in particular two storm events in April after a relatively calm March. The first storm event from the north caused strong local wind in the southern Bay of Biscay but a weak oceanographic response. The second storm event from the southwest was mainly felt west of Galicia and caused a notable increase in shelf currents and a shift of the hydrographical structure along the shelf. Detailed analysis of strong wind pulses in early spring within the historical recruitment record suggests that strong local turbulence generated by high wind speeds and advection of larvae caused by the enhancement of shelf currents can contribute to reduced recruitment. Our observations indicate that, in 2000, both mechanisms were present
publishDate 2011
dc.date.none.fl_str_mv 2011
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Preprint
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/326773
url http://hdl.handle.net/10261/326773
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Santander
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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 15,81155

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