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dc.contributor.authorGoikoetxea, Nerea
dc.contributor.authorIrigoien, Xabier
dc.date.accessioned2019-05-17T08:47:12Z-
dc.date.available2019-05-17T08:47:12Z-
dc.date.issued2013
dc.identifierISI:000325147300003
dc.identifier.citationFISHERIES OCEANOGRAPHY, 2013, 22, 459-476
dc.identifier.issn1054-6006
dc.identifier.urihttp://dspace.azti.es/handle/24689/508-
dc.description.abstractThe distribution of northern European hake (Merluccius merluccius L.) extends from the Bay of Biscay up to Norwegian waters. However, despite its wide geographical distribution, there have been few studies on fluctuations in the European hake populations. Marine ecosystem shifts have been investigated worldwide and their influence on trophic levels has been studied, from top predator fish populations down to planktonic prey species, but there is little information on the effect of atmosphere-ocean shifts on European hake. This work analyses hake recruitment success (recruits per adult biomass) in relation to environmental changes over the period 1978-2006 in order to determine whether the regime shift identified in several abiotic and biotic variables in the North Sea also affected the Northeast Atlantic shelf oceanography. Hake recruitment success as well as parameters such as the sea surface temperature, wind patterns and copepod abundance changed significantly at the end of the 1980s, demonstrating an ecological regime shift in the Northeast Atlantic. Despite the low reproductive biomass recorded during the last decades, hake recruitment success has been higher since the change in 1989/90. The higher productivity may have sustained the population despite the intense fishing pressure; copepod abundance, warmer water temperatures and moderate eastward transport were found to be beneficial. In conclusion, in 1988/89 the Northeast Atlantic environment shifted to a favourable regime for northern hake production. This study supports the hypothesis that the hydro-climatic regime shift that affected the North Sea in the late 1980s may have influenced a wider region, such as the Northeast Atlantic.
dc.language.isoeng
dc.publisherWILEY-BLACKWELL
dc.subjecthake
dc.subjectMerluccius merluccius
dc.subjectNortheast Atlantic
dc.subjectrecruitment success
dc.subjectregime shift
dc.subjectLONG-TERM CHANGES
dc.subjectCOD GADUS-MORHUA
dc.subjectANCHOVY ENGRAULIS-ENCRASICOLUS
dc.subjectPLANKTON RECORDER SURVEY
dc.subjectSEA-SURFACE TEMPERATURE
dc.subjectHEAT-FLUX ANOMALIES
dc.subjectGULF-STREAM
dc.subjectCLIMATE-CHANGE
dc.subjectFISH RECRUITMENT
dc.subjectSUBPOLAR GYRE
dc.titleLinks between the recruitment success of northern European hake (Merluccius merluccius L.) and a regime shift on the NE Atlantic continental shelf
dc.typeArticle
dc.identifier.journalFISHERIES OCEANOGRAPHY
dc.format.page459-476
dc.format.volume22
dc.contributor.funderFundacion Centros Tecnologicos, Inaki Goenaga
dc.contributor.funderEuropean FP7 Integrated Project MEECE
dc.identifier.e-issn1365-2419
dc.identifier.doi10.1111/fog.12033
Aparece en las tipos de publicación: Artículos científicos



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