Show simple item record

dc.contributor.authorHidalgo, M. (Manuel) es_ES
dc.contributor.authorMassutí, E. (Enric) es_ES
dc.contributor.authorGuijarro, B. (Beatriz) es_ES
dc.contributor.authorMoranta, J. (Joan) es_ES
dc.contributor.authorCiannelli, L. (Lorenzo)es_ES
dc.contributor.authorLloret, J. (Josep)es_ES
dc.contributor.authorOliver, P. (Pere) es_ES
dc.contributor.authorStenseth, N.C. (Nils Christian)es_ES
dc.description.abstractIn 1980 and 1995, the European hake (Merluccius merluccius) population off the Balearic Islands (northwestern Mediterranean) underwent changes at both the individual level and the population level. There was a sharp decrease in abundance that coincided with a change in the seasonal catch-per-unit-effort pattern in 1980. A new population scenario emerged after 1980 characterized by an increase in the intrinsic growth rate and a decrease in carrying capacity; however, catchability remained the same. An age-structure truncation could have caused these changes, making the population more dependent on year-to-year recruitment. A change in size structure also occurred in 1995, which was evidenced by a sudden decrease in the mean length-at-age (L) and abundance of recruits and a change in the density-dependent effect on recruits. As the Mediterranean trawl fishery mainly harvests recruits and juveniles and fishery harvesting induces adaptive changes in life history traits, the sharp decrease in L of recruits could be explained as a growth reduction due to the selective pres- sure to stay under mesh size for longer and thus maximize survival until reproduction. These individual and population transitions explain the changes in the response to the environmental forcing observed in the European hake off the Balearic Islandsen_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Españaes_ES
dc.subjectEuropean hakeen_US
dc.subjectpopulations dynamicsen_US
dc.subjectage truncationen_US
dc.subjectfishing harvestingen_US
dc.subjectBalearic Islandsen_US
dc.titlePopulation effects and changes in life history traits in relation to phase transitions induced by long-term fishery harvesting: European hake (Merluccius merluccius) off the Balearic Islandsen_US
dc.identifier.bibliographicCitationCanadian Journal of Fisheries and Aquatic Sciences, 66. 2009: 1355-1370es_ES
dc.publisher.centreCentro Oceanográfico de Baleareses_ES
dc.coverage.spatialStudyMediterranean Seaen_US
dc.coverage.spatialStudyWestern Mediterranean Seaen_US
dc.coverage.spatialStudyBalearic Seaen_US

Files in this item


There are no files associated with this item.

    Show simple item record

    Atribución-NoComercial-SinDerivadas 3.0 España
    Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España