Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/743
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dc.contributor.authorMartín-González, J.M.en_US
dc.contributor.authorSolari, Aldo Pieren_US
dc.contributor.authorBas Peired,Carlosen_US
dc.contributor.otherFacultad de Ciencias del Mar-
dc.contributor.otherDepartamento de Física-
dc.date.accessioned2009-10-08T02:31:00Z-
dc.date.accessioned2018-03-01T13:39:37Z-
dc.date.available2018-03-01T13:39:37Z-
dc.date.issued1997en_US
dc.identifier.issn1054-3139en_US
dc.identifier.other1787-
dc.identifier.urihttp://hdl.handle.net/10553/743-
dc.description.abstractThe stock and recruitment (SR) relationship in Baltic cod is studied. In light of the field data, the authors suggest that the SR relationship oscillates at two levels of stability (cycles) due to the interaction between density-dependent compensation and depensation. Furthermore, density-independent transitions between equilibrium states are assumed due to fishing mortality and medium and long-term periodicities in the abiotic environment which may induce compensatory and depensatory effects upon stock and recruitment. These mechanics are related to concepts such as variable carrying capacity, multiple equilibria, minimum viable population and inverse density dependence. Carrying capacity is regarded as a critical threshold between different equilibrium states and the minimum viable population as an unstable equilibrium below which the SR relationship may not rehabilitate. A modelling approach is put forward where the SR-relationship is regarded as a system or summation of non-linear functions with dynamic features ranging from chaos (the ceiling, when external conditions are extremely benign), going through a range of relatively stable, converging cycles (as external stress increases), to a quasi-standstill state with no clear oscillations (when the minimum viable population is being approached) which may lead to inverse density-dependence (depensatory dynamics). This SR-system is considered as highly flexible as it has the capacity to, persistently, evolve and return within a range of equilibrium states. Also, it is proposed that the SR relationship is, al the present time, nearby the minimum Viable population due to the combined effects from high fishing mortality and negative effects from external perturbations. However, a SR rehabilitation towards a low equilibrium state is expected, during the coming years likely due to positive trends in external perturbations. A simple numerical simulation is put forward where the SR system is perturbed by a sinusoidal external variable at three constant levels of mortality. (C) 1997 International Council for the Exploration of the Sea.
dc.languageengen_US
dc.publisher1054-3139-
dc.relation.ispartofICES Journal of Marine Scienceen_US
dc.sourceICES Journal of Marine Science [ISSN 1054-3139], v. 54, p. 427-443en_US
dc.subject240210 Biología de poblacionesen_US
dc.subject510208 Pescaen_US
dc.subject.otherPecesen_US
dc.subject.otherPoblacionesen_US
dc.subject.otherModelos matemáticosen_US
dc.titleStock and recruitment in Baltic cod Gadus morhua : a new, non-linear approachen_US
dc.typeinfo:eu-repo/semantics/conferenceObjecten_US
dc.typeConference_Paperen_US
dc.relation.conferenceMini-Symposium on Arctic Oceanographic Processes - 1995, at the 1995 ICES Annual Science Conference
dc.identifier.doi10.1006/jmsc.1996.0193
dc.identifier.scopus0031153916-
dc.identifier.isiA1997XG98100013-
dcterms.isPartOfIces Journal Of Marine Science-
dcterms.sourceIces Journal Of Marine Science[ISSN 1054-3139],v. 54 (3), p. 427-443-
dc.contributor.authorscopusid7102513712-
dc.contributor.authorscopusid6603384846-
dc.contributor.authorscopusid7004922304-
dc.contributor.authorscopusidFísica-
dc.contributor.authorscopusidFísica de la atmósfera y contaminación medioambiental-
dc.contributor.authorscopusidFacultad de Ciencias del Mar-
dc.contributor.contentdmFísica-
dc.contributor.contentdmFísica de la atmósfera y contaminación medioambiental-
dc.contributor.contentdmFacultad de Ciencias del Mar-
dc.identifier.absysnet241771-
dc.identifier.crisid--
dc.description.lastpage443-
dc.description.firstpage427-
dc.relation.volume54-
dc.investigacionCienciasen_US
dc.rights.accessrightsinfo:eu-repo/semantics/openAccess-
dc.type2Actas de congresosen_US
dc.contributor.daisngid3739897-
dc.contributor.daisngid1769703-
dc.contributor.daisngid1227821-
dc.contributor.daisngid1175241
dc.identifier.investigatorRIDH-6127-2015-
dc.identifier.external--
dc.utils.revisionen_US
dc.contributor.wosstandardWOS:Solari, AP
dc.contributor.wosstandardWOS:MartinGonzalez, JM
dc.contributor.wosstandardWOS:Bas, C
dc.date.coverdateEnero 1997
item.grantfulltextopen-
item.fulltextCon texto completo-
crisitem.author.deptDepartamento de Física-
crisitem.author.deptFísica marina y teledetección aplicada-
crisitem.author.deptIU de Estudios Ambientales y Recursos Naturales-
crisitem.author.deptDepartamento de Física-
crisitem.author.deptFísica marina y teledetección aplicada-
crisitem.author.deptIU de Estudios Ambientales y Recursos Naturales-
crisitem.author.orcid0000-0003-0096-7142-
crisitem.author.orcid0000-0003-0096-7142-
crisitem.author.parentorgIU de Estudios Ambientales y Recursos Naturales-
crisitem.author.parentorgIU de Estudios Ambientales y Recursos Naturales-
crisitem.author.fullNameMartín González, Juan Manuel-
crisitem.author.fullNameMartín González, Juan Manuel-
crisitem.author.fullNameBas Peired,Carlos-
crisitem.author.departamentoFísica-
crisitem.author.departamentoFísica-
Appears in Collections:Actas de congresos
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