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Spatial distribution, spawning stock biomass and the development of spatial reference points

dc.contributor.authorReuchlin-Hugenholtz, Emilie
dc.contributor.copyright-releaseNot Applicableen_US
dc.contributor.degreeMaster of Scienceen_US
dc.contributor.departmentDepartment of Biologyen_US
dc.contributor.ethics-approvalNot Applicableen_US
dc.contributor.external-examinerDr. Lorenzo Cianellien_US
dc.contributor.graduate-coordinatorDr. Hal Whiteheaden_US
dc.contributor.manuscriptsNot Applicableen_US
dc.contributor.thesis-readerDr. Sandra Waldeen_US
dc.contributor.thesis-readerDr. Nancy Shackellen_US
dc.contributor.thesis-supervisorDr. Jeffrey Hutchingsen_US
dc.date.accessioned2013-11-12T13:53:07Z
dc.date.available2013-11-12T13:53:07Z
dc.date.defence2013-10-30
dc.date.issued2013-11-12
dc.description.abstractThe relationship between spawning stock biomass (SSB) and 3 spatial distribution metrics (SDMs), measuring range, concentration, and density, using fisheries independent survey data for 10 demersal Northwest Atlantic fish populations (9 species), show metrics of density offer the best correlate of SSB. The concave, positive relationship between high density area (HDA) and SSB indicates that a decline in HDAs beyond a spatial threshold is associated with disproportionately large SSB declines in 6 populations. HDAs might indicate highly productive areas and/or positive fitness consequences, enhancing the ability of individuals to successfully spawn, locate prey, and evade predators. HDAs can help to assess the status of a population’s spatial structure and serve as a spatial reference point. By comparing spatial reference point locations relative to existing biomass reference points (based on MSY), scenarios are described wherein spatial reference points contribute to biomass reference points and to a precautionary approach to fisheries management.en_US
dc.identifier.urihttp://hdl.handle.net/10222/38576
dc.language.isoenen_US
dc.subjectspawning stock biomassen_US
dc.subjectfisheriesen_US
dc.subjectreference pointen_US
dc.subjectspatial distributionen_US
dc.subjectdensity-dependent habitat selectionen_US
dc.subjectmaximum sustainable yielden_US
dc.subjectScotian Shelfen_US
dc.subjectSpatial indicatoren_US
dc.subjecthigh density areasen_US
dc.subjectfishen_US
dc.titleSpatial distribution, spawning stock biomass and the development of spatial reference pointsen_US
dc.typeThesisen_US

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