Preliminary results for a combined assessment of all seven southern hemisphere humpback whale breeding stocks

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dc.contributor.authorMüller, Andrea
dc.contributor.authorButterworth, Doug S
dc.contributor.authorJohnston, Susan J
dc.date.accessioned2016-03-31T09:52:56Z
dc.date.available2016-03-31T09:52:56Z
dc.date.issued2010
dc.date.updated2016-03-31T09:51:18Z
dc.description.abstractThis paper reports preliminary results from the development of an assessment process that aims to include all seven Southern Hemisphere humpback whale breeding stocks in a single joint assessment, with the purpose of allowing highlatitude historic catches (i.e. catches taken south of 40˚S, where mixing amongst the populations occurs), to be allocated to breeding stocks in proportion to abundance, rather than on set ratios. The approach can be broadened to allow for uncertainties in the placement of the boundaries assumed to link high latitude catches to breeding stocks. Because of the interaction between populations arising from the procedure to allocate high latitude catches amongst breeding stocks, the conventional SIR-based Bayesian approach proved impractical to expand. Instead uniform priors on the various preexploitation level (K) parameters were assumed with the intent to later iteratively adjust these to account for their being informative about the values of the intrinsic growth rate (r) parameters. Initial results (which will need later refinement) are presented purely for the purposes of illustrating the application of the approach.en_ZA
dc.identifier.apacitationMüller, A., Butterworth, D. S., & Johnston, S. J. (2010). <i>Preliminary results for a combined assessment of all seven southern hemisphere humpback whale breeding stocks</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group. Retrieved from http://hdl.handle.net/11427/18445en_ZA
dc.identifier.chicagocitationMüller, Andrea, Doug S Butterworth, and Susan J Johnston <i>Preliminary results for a combined assessment of all seven southern hemisphere humpback whale breeding stocks.</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group, 2010. http://hdl.handle.net/11427/18445en_ZA
dc.identifier.citationMüller, A., Butterworth, D. S., & Johnston, S. J. (2010) Preliminary results for a combined assessment of all seven southern hemisphere humpback whale breeding stocks.en_ZA
dc.identifier.ris TY - Working Paper AU - Müller, Andrea AU - Butterworth, Doug S AU - Johnston, Susan J AB - This paper reports preliminary results from the development of an assessment process that aims to include all seven Southern Hemisphere humpback whale breeding stocks in a single joint assessment, with the purpose of allowing highlatitude historic catches (i.e. catches taken south of 40˚S, where mixing amongst the populations occurs), to be allocated to breeding stocks in proportion to abundance, rather than on set ratios. The approach can be broadened to allow for uncertainties in the placement of the boundaries assumed to link high latitude catches to breeding stocks. Because of the interaction between populations arising from the procedure to allocate high latitude catches amongst breeding stocks, the conventional SIR-based Bayesian approach proved impractical to expand. Instead uniform priors on the various preexploitation level (K) parameters were assumed with the intent to later iteratively adjust these to account for their being informative about the values of the intrinsic growth rate (r) parameters. Initial results (which will need later refinement) are presented purely for the purposes of illustrating the application of the approach. DA - 2010 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2010 T1 - Preliminary results for a combined assessment of all seven southern hemisphere humpback whale breeding stocks TI - Preliminary results for a combined assessment of all seven southern hemisphere humpback whale breeding stocks UR - http://hdl.handle.net/11427/18445 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/18445
dc.identifier.vancouvercitationMüller A, Butterworth DS, Johnston SJ. Preliminary results for a combined assessment of all seven southern hemisphere humpback whale breeding stocks. 2010 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18445en_ZA
dc.languageengen_ZA
dc.publisher.departmentMarine Resource Assessment and Management Groupen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherSouthern hemisphere
dc.subject.otherhumpback whale
dc.subject.otherbreeding stocks
dc.titlePreliminary results for a combined assessment of all seven southern hemisphere humpback whale breeding stocksen_ZA
dc.typeWorking Paperen_ZA
uct.type.filetypeText
uct.type.publicationResearchen_ZA
uct.type.resourceResearch paperen_ZA
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