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

 

Show simple item record

dc.contributor.author Müller, Andrea
dc.contributor.author Butterworth, Doug S
dc.contributor.author Johnston, Susan J
dc.date.accessioned 2016-03-31T09:52:56Z
dc.date.available 2016-03-31T09:52:56Z
dc.date.issued 2010
dc.identifier.citation Müller, 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.uri http://hdl.handle.net/11427/18445
dc.description.abstract 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. en_ZA
dc.language eng en_ZA
dc.subject.other Southern hemisphere
dc.subject.other humpback whale
dc.subject.other breeding stocks
dc.title Preliminary results for a combined assessment of all seven southern hemisphere humpback whale breeding stocks en_ZA
dc.type Working Paper en_ZA
dc.date.updated 2016-03-31T09:51:18Z
uct.type.publication Research en_ZA
uct.type.resource Research paper en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Marine Resource Assessment and Management Group en_ZA
uct.type.filetype Text


Files in this item

This item appears in the following Collection(s)

Show simple item record