The 2007 Age-Structured Production Model assessments and projections for the South Coast rock lobster resource-routine update using model fitting to catch-at-age data

 

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dc.contributor.author Johnston, Susan J
dc.contributor.author Butterworth, Doug S
dc.date.accessioned 2016-03-17T09:41:02Z
dc.date.available 2016-03-17T09:41:02Z
dc.date.issued 2007
dc.identifier.citation Jonhston, S.J. and Butterworth, D.S. (2007).The 2007 Age-Structured Production Model assessments and projections for the South Coast rock lobster resource-routine update using model fitting to catch-at-age data en_ZA
dc.identifier.uri http://hdl.handle.net/11427/17926
dc.description.abstract The assessment conducted in 2006 (WG/06/06/WCRL3) has been routinely extended, taking account of a further year’s catch, CPUE and catch-at-age data. The observed CPUE shows a slight decrease for 2005 (2005/06 season). The sustainable yield estimates are generally very similar to those for the 2006 assessment, although estimates of current biomass levels relative to K increase. The Reference Case (RC) scenario suggests that a TAC of about 330 MT or less would be appropriate to prevent biomass decline in the future. The other two scenarios reported suggest higher values than this. If the catch-at-age data are down-weighted, then this 360 MT level for the TAC is increased to 390 MT. en_ZA
dc.language eng en_ZA
dc.subject.other Age-Structured Production Model
dc.subject.other South coast rock lobster
dc.title The 2007 Age-Structured Production Model assessments and projections for the South Coast rock lobster resource-routine update using model fitting to catch-at-age data en_ZA
dc.type Working Paper en_ZA
dc.date.updated 2016-03-17T09:33:37Z
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


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