An updated “Replacement Yield” model fit to catch and survey data for the South coast and for the West coast Kingklip resource of South Africa

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dc.contributor.authorBrandão, Anabela
dc.contributor.authorButterworth, Doug S
dc.date.accessioned2020-01-20T06:58:14Z
dc.date.available2020-01-20T06:58:14Z
dc.date.issued2019
dc.description.abstractA Bayesian “Replacement Yield” model is applied to the total annual catches and the survey abundance estimates for the South African kingklip resource off the South coast and that off the West coast over the 1986 to 2019 period. A posterior median replacement yield (RY) of 1 152 tonnes is estimated for the South coast and of 3 218 tonnes for the West coast; these values are suggested as upper bounds for the catch limit recommendations. Setting the catch limit at the 25th percentile of the posterior distribution results in values of 919 t and 2 986 t for the South and West coasts respectively. The corresponding posterior median rates of increase over the last five years are estimated at about -0.7% and 2% for the South and West coasts respectively.en_US
dc.identifier.apacitationBrandão, A., & Butterworth, D. (2019). <i>An updated “Replacement Yield” model fit to catch and survey data for the South coast and for the West coast Kingklip resource of South Africa</i> ,Faculty of Science ,Department of Mathematics and Applied Mathematics. Retrieved from http://hdl.handle.net/11427/30765en_ZA
dc.identifier.chicagocitationBrandão, Anabela, and Doug Butterworth <i>An updated “Replacement Yield” model fit to catch and survey data for the South coast and for the West coast Kingklip resource of South Africa.</i> ,Faculty of Science ,Department of Mathematics and Applied Mathematics, 2019. http://hdl.handle.net/11427/30765en_ZA
dc.identifier.citationBrandão, A., Butterworth, D. 2019. An updated “Replacement Yield” model fit to catch and survey data for the South coast and for the West coast Kingklip resource of South Africa.en_ZA
dc.identifier.ris TY - Report AU - Brandão, Anabela AU - Butterworth, Doug AB - A Bayesian “Replacement Yield” model is applied to the total annual catches and the survey abundance estimates for the South African kingklip resource off the South coast and that off the West coast over the 1986 to 2019 period. A posterior median replacement yield (RY) of 1 152 tonnes is estimated for the South coast and of 3 218 tonnes for the West coast; these values are suggested as upper bounds for the catch limit recommendations. Setting the catch limit at the 25th percentile of the posterior distribution results in values of 919 t and 2 986 t for the South and West coasts respectively. The corresponding posterior median rates of increase over the last five years are estimated at about -0.7% and 2% for the South and West coasts respectively. DA - 2019 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PY - 2019 T1 - An updated “Replacement Yield” model fit to catch and survey data for the South coast and for the West coast Kingklip resource of South Africa TI - An updated “Replacement Yield” model fit to catch and survey data for the South coast and for the West coast Kingklip resource of South Africa UR - http://hdl.handle.net/11427/30765 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/30765
dc.identifier.vancouvercitationBrandão A, Butterworth D. An updated “Replacement Yield” model fit to catch and survey data for the South coast and for the West coast Kingklip resource of South Africa. 2019 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/30765en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Mathematics and Applied Mathematicsen_US
dc.publisher.facultyFaculty of Scienceen_US
dc.titleAn updated “Replacement Yield” model fit to catch and survey data for the South coast and for the West coast Kingklip resource of South Africaen_US
dc.typeReporten_US
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