Is OMP-18 robust to alternative assumptions about anchovy dynamics?

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dc.contributor.authorde Moor, Carryn
dc.date.accessioned2020-01-28T08:59:45Z
dc.date.available2020-01-28T08:59:45Z
dc.date.issued2019
dc.description.abstractThe anchovy control parameter in OMP-18 is finalised given a revised baseline Operating Model (OM) and robustness to alternative OMs is tested. OMP-18 is robust to many of the alternative OMs tested. However, in five cases the risk to the anchovy resource under OMP-18 is notably higher than that assumed to be acceptable when tuning the Harvest Control Rule. These cases include i) should the stock-recruit relationship be better represented by a Hockey-Stick or ii) Ricker curve, than the Beverton Holt curve assumed when tuning OMP-18, iii) should natural mortality be lower than that assumed for the baseline OM, iv) should commercial selectivity not decrease for larger fish and v) if the egg survey estimates of abundance were over-estimates of spawner biomass instead of the absolute estimate assumed when tuning OMP-18.en_US
dc.identifier.apacitationde Moor, C. (2019). <i>Is OMP-18 robust to alternative assumptions about anchovy dynamics?</i> ,Faculty of Science ,Department of Mathematics and Applied Mathematics. Retrieved from http://hdl.handle.net/11427/30819en_ZA
dc.identifier.chicagocitationde Moor, Carryn <i>Is OMP-18 robust to alternative assumptions about anchovy dynamics?.</i> ,Faculty of Science ,Department of Mathematics and Applied Mathematics, 2019. http://hdl.handle.net/11427/30819en_ZA
dc.identifier.citationde Moor, C. 2019. Is OMP-18 robust to alternative assumptions about anchovy dynamics?.en_ZA
dc.identifier.ris TY - Report AU - de Moor, Carryn AB - The anchovy control parameter in OMP-18 is finalised given a revised baseline Operating Model (OM) and robustness to alternative OMs is tested. OMP-18 is robust to many of the alternative OMs tested. However, in five cases the risk to the anchovy resource under OMP-18 is notably higher than that assumed to be acceptable when tuning the Harvest Control Rule. These cases include i) should the stock-recruit relationship be better represented by a Hockey-Stick or ii) Ricker curve, than the Beverton Holt curve assumed when tuning OMP-18, iii) should natural mortality be lower than that assumed for the baseline OM, iv) should commercial selectivity not decrease for larger fish and v) if the egg survey estimates of abundance were over-estimates of spawner biomass instead of the absolute estimate assumed when tuning OMP-18. DA - 2019 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PY - 2019 T1 - Is OMP-18 robust to alternative assumptions about anchovy dynamics? TI - Is OMP-18 robust to alternative assumptions about anchovy dynamics? UR - http://hdl.handle.net/11427/30819 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/30819
dc.identifier.vancouvercitationde Moor C. Is OMP-18 robust to alternative assumptions about anchovy dynamics?. 2019 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/30819en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Mathematics and Applied Mathematicsen_US
dc.publisher.facultyFaculty of Scienceen_US
dc.titleIs OMP-18 robust to alternative assumptions about anchovy dynamics?en_US
dc.typeReporten_US
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