A history of recent bases for management and the development of a species-combined Operational Management Procedure for the South African hake resource

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dc.contributor.authorRademeyer, Rebecca A
dc.contributor.authorPlagányi, Éva E
dc.contributor.authorButterworth, Doug S
dc.date.accessioned2016-03-11T13:54:53Z
dc.date.available2016-03-11T13:54:53Z
dc.date.issued2010
dc.date.updated2016-03-08T10:15:23Z
dc.description.abstractThe bases for historical catch limits placed on the hake fishery are reviewed in brief for earlier years and then in some depth over the period from 1991 when the Operational Management Procedure (OMP) approach was introduced for this fishery. The new OMP implemented from 2007 was the first to be based on the use of rigorous species-disaggregated assessments of the resource as Operating Models. The paper describes the Reference Set and range of robustness trials, together with the associated Operating Models, which were used for the simulation testing of the new OMP. Performance statistics for a number of candidate OMPs are compared, and the two key trade-off decisions in the selection process discussed (substantial Merluccius paradoxus and catch per unit effort [CPUE] recovery, and total allowable catch [TAC] stability constraints). Details of the OMP adopted and how its formulae depend on recent trends in CPUE and survey estimates of abundance are provided. OMP-2007, which is tuned to a median 20-year recovery target of 20% of pristine spawning biomass for M. paradoxus and a 50% increase in CPUE over the next 10 years, has been adopted for recommending hake TACs over the 2007–2010 period until the next scheduled major review. A set of general guidelines adopted for the process of possible overruling of recommendations from OMPs or bringing forward their reviews within an otherwise intended four-year cycle is detailed.en_ZA
dc.identifierhttp://dx.doi.org/10.2989/AJMS.2008.30.2.8.558
dc.identifier.apacitationRademeyer, R. A., Plagányi, É. E., & Butterworth, D. S. (2010). A history of recent bases for management and the development of a species-combined Operational Management Procedure for the South African hake resource. <i>African Journal of Marine Science</i>, http://hdl.handle.net/11427/17643en_ZA
dc.identifier.chicagocitationRademeyer, Rebecca A, Éva E Plagányi, and Doug S Butterworth "A history of recent bases for management and the development of a species-combined Operational Management Procedure for the South African hake resource." <i>African Journal of Marine Science</i> (2010) http://hdl.handle.net/11427/17643en_ZA
dc.identifier.citationRademeyer, R. A., Butterworth, D. S., & Plagányi, É. E. (2008). A history of recent bases for management and the development of a species-combined Operational Management Procedure for the South African hake resource. African Journal of Marine Science, 30(2), 291-310. DOI: http://dx.doi.org/10.2989/AJMS.2008.30.2.8.558en_ZA
dc.identifier.issn1814-232Xen_ZA
dc.identifier.ris TY - Journal Article AU - Rademeyer, Rebecca A AU - Plagányi, Éva E AU - Butterworth, Doug S AB - The bases for historical catch limits placed on the hake fishery are reviewed in brief for earlier years and then in some depth over the period from 1991 when the Operational Management Procedure (OMP) approach was introduced for this fishery. The new OMP implemented from 2007 was the first to be based on the use of rigorous species-disaggregated assessments of the resource as Operating Models. The paper describes the Reference Set and range of robustness trials, together with the associated Operating Models, which were used for the simulation testing of the new OMP. Performance statistics for a number of candidate OMPs are compared, and the two key trade-off decisions in the selection process discussed (substantial Merluccius paradoxus and catch per unit effort [CPUE] recovery, and total allowable catch [TAC] stability constraints). Details of the OMP adopted and how its formulae depend on recent trends in CPUE and survey estimates of abundance are provided. OMP-2007, which is tuned to a median 20-year recovery target of 20% of pristine spawning biomass for M. paradoxus and a 50% increase in CPUE over the next 10 years, has been adopted for recommending hake TACs over the 2007–2010 period until the next scheduled major review. A set of general guidelines adopted for the process of possible overruling of recommendations from OMPs or bringing forward their reviews within an otherwise intended four-year cycle is detailed. DA - 2010 DB - OpenUCT DP - University of Cape Town J1 - African Journal of Marine Science KW - hake KW - Merluccius KW - management KW - management procedure KW - OMP KW - South Africa LK - https://open.uct.ac.za PB - University of Cape Town PY - 2010 SM - 1814-232X T1 - A history of recent bases for management and the development of a species-combined Operational Management Procedure for the South African hake resource TI - A history of recent bases for management and the development of a species-combined Operational Management Procedure for the South African hake resource UR - http://hdl.handle.net/11427/17643 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/17643
dc.identifier.vancouvercitationRademeyer RA, Plagányi ÉE, Butterworth DS. A history of recent bases for management and the development of a species-combined Operational Management Procedure for the South African hake resource. African Journal of Marine Science. 2010; http://hdl.handle.net/11427/17643.en_ZA
dc.languageengen_ZA
dc.publisherNational Inquiry Services Centreen_ZA
dc.publisher.departmentMarine Resource Assessment and Management Groupen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.sourceAfrican Journal of Marine Scienceen_ZA
dc.source.urihttp://www.ajol.info/index.php/ajms
dc.subjecthake
dc.subjectMerluccius
dc.subjectmanagement
dc.subjectmanagement procedure
dc.subjectOMP
dc.subjectSouth Africa
dc.titleA history of recent bases for management and the development of a species-combined Operational Management Procedure for the South African hake resourceen_ZA
dc.typeJournal Articleen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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