Summary of the most recent South African hake assessments
| dc.contributor.author | Rademeyer, Rebecca A | |
| dc.contributor.author | Butterworth, Doug S | |
| dc.date.accessioned | 2016-03-15T09:18:14Z | |
| dc.date.available | 2016-03-15T09:18:14Z | |
| dc.date.issued | 2006 | |
| dc.date.updated | 2016-03-15T08:53:22Z | |
| dc.description.abstract | In the most recent assessments (Rademeyer and Butterworth, 2006) of the South African hake resource, Merluccius paradoxus and M. capensis are treated as two separate stocks, but are assessed simultaneously within a single assessment framework and for the south and west coasts combined. This simultaneous assessment is necessary because much of the data is available in species-aggregated form only. Thus the model is one of two species and two spatial strata (see Fig. 1) with differences in the distributions by age within each stratum handled by allowing for stratum-specific commercial (in principle, though not in this particular implementation) and survey selectivities, rather than explicitly modelling movement. This follows the recommendation from the January 2004 BENEFIT/NRF/BCLME workshop (BENEFIT, 2004), though the further recommendation of that workshop to extend to four spatial strata (two by depth as well as two longshore) has yet to be implemented. The only data available which are explicitly disaggregated by species are those from research surveys that have taken place from 1986 to the present. However the framework does admit implicit disaggregation of data from the commercial fishery as summarised below. | en_ZA |
| dc.identifier.apacitation | Rademeyer, R. A., & Butterworth, D. S. (2006). <i>Summary of the most recent South African hake assessments</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group. Retrieved from http://hdl.handle.net/11427/17795 | en_ZA |
| dc.identifier.chicagocitation | Rademeyer, Rebecca A, and Doug S Butterworth <i>Summary of the most recent South African hake assessments.</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group, 2006. http://hdl.handle.net/11427/17795 | en_ZA |
| dc.identifier.citation | Rademeyer, R. A., & Butterworth, D. S. (2006). Summary of the most recent South African hake assessments. In Joint hake research planning workshop document. | en_ZA |
| dc.identifier.ris | TY - Working Paper AU - Rademeyer, Rebecca A AU - Butterworth, Doug S AB - In the most recent assessments (Rademeyer and Butterworth, 2006) of the South African hake resource, Merluccius paradoxus and M. capensis are treated as two separate stocks, but are assessed simultaneously within a single assessment framework and for the south and west coasts combined. This simultaneous assessment is necessary because much of the data is available in species-aggregated form only. Thus the model is one of two species and two spatial strata (see Fig. 1) with differences in the distributions by age within each stratum handled by allowing for stratum-specific commercial (in principle, though not in this particular implementation) and survey selectivities, rather than explicitly modelling movement. This follows the recommendation from the January 2004 BENEFIT/NRF/BCLME workshop (BENEFIT, 2004), though the further recommendation of that workshop to extend to four spatial strata (two by depth as well as two longshore) has yet to be implemented. The only data available which are explicitly disaggregated by species are those from research surveys that have taken place from 1986 to the present. However the framework does admit implicit disaggregation of data from the commercial fishery as summarised below. DA - 2006 DB - OpenUCT DP - University of Cape Town KW - South African KW - Hake KW - assessments LK - https://open.uct.ac.za PB - University of Cape Town PY - 2006 T1 - Summary of the most recent South African hake assessments TI - Summary of the most recent South African hake assessments UR - http://hdl.handle.net/11427/17795 ER - | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11427/17795 | |
| dc.identifier.vancouvercitation | Rademeyer RA, Butterworth DS. Summary of the most recent South African hake assessments. 2006 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/17795 | en_ZA |
| dc.language | eng | en_ZA |
| dc.publisher.department | Marine Resource Assessment and Management Group | en_ZA |
| dc.publisher.faculty | Faculty of Science | en_ZA |
| dc.publisher.institution | University of Cape Town | |
| dc.subject | South African | |
| dc.subject | Hake | |
| dc.subject | assessments | |
| dc.title | Summary of the most recent South African hake assessments | en_ZA |
| dc.type | Working Paper | en_ZA |
| uct.type.publication | Research | en_ZA |
| uct.type.resource | Research paper | en_ZA |