A comparison between ADAPT-VPA and ASPM-based assessments of the Gulf of Maine cod stock
| dc.contributor.author | Butterworth, Doug S | |
| dc.contributor.author | Rademeyer, Rebecca A | |
| dc.contributor.author | Plagányi, Éva E | |
| dc.date.accessioned | 2016-04-19T12:39:34Z | |
| dc.date.available | 2016-04-19T12:39:34Z | |
| dc.date.issued | 2005 | |
| dc.date.updated | 2016-04-19T12:38:28Z | |
| dc.description.abstract | ADAPT-VPA and ASPM assessment methods are applied to the same data set for the Gulf of Maine cod stock to attempt to ascertain the reasons for the rather different results provided by past applications of the two approaches. A number of sensitivity tests for the ASPM assessment are also conducted. Results indicate the primary reasons for the past differences to be the longer period of data which the ASPM approach is able to take into account, and the fact that this approach estimates selectivity to be decreasing at larger ages whereas the ADAPT-VPA method assumes the selectivity at such ages to be flat. Arguments are presented that an ASPM-based assessment of this resource would provide a better basis for management advice than the current ADAPT-VPA method. Since the former consistently indicates current status of the resource to be appreciably better relative to the sp BMSY reference point than does the latter, such a suggestion has important implications for current management measures for the Gulf of Maine cod fishery. | en_ZA |
| dc.identifier.apacitation | Butterworth, D. S., Rademeyer, R. A., & Plagányi, É. E. (2005). <i>A comparison between ADAPT-VPA and ASPM-based assessments of the Gulf of Maine cod stock</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group. Retrieved from http://hdl.handle.net/11427/18984 | en_ZA |
| dc.identifier.chicagocitation | Butterworth, Doug S, Rebecca A Rademeyer, and Éva E Plagányi <i>A comparison between ADAPT-VPA and ASPM-based assessments of the Gulf of Maine cod stock.</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group, 2005. http://hdl.handle.net/11427/18984 | en_ZA |
| dc.identifier.citation | Butterworth, D. S., Rademeyer, R. A., & Plagányi, É. E. (2005). A comparison between ADAPT-VPA and ASPM-based assessments of the Gulf of Maine cod stock. MARAM: University of Cape Town. | en_ZA |
| dc.identifier.ris | TY - Working Paper AU - Butterworth, Doug S AU - Rademeyer, Rebecca A AU - Plagányi, Éva E AB - ADAPT-VPA and ASPM assessment methods are applied to the same data set for the Gulf of Maine cod stock to attempt to ascertain the reasons for the rather different results provided by past applications of the two approaches. A number of sensitivity tests for the ASPM assessment are also conducted. Results indicate the primary reasons for the past differences to be the longer period of data which the ASPM approach is able to take into account, and the fact that this approach estimates selectivity to be decreasing at larger ages whereas the ADAPT-VPA method assumes the selectivity at such ages to be flat. Arguments are presented that an ASPM-based assessment of this resource would provide a better basis for management advice than the current ADAPT-VPA method. Since the former consistently indicates current status of the resource to be appreciably better relative to the sp BMSY reference point than does the latter, such a suggestion has important implications for current management measures for the Gulf of Maine cod fishery. DA - 2005 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2005 T1 - A comparison between ADAPT-VPA and ASPM-based assessments of the Gulf of Maine cod stock TI - A comparison between ADAPT-VPA and ASPM-based assessments of the Gulf of Maine cod stock UR - http://hdl.handle.net/11427/18984 ER - | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11427/18984 | |
| dc.identifier.vancouvercitation | Butterworth DS, Rademeyer RA, Plagányi ÉE. A comparison between ADAPT-VPA and ASPM-based assessments of the Gulf of Maine cod stock. 2005 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18984 | 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.title | A comparison between ADAPT-VPA and ASPM-based assessments of the Gulf of Maine cod stock | en_ZA |
| dc.type | Working Paper | en_ZA |
| uct.type.filetype | Text | |
| uct.type.filetype | Image | |
| uct.type.publication | Research | en_ZA |
| uct.type.resource | Research paper | en_ZA |