The Age-Structured Production Model for the South Coast rock lobster population extended to be sex- and area-specific, to fit to catch-at-length data, and to use Pope's approximation
| dc.contributor.author | Johnston, Susan J | |
| dc.contributor.author | Butterworth, Doug S | |
| dc.date.accessioned | 2016-04-07T09:34:25Z | |
| dc.date.available | 2016-04-07T09:34:25Z | |
| dc.date.issued | 2008 | |
| dc.date.updated | 2016-04-07T09:33:38Z | |
| dc.description.abstract | The south coast rock lobster resource is modelled using an age-structured-productionmodel (ASPM) which fits to catch-at-length data directly. The model is sexdisaggregated (m/f) and area-disaggregated (A=1,2,3). Population equations have been modified from Baranov equations to Pope’s approximation. This has reduced the number of estimable parameters, and speeded up runtime of the program. Note that the model now includes an option for annual variability in the proportion of recruitment (age 0 lobsters) to each area each year. Though formally there is not interArea movement after this recruitment, in effect this means that there is allowance for such movement, but only for ages less than those which the fishing exploits. | en_ZA |
| dc.identifier.apacitation | Johnston, S. J., & Butterworth, D. S. (2008). <i>The Age-Structured Production Model for the South Coast rock lobster population extended to be sex- and area-specific, to fit to catch-at-length data, and to use Pope's approximation</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group. Retrieved from http://hdl.handle.net/11427/18681 | en_ZA |
| dc.identifier.chicagocitation | Johnston, Susan J, and Doug S Butterworth <i>The Age-Structured Production Model for the South Coast rock lobster population extended to be sex- and area-specific, to fit to catch-at-length data, and to use Pope's approximation.</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group, 2008. http://hdl.handle.net/11427/18681 | en_ZA |
| dc.identifier.citation | Johnston, S. J., & Butterworth, D. S. (2008). The Age-Structured Production Model for the South Coast rock lobster population extended to be sex-and area-specific, to fit to catch-at-length data, and to use Pope’s approximation. WG/02/08/SCRL1. | en_ZA |
| dc.identifier.ris | TY - Working Paper AU - Johnston, Susan J AU - Butterworth, Doug S AB - The south coast rock lobster resource is modelled using an age-structured-productionmodel (ASPM) which fits to catch-at-length data directly. The model is sexdisaggregated (m/f) and area-disaggregated (A=1,2,3). Population equations have been modified from Baranov equations to Pope’s approximation. This has reduced the number of estimable parameters, and speeded up runtime of the program. Note that the model now includes an option for annual variability in the proportion of recruitment (age 0 lobsters) to each area each year. Though formally there is not interArea movement after this recruitment, in effect this means that there is allowance for such movement, but only for ages less than those which the fishing exploits. DA - 2008 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2008 T1 - The Age-Structured Production Model for the South Coast rock lobster population extended to be sex- and area-specific, to fit to catch-at-length data, and to use Pope's approximation TI - The Age-Structured Production Model for the South Coast rock lobster population extended to be sex- and area-specific, to fit to catch-at-length data, and to use Pope's approximation UR - http://hdl.handle.net/11427/18681 ER - | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11427/18681 | |
| dc.identifier.vancouvercitation | Johnston SJ, Butterworth DS. The Age-Structured Production Model for the South Coast rock lobster population extended to be sex- and area-specific, to fit to catch-at-length data, and to use Pope's approximation. 2008 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18681 | 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.other | Age-Structured Production Model | |
| dc.subject.other | South Coast rock lobster | |
| dc.title | The Age-Structured Production Model for the South Coast rock lobster population extended to be sex- and area-specific, to fit to catch-at-length data, and to use Pope's approximation | en_ZA |
| dc.type | Working Paper | en_ZA |
| uct.type.filetype | Text | |
| uct.type.publication | Research | en_ZA |
| uct.type.resource | Research paper | en_ZA |