The 2007 Age-Structured Production Model assessments and projections for the South Coast rock lobster resource-routine update using model fitting to catch-at-age data
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| dc.contributor.author |
Johnston, Susan J
|
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| dc.contributor.author |
Butterworth, Doug S
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| dc.date.accessioned | 2016-03-17T09:41:02Z | |
| dc.date.available | 2016-03-17T09:41:02Z | |
| dc.date.issued | 2007 | |
| dc.identifier.citation | Jonhston, S.J. and Butterworth, D.S. (2007).The 2007 Age-Structured Production Model assessments and projections for the South Coast rock lobster resource-routine update using model fitting to catch-at-age data | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11427/17926 | |
| dc.description.abstract | The assessment conducted in 2006 (WG/06/06/WCRL3) has been routinely extended, taking account of a further year’s catch, CPUE and catch-at-age data. The observed CPUE shows a slight decrease for 2005 (2005/06 season). The sustainable yield estimates are generally very similar to those for the 2006 assessment, although estimates of current biomass levels relative to K increase. The Reference Case (RC) scenario suggests that a TAC of about 330 MT or less would be appropriate to prevent biomass decline in the future. The other two scenarios reported suggest higher values than this. If the catch-at-age data are down-weighted, then this 360 MT level for the TAC is increased to 390 MT. | en_ZA |
| dc.language | eng | en_ZA |
| dc.subject.other | Age-Structured Production Model | |
| dc.subject.other | South coast rock lobster | |
| dc.title | The 2007 Age-Structured Production Model assessments and projections for the South Coast rock lobster resource-routine update using model fitting to catch-at-age data | en_ZA |
| dc.type | Working Paper | en_ZA |
| dc.date.updated | 2016-03-17T09:33:37Z | |
| uct.type.publication | Research | en_ZA |
| uct.type.resource | Research paper | en_ZA |
| dc.publisher.institution | University of Cape Town | |
| dc.publisher.faculty | Faculty of Science | en_ZA |
| dc.publisher.department | Marine Resource Assessment and Management Group | en_ZA |
| dc.identifier.apacitation | Johnston, S. J., & Butterworth, D. S. (2007). <i>The 2007 Age-Structured Production Model assessments and projections for the South Coast rock lobster resource-routine update using model fitting to catch-at-age data</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group. Retrieved from http://hdl.handle.net/11427/17926 | en_ZA |
| dc.identifier.chicagocitation | Johnston, Susan J, and Doug S Butterworth <i>The 2007 Age-Structured Production Model assessments and projections for the South Coast rock lobster resource-routine update using model fitting to catch-at-age data.</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group, 2007. http://hdl.handle.net/11427/17926 | en_ZA |
| dc.identifier.vancouvercitation | Johnston SJ, Butterworth DS. The 2007 Age-Structured Production Model assessments and projections for the South Coast rock lobster resource-routine update using model fitting to catch-at-age data. 2007 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/17926 | en_ZA |
| dc.identifier.ris | TY - Working Paper AU - Johnston, Susan J AU - Butterworth, Doug S AB - The assessment conducted in 2006 (WG/06/06/WCRL3) has been routinely extended, taking account of a further year’s catch, CPUE and catch-at-age data. The observed CPUE shows a slight decrease for 2005 (2005/06 season). The sustainable yield estimates are generally very similar to those for the 2006 assessment, although estimates of current biomass levels relative to K increase. The Reference Case (RC) scenario suggests that a TAC of about 330 MT or less would be appropriate to prevent biomass decline in the future. The other two scenarios reported suggest higher values than this. If the catch-at-age data are down-weighted, then this 360 MT level for the TAC is increased to 390 MT. DA - 2007 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2007 T1 - The 2007 Age-Structured Production Model assessments and projections for the South Coast rock lobster resource-routine update using model fitting to catch-at-age data TI - The 2007 Age-Structured Production Model assessments and projections for the South Coast rock lobster resource-routine update using model fitting to catch-at-age data UR - http://hdl.handle.net/11427/17926 ER - | en_ZA |
