Analysis of simulated Antarctic minke surveys using the "standard" method and the "direct duplicate" method
| dc.contributor.author | Branch, Trevor A | |
| dc.date.accessioned | 2016-02-26T13:32:51Z | |
| dc.date.available | 2016-02-26T13:32:51Z | |
| dc.date.issued | 2006 | |
| dc.date.updated | 2016-02-26T12:09:35Z | |
| dc.description.abstract | Four new scenarios (sc33–sc36) of simulated survey data are analysed using the “standard” distance sampling method and the direct duplicate method of Palka (1995). The new scenarios were “blind” in that true simulated densities and the factors included were not revealed. Estimated densities were 0.029, 0.021, 0.082, and 0.063 whales per km 2 for the four scenarios using the “standard” method, and 0.029, 0.020, 0.081, and 0.062 whales per km 2 for the direct duplicate method. Some negative bias in estimates is expected from the standard method due to whales on the trackline being missed by the surveys. If true, the direct duplicate method then failed to correct for this bias for these scenarios, as resulting estimates were very similar to those obtained from the “standard” method. | en_ZA |
| dc.identifier.apacitation | Branch, T. A. (2006). <i>Analysis of simulated Antarctic minke surveys using the "standard" method and the "direct duplicate" method</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group. Retrieved from http://hdl.handle.net/11427/17300 | en_ZA |
| dc.identifier.chicagocitation | Branch, Trevor A <i>Analysis of simulated Antarctic minke surveys using the "standard" method and the "direct duplicate" method.</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group, 2006. http://hdl.handle.net/11427/17300 | en_ZA |
| dc.identifier.citation | Branch, T. A. (2006). Analysis of simulated Antarctic minke surveys using the “standard” method and the “direct duplicate” method. IWC Paper SC/58/IA14: 5pp. | en_ZA |
| dc.identifier.ris | TY - Working Paper AU - Branch, Trevor A AB - Four new scenarios (sc33–sc36) of simulated survey data are analysed using the “standard” distance sampling method and the direct duplicate method of Palka (1995). The new scenarios were “blind” in that true simulated densities and the factors included were not revealed. Estimated densities were 0.029, 0.021, 0.082, and 0.063 whales per km 2 for the four scenarios using the “standard” method, and 0.029, 0.020, 0.081, and 0.062 whales per km 2 for the direct duplicate method. Some negative bias in estimates is expected from the standard method due to whales on the trackline being missed by the surveys. If true, the direct duplicate method then failed to correct for this bias for these scenarios, as resulting estimates were very similar to those obtained from the “standard” method. DA - 2006 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2006 T1 - Analysis of simulated Antarctic minke surveys using the "standard" method and the "direct duplicate" method TI - Analysis of simulated Antarctic minke surveys using the "standard" method and the "direct duplicate" method UR - http://hdl.handle.net/11427/17300 ER - | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11427/17300 | |
| dc.identifier.vancouvercitation | Branch TA. Analysis of simulated Antarctic minke surveys using the "standard" method and the "direct duplicate" method. 2006 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/17300 | 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 | Analysis of simulated Antarctic minke surveys using the "standard" method and the "direct duplicate" method | 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 | Discussion paper | en_ZA |