Island closure feasibility study power analysis results for Dassen and Robben islands

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dc.contributor.authorRobinson, William M L
dc.contributor.authorButterworth, Doug S
dc.date.accessioned2016-03-22T09:10:10Z
dc.date.available2016-03-22T09:10:10Z
dc.date.issued2014
dc.date.updated2016-03-22T07:14:13Z
dc.description.abstractThe power analysis for penguin responses to fishing around Dassen and Robben islands has been completed. Response variables considered are chick condition, active nest proportion, fledging success, chick growth, foraging path length, and foraging trip duration. Although complete results are given here only for the first two of these variables, overall there are clear indications regarding the residual variances associated with these variables. Those variances are now estimable for Dassen and Robben islands with sufficient reliability to allow a decision on whether an experimental closure programme could yield definitive conclusions regarding the impact of fishing close to island colonies on penguin demographics within a realistic time span. Thus the purpose of the feasibility study has been achieved and the study can be concluded, with the island closure experiment commenced for these two islands. Definitive results from the experiment can be expected for both islands with about 2–4 years’ additional data.en_ZA
dc.identifier.apacitationRobinson, W. M. L., & Butterworth, D. S. (2014). <i>Island closure feasibility study power analysis results for Dassen and Robben islands</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group. Retrieved from http://hdl.handle.net/11427/18145en_ZA
dc.identifier.chicagocitationRobinson, William M L, and Doug S Butterworth <i>Island closure feasibility study power analysis results for Dassen and Robben islands.</i> University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group, 2014. http://hdl.handle.net/11427/18145en_ZA
dc.identifier.citationRobinson, W. M. L., & Butterworth, D. S. (2014). Island closure feasibility study power analysis results for Dassen and Robben islands. FISHERIES.en_ZA
dc.identifier.ris TY - Working Paper AU - Robinson, William M L AU - Butterworth, Doug S AB - The power analysis for penguin responses to fishing around Dassen and Robben islands has been completed. Response variables considered are chick condition, active nest proportion, fledging success, chick growth, foraging path length, and foraging trip duration. Although complete results are given here only for the first two of these variables, overall there are clear indications regarding the residual variances associated with these variables. Those variances are now estimable for Dassen and Robben islands with sufficient reliability to allow a decision on whether an experimental closure programme could yield definitive conclusions regarding the impact of fishing close to island colonies on penguin demographics within a realistic time span. Thus the purpose of the feasibility study has been achieved and the study can be concluded, with the island closure experiment commenced for these two islands. Definitive results from the experiment can be expected for both islands with about 2–4 years’ additional data. DA - 2014 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2014 T1 - Island closure feasibility study power analysis results for Dassen and Robben islands TI - Island closure feasibility study power analysis results for Dassen and Robben islands UR - http://hdl.handle.net/11427/18145 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/18145
dc.identifier.vancouvercitationRobinson WML, Butterworth DS. Island closure feasibility study power analysis results for Dassen and Robben islands. 2014 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18145en_ZA
dc.languageengen_ZA
dc.publisher.departmentMarine Resource Assessment and Management Groupen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.titleIsland closure feasibility study power analysis results for Dassen and Robben islandsen_ZA
dc.typeWorking Paperen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceResearch paperen_ZA
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