Is pseudo-replication biasing results from analyses from the island closure experiment which model individual penguin responses directly?

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dc.contributor.authorButterworth, Doug S
dc.contributor.authorRoss-Gillespie, Andrea
dc.date.accessioned2020-01-23T12:01:12Z
dc.date.available2020-01-23T12:01:12Z
dc.date.issued2019
dc.description.abstractA simple simulation study is used to investigate the impact of possible pseudo-replication arising from the use of individual penguin observations, in contrast to annually aggregated measures, in analyses of the island closure experiment which attempt to estimate the possible effect on penguins of closure of the neighbourhood of these islands to pelagic fishing. Unlike the case for estimators based on annually aggregated inputs, those based on the use of individual observations are found to lead to possibly substantially negatively biased estimates of the standard errors of the parameter that reflects the effect on penguins of these closures. This means that past results concerning the statistical significance and probabilities that island closures impact penguins from analyses based on individual observations need to be reconsidered. Previous analyses using this approach should ideally be repeated based on year-aggregated inputs, and future analyses need to avoid repeating this earlier approach.en_US
dc.identifier.apacitationButterworth, D., & Ross-Gillespie, A. (2019). <i>Is pseudo-replication biasing results from analyses from the island closure experiment which model individual penguin responses directly?</i> ,Faculty of Science ,Department of Mathematics and Applied Mathematics. Retrieved from http://hdl.handle.net/11427/30784en_ZA
dc.identifier.chicagocitationButterworth, Doug, and Andrea Ross-Gillespie <i>Is pseudo-replication biasing results from analyses from the island closure experiment which model individual penguin responses directly?.</i> ,Faculty of Science ,Department of Mathematics and Applied Mathematics, 2019. http://hdl.handle.net/11427/30784en_ZA
dc.identifier.citationButterworth, D., Ross-Gillespie, A. 2019. Is pseudo-replication biasing results from analyses from the island closure experiment which model individual penguin responses directly?.en_ZA
dc.identifier.ris TY - Report AU - Butterworth, Doug AU - Ross-Gillespie, Andrea AB - A simple simulation study is used to investigate the impact of possible pseudo-replication arising from the use of individual penguin observations, in contrast to annually aggregated measures, in analyses of the island closure experiment which attempt to estimate the possible effect on penguins of closure of the neighbourhood of these islands to pelagic fishing. Unlike the case for estimators based on annually aggregated inputs, those based on the use of individual observations are found to lead to possibly substantially negatively biased estimates of the standard errors of the parameter that reflects the effect on penguins of these closures. This means that past results concerning the statistical significance and probabilities that island closures impact penguins from analyses based on individual observations need to be reconsidered. Previous analyses using this approach should ideally be repeated based on year-aggregated inputs, and future analyses need to avoid repeating this earlier approach. DA - 2019 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PY - 2019 T1 - Is pseudo-replication biasing results from analyses from the island closure experiment which model individual penguin responses directly? TI - Is pseudo-replication biasing results from analyses from the island closure experiment which model individual penguin responses directly? UR - http://hdl.handle.net/11427/30784 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/30784
dc.identifier.vancouvercitationButterworth D, Ross-Gillespie A. Is pseudo-replication biasing results from analyses from the island closure experiment which model individual penguin responses directly?. 2019 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/30784en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Mathematics and Applied Mathematicsen_US
dc.publisher.facultyFaculty of Scienceen_US
dc.titleIs pseudo-replication biasing results from analyses from the island closure experiment which model individual penguin responses directly?en_US
dc.typeReporten_US
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