The GLMM model to estimate the impact of fishing on penguins at the St Croix and Bird Island colonies is updated given further data. For trip length and duration data, there is no evidence to suggest a statistically significant impact of fishery on the penguin populations on these two islands, unless the influential 2016 data points are excluded from the analyses, in which case a significant impact would be indicated for the St Croix forage trip length variable. However, no a priori independent reason to treat 2016 data differently has been put forward to justify such an exclusion. If the maximum distance from the colony is considered, a significant (at the 5% level) negative impact of the fishery is indicated for St Croix.
Reference:
Ross-Gillespie, A. & Butterworth, D. 2019. Updated GLMM results for the south coast penguin colony foraging data. ,Faculty of Science ,Department of Mathematics and Applied Mathematics. http://hdl.handle.net/11427/32396 .
Ross-Gillespie, A., & Butterworth, D. (2019). Updated GLMM results for the south coast penguin colony foraging data ,Faculty of Science ,Department of Mathematics and Applied Mathematics. Retrieved from http://hdl.handle.net/11427/32396
Ross-Gillespie, Andrea, and Doug Butterworth Updated GLMM results for the south coast penguin colony foraging data. ,Faculty of Science ,Department of Mathematics and Applied Mathematics, 2019. http://hdl.handle.net/11427/32396
Ross-Gillespie A, Butterworth D. Updated GLMM results for the south coast penguin colony foraging data. 2019 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/32396