The effect of directional wind components on survival of Little Penguins <i>Eudyptula minor</i>


  • Lucia-Marie Billie Ganendran
  • Leesa Ann Sidhu
  • Edward Arthur Catchpole
  • Peter Dann
  • Lynda E Chambers



We live in an age of increased awareness of climate change and its potential effects on our ecosystems. Here we look at the effect of one aspect of climate, directional wind components, on the survival of Little Penguins Eudyptula minor on Phillip Island in south-eastern Australia, using mark-recapture data gathered over a 42 year period since 1968. We apply biologically realistic age structures for the survival and recapture probabilities, and use mean seasonal wind magnitudes from the four cardinal compass directions as covariates in our modelling of the survival probability. Results indicate that first year survival is most affected by southerly winds in the winter prior to the chick's birth, which increase survival, and by easterly winds in the summer of hatching/fledging, which decrease survival. Adult survival is most affected by increasing northerly winds in the autumn following moult (positively) and by easterly winds in the preceding summer (negatively). For both first-year and adult birds, increasing easterly summer wind is associated with decreased survival, possibly due to reduced flows of nutrient rich waters from western Bass Strait. References
  • D. G. Ainley, J. Russell, S. Jenouvrier, E. Woehler, P. O. Lyver, W. R. Fraser, and G. L. Kooyman. Antarctic penguin response to habitat change as earth's troposphere reaches $2^{\circ }$C above preindustrial levels. Ecological Monographs, 80:49--66, 2010.
  • C. J. Brown, E. A. Fulton, A. J. Hobday, R. J. Matear, H. P. Possingham, C. Bulman, V. Christensen, R. E. Forrest, P. C. Gehrke, N. A. Gribble, S. P. Griffiths, H. Lozano-Montes, J. M. Martin, S. Metcalf, T. A. Okey, R. Watson, and A. J. Richardson. Effects of climate--driven primary production changes on marine food webs: implications for fisheries and conservation. Global Change Biology, 16:1194--1212, 2010. doi:10.1111/j.1365-2486.2009.02046.x
  • K. Burnham and D. Anderson. Model selection and multimodel inference: a practical information-theoretic approach. Springer Verlag, 2002.
  • E. A. Catchpole, S. N. Freeman, B. J. T. Morgan, and M. P. Harris. Integrated recovery/recapture data analysis. Biometrics, 54:33--46, 1998. doi:10.2307/2533993
  • L. E. Chambers, C. A. Devney, B. C. Congdon, N. Dunlop, E. J. Woehler, and P. Dann. Observed and predicted effects of climate on Australian seabirds. Emu, 111:235--251, 2011. doi:10.1071/MU10033
  • M. Collins, J. M. Cullen, and P. Dann. Seasonal and annual foraging movements of Little Penguins from Phillip Island, Victoria. Wildlife Research, 26:705--721, 1999. doi:10.1071/WR98003
  • R. M. Cormack. Estimates of survival from the sighting of marked animals. Biometrika, 51:429--438, 1964. doi:10.1093/biomet/51.3-4.429
  • J. M. Cullen, L. E. Chambers, P. C. Coutin, and P. Dann. Predicting onset and success of breeding in little penguins Eudyptula minor from ocean temperatures. Marine Ecology Progress Series, 378:269--278, 2009. doi:10.3354/meps07881
  • P. Dann. An experimental manipulation of clutch size in the Little Penguin Eudyptula minor. Emu, 88:101--103, 1988. doi:10.1071/MU9880101
  • P. Dann. Distribution, population trends and factors influencing the population size of Little Penguins Eudyptula minor on Phillip Island, Victoria. Emu, 91(5):263--272, 1992. doi:10.1071/MU9910263
  • P. Dann and J. M. Cullen. Survival, patterns of reproduction and lifetime reproductive output in the Little Blue Penguins (Eudyptula minor) on Phillip Island, Victoria, Australia. In L. S. Davis and J. T. Darby, editors, Penguin Biology, pages 63--84. Academic Press, San Diego, 1990.
  • P. Dann, J. M. Cullen, R. Thoday, and R. Jessop. Movements and patterns of mortality at sea of Little Penguins Eudyptula minor from Phillip Island, Victoria. Emu, 91(5):278--286, 1992. doi:10.1071/MU9910278
  • S. T. Garnett and G. M. Crowley. The Action Plan for Australian Birds 2000. Environment Australia, Canberra, 2000.
  • K. E. Harrigan. Causes of mortality of Little Penguins Eudyptula minor in Victoria. Emu, 91:273--277, 1992.
  • A. J. Hoskins, P. Dann, Y. Ropert-Coudert, A. Kato, A. Chiaradia, D. P. Costa, and J. P. Y. Arnould. Foraging behaviour and habitat selection at sea in Little Penguins Eudyptula minor during the chick-guard stage of breeding. Marine Ecology Progress Series, 366:293--303, 2008.
  • G. M. Jolly. Explicit estimates from capture-recapture data with both death and immigration-stochastic models. Biometrika, 52:225--247, 1965. doi:10.2307/2333826
  • B. R. King, J. T. Hicks, and J. Cornelius. Population changes, breeding cycles and breeding success over six years in a seabird colony at Michaelmas Cay, Queensland. Emu, 92:1--10, 1992. doi:10.1071/MU9920001
  • P. McCullagh and J. A. Nelder. Generalized Linear Models. Chapman and Hall, London, 2nd edition, 1989.
  • C. McCutcheon, P. Dann, M. Salton, L. Renwick, A. J. Hoskins, A. M. Gormley, and J. P. Y. Arnould. The foraging range of Little Penguins (Eudyptula minor) during winter. Emu (online first), 2011. doi:10.1071/MU10078
  • M. J. Mickelson, P. Dann, and J. M. Cullen. Sea temperature in Bass Strait and breeding success of the Little Penguins Eudyptula minor at Phillip Island, South-eastern Australia. Emu, 91(5):355--368, 1992. doi:10.1071/MU9910355
  • I. C. T. Nisbet and P. Dann. Reproductive performance of little penguins in relation to year, age, pair-bond duration, breeding date and individual quality. Journal of Avian Biology, 40:296--308, 2009. doi:10.1111/j.1600-048X.2008.04563.x
  • P. N. Reilly and J. M. Cullen. The Little Penguin Eudyptula minor in Victoria. {II}: Breeding. Emu, 81:1--19, 1981. doi:10.1071/MU9810001
  • Y. Ropert-Coudert, A. Kato, and A. Chiaradia. Impact of small-scale environmental perturbations on local marine food resources: a case study of a predator, the little penguin. In Proceedings of the Royal Society B, volume 276, pages 4105--4109, 2009. doi:10.1098/rspb.2009.1399
  • P. A. Sandery. Seasonal variability of water mass properties in Bass Strait: three-dimensional oceanographic modelling studies. PhD thesis, Flinders University, Adelaide, 2007.
  • G. A. F. Seber. A note on the multiple recapture census. Biometrika, 52:249--259, 1965. doi:10.1093/biomet/52.1-2.249
  • L. A. Sidhu. Analysis of recovery-recapture data for Little Penguins. PhD thesis, School of Physical, Environmental and Mathematical Sciences, The University of New South Wales at the Australian Defence Force Academy, 2007.
  • L. A. Sidhu, E. A. Catchpole, and P. Dann. Mark-recapture-recovery modeling and age-related survival in Little Penguins Eudyptula minor. The Auk, 124:815--827, 2007. doi:10.1642/0004-8038(2007)124[815:MMAASI]2.0.CO;2
  • L. A. Sidhu, E. A. Catchpole, and P. Dann. Modelling banding effect and tag loss for Little Penguins Eudyptula minor. In W. McLean and A. J. Roberts, editors, Proceedings of the 15th Biennial Computational Techniques and Applications Conference, CTAC-2010, volume 52 of ANZIAM Journal, pages C206--C221, 2011. [June 6, 2011].





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