Comparative population ecology of New Zealand’s Eudyptes and Megadyptes penguins
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Transcript of Comparative population ecology of New Zealand’s Eudyptes and Megadyptes penguins
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Little (Eudyptula minor)Eastern Rockhopper(E. filholi)Fiordland(E. pachyrhynchus)Snares(E. robustus)Erect-crested(E. sclateri)Yellow-eyed(M. antipodes)
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iron rich (river run-off fertilization)high productivityiron deficiency(compounded by ocean warming)low productivity
Population developments driven primarily by ocean productivity
Population developments driven primarily by ocean productivity
exotic predatorsStoat attack on Fiordland penguin chick at Gorge River, West Coast
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270 bp (mean)
Population projection YEP, Boulder Beach Complex, Otago Peninsula
DEGRADATION OF FORAGING HABITAT
HUMAN DISTURBANCE
FISHERIES BYCATCH
POLUTIONPopulation developments driven primarily by anthropogenic factors
Climate changeOcean warmingEastern Rockhopper penguin
Erect-crested penguin
Climate changeOcean warmingSnares penguinLimited breeding habitat Eastern Rockhopper penguin
Erect-crested penguin
Climate changeOcean warmingFiordland penguinExotic predatorsSnares penguinLimited breeding habitat Eastern Rockhopper penguin
Erect-crested penguin
Climate changeOcean warmingFiordland penguinExotic predatorsYellow-eyed penguin (mainland)Anthropogenic influences(plus all of the below)Snares penguinLimited breeding habitat Eastern Rockhopper penguin
Erect-crested penguin
