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Ben Collen

Ben Collen is head of the Indicators & Assessments Unit at the Zoological Society of London. His research is focussed on developing indicators to monitor change in biodiversity and help guide policy responses to conservation problems. He conducts local scale monitoring on tropical forest fauna in Liberia, and penguins in the Antarctic. Nathalie Pettorelli is a population ecologist, whose research is centred on predicting the impacts of global environmental change on biodiversity. Her work was...See more