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Prof. Andy Purvis
Coordinating Lead Author, IPBES Global Assessment and Life Sciences Research Leader at The Natural History Museum, London
The IPBES Global Assessment estimated that 1 million animal and plant species are threatened with extinction. It also documents how human actions have changed many aspects of nature and its contributions to people; but species threatened with extinction resonate with the media and the public in ways that degradation of habitats and alteration of rates of ecosystem processes perhaps don’t, so the figure was widely reported.
IPBES is the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services, an independent intergovernmental body that was established in 2012 to strenthen links between science and policy to support conservation and sustainable use of biodiversity, long-term human well-being, and sustainable development
Because only the Summary for Policymakers has so far been made available, it wasn’t clear where the figure of 1 million threatened species came from. Some journalists and researchers asked me, so I explained it to them, and will explain it again here. Some other writers, often with a long history of commenting critically on reports highlighting environmental concerns, instead railed against the Global Assessment in general and the figure of 1 million threatened species in particular. Given that these writers often advance empty or bogus arguments, I thought it would be also be useful to explain why these arguments are wrong.
I have therefore written this blog post in the form of thirteen questions and answers.