Reporting the biodiversity impacts of greenhouse gas emissions.

There are increasing demands for organisations and governments to report their biodiversity impacts, yet there are limited methods to account for the consequences of emitting greenhouse gases on global biodiversity. We use published evidence to derive a conversion factor of approximately 2.3 × 10 -7 species expected to be committed to extinction per tCO 2 e emitted. We demonstrate how this conversion factor can be used to account for emissions-related biodiversity impacts of organisations and nations.