Subscribe now

Analysis and Environment

Rewilding is often championed, but could it be bad for biodiversity?

Conservation projects in wealthy but nature-depleted countries can cause food and timber production to “leak” into poorer, biodiverse nations 

By Madeleine Cuff

13 February 2025

A Eurasian beaver that was reintroduced in Devon, UK

A Eurasian beaver that was reintroduced in Devon, UK

Nature Picture Library/Alamy

Between 1990 and 2014, forests in Europe expanded by 13 million hectares, an area roughly equivalent to the size of Greece – but that came with a cost. Crops consumed in the European Union had to be grown somewhere, so, in other countries – mainly tropical nations – around 11 million hectares of forest was chopped down to make up for the drop in EU production.

Such biodiversity “leakage” is a major problem with conservation and rewilding projects, particularly schemes in higher-income, industrialised countries that tend to have lower biodiversity, says …

Sign up to our weekly newsletter

Receive a weekly dose of discovery in your inbox! We'll also keep you up to date with New Scientist events and special offers.

Sign up

To continue reading, subscribe today with our introductory offers

Piano Exit Overlay Banner Mobile Piano Exit Overlay Banner Desktop