'Nature is on the brink of burnout,' WWF warns as COP16 biodiversity summit opens What do African forest elephants, leatherback turtles in Guyana and river trout in mainland France have in common? The answer is that all three have been highlighted in the latest Living Planet report from the World Wide Fund for Nature. They are linked in a far from positive way, as the report says they are part of a long list of endangered species of wild vertebrate populations that have declined by 73 percent since 1970 alone. That report as global environmental leaders gather in Colombia for COP16, the UN's biodiversity conference. In Perspective, we spoke to Chief Executive Officer for WWF France Véronique Andrieux.