Leader, aquatic ecology and water quality management group, Wageningen University
Although much of his work has focused on the ecosystems of lakes, he has also worked with a range of scientists from other disciplines to address issues of stability and shifts in natural and social systems. Examples include the feedback between atmospheric carbon and the earth temperature, the collapse of ancient societies, inertia and shifts in public opinion, evolutionary emergence of patterns of species similarity, the effect of climatic extremes on forest dynamics and the balance of facilitation and competition in plant communities. With the help of a Spinoza award and an European Research Council [ERC] advanced grant, he now works on finding generic early warning signals for critical transitions.