Stephen R. Carpenter, Professor of Zoology and Limnology at the University of Wisconsin-Madison, USA, received the 2011 Stockholm Water Prize by H.M. King Carl XVI Gustaf of Sweden for his groundbreaking research that showed how lake ecosystems are affected by the surrounding landscape and human activities.
The human effect on rivers and streams, and the food chain they support, is closely tied to land-use change, such as water diversion and regulation of flows due to dams.