High Quality Content by WIKIPEDIA articles! Carl Walters is an American born biologist known for his work involving fisheries stock assessments, the adaptive management concept, and ecosystem modeling. Walters has been a professor of Zoology and Fisheries at the University of British Columbia since 1969. He is one of the main developers of the computer simulation program Ecosim and is involved in the Sea Around Us Project established by Daniel Pauly, the Quantitative Modeling Group, and the Lenfest Oceans Future Project. His most recent work focuses on how to adjust human behaviors in environments that are full of uncertainty. He is a recent recipient of the Volvo Environment Prize (2006).