Ken H Andersen is a professor in theoretical marine ecology at the Technical University of Denmark, and deputy director of the Centre for Ocean Life,/span>. He has developed the size- and trait-based approach to evaluate the ecological and evolutionary impacts of fishing. This approach searches for patterns in life-history traits between fish species to make general statements about their resilience to fishing. The approach is exemplified in web applications:  ecological impact of fishing a single stock;  evolutionary impact assessments; and  community impact assessment . In his earlier career, Pr. Andersen has worked as a theoretical physicist with pattern formation and fluid turbulence.