He is known for his work as a project leader and core developer of Ecopath, an ecosystem modelling software system widely used in fisheries management.
The citation states that Ecopath "revolutionized scientists' ability worldwide to understand complex marine ecosystems".
He is a professor at the UBC Fisheries Centre at the University of British Columbia, specialising in ecosystem modelling.
His main project is with the Sea Around Us Project working on "database-driven ecosystem model construction", with the aim of using "global, spatial databases to parameterize, balance and fit ecosystem models".
[6] He is also director of the Lenfest Ocean Futures Project,[7] where a visualization system is being developed to support decision making in ecosystem-based fisheries management.