Ecopath with Ecosim (EwE) is an ecological modeling software suite for personal computers that has built and extended on for almost twenty years. The development is centered at the University of British Columbia’s Fishery Centre, while applications are widespread throughout the world. EwE is the first ecosystem level simulation model to be widely and freely accessible. As of October 2008 there were 5,649 registered users in 164 different countries (, 27th Oct 2008) and well over 300 publications making EwE an important modelling approach to explore ecosystem related questions in marine science. For all these reasons, Ecopath software was recently recognized as one of NOAA’s top ten scientific breakthroughs in the last 200 years. EwE has three main components: Ecopath – a static, mass-balanced snapshot of the system; Ecosim – a time dynamic simulation module for policy exploration; and Ecospace – a spatial and temporal dynamic module primarily designed for exploring impact and placement of protected areas. The Ecopath software package can be used to ...

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