ECOPATHEcopath with Ecosim (EwE) is a free ecological/ecosystem modeling software suite. 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

  • Address ecological questions;
  • Evaluate ecosystem effects of fishing;
  • Explore management policy options;
  • Analyze impact and placement of marine protected areas;
  • Predict movement and accumulation of contaminants and tracers (Ecotracer);
  • Model effect of environmental changes;
  • Facilitate end-to-end model construction.

The latest release of Ecopath with Ecosim is version 6.5, released in July 2016.


Quick poll

EwE runs on a wide range of Windows versions. Due to changes in the technical landscape we may have to drop support for Windows XP in the next release. Will that affect you?

Will you be affected if a next release of EwE cannot run on Windows XP anymore?

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