Changes between Version 2 and Version 3 of EwEugAbout


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Timestamp:
2010-11-18 01:13:40 (9 years ago)
Author:
shermanl
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  • EwEugAbout

    v2 v3  
    33EwE6 is an ecological software suite for personal computers that has been under development for more than a decade. The development is now centreed at the University of British Columbia's Fishery Centre, while applications are widespread throughout the world. The software has more than 2500 registered users in 124 countries, and more than two hundred publications based on the software have appeared, see www.ecopath.org. The approach is thoroughly documented in the scientific literature, and key references are mentioned below. 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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    5   Address ecological questions; 
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    7   Evaluate ecosystem effects of fishing; 
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    9   Explore management policy options; 
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    11   Evaluate impact and placement of marine protected areas; 
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    13   Evaluate effect of environmental changes. 
     5 *  Address ecological questions; 
     6 *  Evaluate ecosystem effects of fishing; 
     7 *  Explore management policy options; 
     8 *  Evaluate impact and placement of marine protected areas; 
     9 *  Evaluate effect of environmental changes. 
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    1511The foundation of the EwE suite is an Ecopath model (Christensen and Pauly, 1992; Pauly et al., 2000), which creates a static mass-balanced snapshot of the resources in an ecosystem and their interactions, represented by trophically linked biomass 'pools'. The biomass pools consist of a single species, or species groups representing ecological guilds. Pools may be further split into ontogenetic linked groups; a group may as an example be split in larvae, juvenile, age 1-2, and spawners (age 3+). Ecopath data requirements are relatively simple, and generally already available from stock assessment, ecological studies, or the literature: biomass estimates, total mortality estimates, consumption estimates, diet compositions, and fishery catches.