Ecopath with Ecosim: a user's guide (version 5.1). 阅读量： 80. 作者： V Christensen ， CJ Walters ， D Pauly. 展开 . 摘要： The Ecopath with Ecosim (EwE) modeling approach combines software for ecosystem trophic mass balance analysis (Ecopath), with a dynamic modeling capability (Ecosim) for exploring past and future impacts Ecopath by itself is chiefl y an approach for parameterization of ecosystem models, i.e. for obtain- ing a well-described (and well-documented) initial model for dynamic simulations. Its core is that energy (or mass since mass can be measured using an energy unit, which may or may not be converted to a mass unit) is assumed to be conserved. Ecopath with Ecosim: methods, capabilities and limitations. Ecol Model 172:109-39 (2004) by V Christensen, Walters CJ Add To MetaCart. Results 1 - 10 of 135. Next 10 →. ECOPATH with ECOSIM: a user's guide by Villy Christensen, Carl J. Walters, Daniel Pauly, Fisheries Centre , Ecospace is a spatially explicit model for policy evaluation that allows for considering the impact of MPAs in an ecosystem (that is, trophic) context, and that relies on the Ecopath mass-balance approach for most of its parameterization. Additional inputs are movement rates used to compute exchanges between grid Ecopath with Ecosim models are easy to construct and have been for the past 30 years. • We highlight thermodynamic and ecological diagnostics for best practice in Ecopath. • The state of the art in Ecosim time series fitting and calibration are elucidated. • Uncertainty is addressed through Monte Carlo calculations. • Welcome to Ecopath. Welcome to the Ecopath with Ecosim (EwE) Wiki. This Wiki is divided into 3 main sections: EwE6 user manual - The EwE6 user manual, The Ecopath development team would like you to participate in the beta testing program. For four week periods, once or twice per year, you will have the opportunity to use the next An icon for running the software will be placed on your desktop. Otherwise, navigate to the directory in which the model was saved (default: C:Program FilesEcopath with Ecosim 6) and run the programme (EwE6.exe) from there. Some test data sets are included for the initial testing of the software. You can open these from the File menu. Ecopath with Ecosim 1. Introduction The modeling approach 'Ecopath with Ecosim' (EwE, ecopath.org) is being widely used as a tool for analysis of exploited aquatic ecosystems, having reached 2400 registered users in 120 countries, and leading to in excess of 150 publications. EwE - Ecobase integration EcoBase, the open-access database for all the Ecopath with Ecosim (EwE) models published worldwide, is now accessible on-line for all users. As per mid October 2016, 443 Ecopath models are referenced and described in EcoBase, among which 176 models are fully and freely available for download. Christensen V, Walters CJ, Pauly D (2005) Ecopath with Ecosim: a User's guide. Fisheries Centre of University of British Columbia, Vancouver, Canada. 154 pp. Google Scholar Christensen V, Walters C (2000) Ecopath, Ecosim and Ecospace as tools for evaluating ecosystem impact of fisheries. ICES Journal of Marine Science, 57: 697-706 The Ecopath approach was initially presented by Polovina (1984aPolovina ( , 1984b to estimate the biomass and food consumption of functional groups within an ecosystem and was subsequently combined Ecopath with Ecosim (EwE) is an ecological modeling software suite for pers