The Ecopath module.Ecopath module is to simulate the biological compositions and energy flows
between the biological communities using homogeneous linear equation, where important ecological
parameters, such as biomass, amounts of production and consumption, nutritional conversion in the
ecosystem are determined based on the law of conservation of energy. The simplified food web
model constructed by Ecopath focus on the study of ecological interaction and can reflect the energy
flow in the food web and biomass, and the process and results of biomass production.