= 2 Introductory material: Ecopath =

This chapter contains details of the theory underpinning the functioning of Ecopath: [[Mortality for a prey is consumption for a predator.htm|Mortality for a prey is consumption for a predator]]; [[The energy balance of a box.htm|The energy balance of a box]]; [[On the need for input parameters.htm|On the need for input parameters]]; [[Defining the system.htm|Defining the system]]; [[Dealing with open system problems.htm|Dealing with open system problems]]; [[Production.htm|Production]]; [[Consumption.htm|Consumption]]; [[Other mortality.htm|Other mortality]]; and [[Representation of multi stanza.htm|Representation of multi-stanza life histories]].

See Ecopath inputs and [[Using Ecopath. Part 2 Parameterization and outputs.htm|Ecopath outputs]] for links to instructions for using Ecosim.