| 25 | | Ecopath is not necessarily a steady-state model. If the biomass for a group is known, e.g., at the beginning of the year and at the beginning of the next year, the biomass accumulation (''BA'') can be calculated as the difference between these biomasses. ''BA'' is a production term that can be entered for all living groups (default is 0), but is calculated for detritus groups ([[Detritus fate.htm|Detritus fate]]). ''BA'' is a flow term, with a rate unit of, e.g., t / km² / year. The default value for ''BA'' is zero indicating no biomass accumulation. A negative value signifies biomass depletion (biomass decreased during period modelled). |
| | 25 | Ecopath is not necessarily a steady-state model. If the biomass for a group is known, e.g., at the beginning of the year and at the beginning of the next year, the biomass accumulation (''BA'') can be calculated as the difference between these biomasses. ''BA'' is a production term that can be entered for all living groups (default is 0), but is calculated for detritus groups ([wiki:EwEugDetritusFate Detritus fate]). ''BA'' is a flow term, with a rate unit of, e.g., t / km² / year. The default value for ''BA'' is zero indicating no biomass accumulation. A negative value signifies biomass depletion (biomass decreased during period modelled). |
