Scale and DPSIR
Scale of water body and model
Zone A scale - local to a point source discharge
Zone B scale - the scale of a water body in which water residence time is a few days, receiving one or more point source or diffuse inputs of waste
Zone C scale - the region, in which water residence times are measured in months and where the relevant maricultural concerns include the overall size of the industry
Ib - Individual Based model, such as one that deals with growth | ![]() |
DPSIR - Driving Pressure State Impact Response
![]() | The DPSIR framework allows the classification of indicators according to their use:
Driving forces, the environmental Pressure, the State of the environment, the Impact on the environment, and the Response from the environment. According to this perspective, the wastes and by-products of fin-fish farming, or the depletion of phytoplankton by shellfish farms, constitute an (ecological) pressure on ecosystems, which may change in state as a result. Some of these changes are the environmental impact of mariculture, which should be managed so as to keep these impacts with acceptable limits. |



