Indexes of WFD assessments of metropolitan coastal waters during the period 2005-2010

Under the EU Water Framework Directive (2000/60/EC), among the biological parameters involved in the assessment of coastal water bodies, the quality element "phytoplankton" is defined. This indicator Phytoplankton is made up of several indexes including a biomass index and an abundance index. Oxygen balance appearing among the elements of physicochemical quality selected for the classification of the ecological state of coastal water bodies. The quality element "benthic invertebrates" is also part of the biological parameters involved in the assessment of these water bodies.