Difference between revisions of "BQE"

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Revision as of 17:14, 13 April 2010

Biological Quality Elements (BQE)

General description

For the implementation of the Water Framework Directive, the assessment of ecological status of water bodies is based on biological indicators from several groups of organisms known as biological quality elements (BQE). For inland surface waters the BQE's are:

Iwrm-hau gauche.gif Delft-Cluster-logo.jpg Iwrm-hau gauche.gif Delft-Cluster-logo.jpg
Phytoplankton Macrophytes and phytobenthos
Benthic invertebrates || Fish
Iwrm-hau gauche.gif Iwrm-hau gauche.gif Iwrm-hau gauche.gif Iwrm-hau gauche.gif
R4 Permanent slow-flowing headwater on sandy soil <1 <50



The indicators may be related to the composition, abundance and diversity of species, as well as the presence or absence of some disturbance-sensitive species.