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Welcome to the website of the Benthos Ecosystem Quality Index (BEQI). BEQI is a biological index that will be used assessing the state of the benthos of coastal and transitional waters for the Water Framework Directive.

For more info on the BEQI index check the background information. To calculate the BEQI on your own dataset, check the calculation module.

BEQI was developed at the Netherlands Institute of Ecology (NIOO). Developments were supported by the Directorate-General for Public Works and Water Management (NL) and the Federal Public Service Health, Food Chain Safety and Environment (BE).