Water quality. Biological classification of rivers - Guidance on the interpretation of biological quality data from surveys of benthic macroinvertebrates Ingestion-build-59651 Background to the decisions made

Background to the decisions made in the National Annex to BS EN 1992-2 for some of the Nationally Determined Parameters

channels and T-sections for the same section factor

Software designers

which are closely linked to performance

12 Operation of I&HAS

Water quality. Biological classification of rivers - Guidance on the interpretation of biological quality data from surveys of benthic macroinvertebrates Ingestion-build-59651 Background to the decisions made1 Scope This part of ISO 8689 gives guidance on the interpretation of biological quality data relating to running waters from surveys of benthic macroinvertebrates. It is recognized that for a complete assessment of ecological status, other elements of biological quality should be assessed. NOTE Annex A gives guidance on how the comparison of the various classification systems can be made where classifications of the biological quality of running