DS DS/EN ISO 8689-1
DS DSEN SO 8689-1 2000-OCT-03 Water qualty - Bologcal classfcaton of rvers - Part 1 Gudance on the nterpretaton of bologcal qualty data from surveys of benthc macronvertebrates
DS DSEN SO 8689-1 2000-OCT-03 Water qualty - Bologcal classfcaton of rvers - Part 1 Gudance on the nterpretaton of bologcal qualty data from surveys of benthc macronvertebrates
This part of the standard 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 waters using benthic macroinvertebrates already exist