DS DS/EN ISO 8689-2
DS DSEN SO 8689-2 2000-OCT-03 Water qualty - Bologcal classfcaton of rvers - Part 2 Gudance on the presentaton of bologcal qualty data from surveys of benthc macronvertebrates
DS DSEN SO 8689-2 2000-OCT-03 Water qualty - Bologcal classfcaton of rvers - Part 2 Gudance on the presentaton of bologcal qualty data from surveys of benthc macronvertebrates
This standard gives guidance on the presentation of biological quality data relating to running waters from surveys of benthic macroinvertebrates. The guidance is applicable to the results of surveys using standard methods of sampling and using the classification procedures given in ISO 8689-1. It is recognized that for a complete assessment of ecological status other elements of biological quality should be assessed. NOTE: An explanation of the comparison of different indicies used in the analysis of surveys of benthic macroinvertebrates is given in ISO 8689-1.