Biological intercalibration: Invertebrates 2022

Abstract

The ICP Waters biological intercalibration of invertebrates was executed to harmonise taxonomic work across countries and is of high value in programmes where the focus is on community analyses, e.g., for the classification of ecological status according to the EU Water Framework Directive. The 26th biological intercalibration of invertebrates in ICP Waters included two participants. A total 95 % of the species and 99 % of the genera were correctly identified in 2022. The mean Quality assurance index (Qi) ranged from 80.7 to 97.5 The results show that the average Qi has remained above 80% since 1992, suggesting skilled taxonomists in the laboratories affiliated to ICP Waters.