Biological assessment 1 Biological indices 1 Bulk samples 1 Community composition 1 DNA 1 Invertebrata 1 Level 2 1 Macroinvertebrate 1 Macroinvertebrates 1 Metabarcoding 1 Molecular data 1 Number-average 1 Stream invertebrates Surveys 1 Taxonomies 1 Water 1 assessment method 1 community composition 1 correlation 1 diversity index 1 freshwater ecosystem 1 genetic analysis 1 macroinvertebrate 1 morphology 1 performance assessment 1 species richness 1 taxonomy 1