| calculate_ASPT |
The Average Score Per Taxon (ASPT) represents the average tolerance score of all taxa within the community, and is calculated by dividing the BMWP by the number of families/taxa represented in the sample. |
| calculate_BMWP |
The Biological Monitoring Working Party score (BMWP) This index provides single values, at the family level (with exception of Oligochaete which is to the order level), representative of the organisms<e2><80><99> tolerance to pollution. |
| calculate_EPT |
This index is calculated based on the number of families belonging to three macroinvertebrate orders: Ephemeroptera, Plecoptera and Trichoptera. |
| calculate_FBI |
Assigned tolerancevalues range from 0 to 10 for families and increase as water quality decreases |
| calculate_SWRC |
SWRC - Biotic index (Stroud Water Research Centre - Biotic index) |
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