Benthic Metric Response to Impairment
Taxonomic Richness Decrease
% Dominant Taxon Increase
Emphemeroptera Taxa Decrease
EPT Taxa Decrease
EPT Index (%) Decrease
Shannon Diversity Decrease
Tolerance Value Increase
% Tolerant Taxa Increase
% Collectors/Filterers Increase
% Collectors/Gatherers Increase
% Grazers Variable
% Predators Variable
% Shredders Decrease
Abundance Decrease
Table 11: Expected response of the various benthic metrics.