Table 8 Candidate parameters for B-IBI and their response to anthropogenic disturbance.
Parameter attribute | Serial number | Biological parameter | Parameter description | Response to disturbance | References |
|---|---|---|---|---|---|
Species composition and abundance | M1 | Total taxa | Total taxon number of the benthic fauna in the sample | Decrease | Barbour et al.23 |
M2 | EPT taxa | Number of the ephemerida + trichoptera + Plecoptera taxa in the sample | Decrease | Barbour et al.23 | |
M3 | Crustacean + Mollusca taxa | Number of the crustacean + mollusca taxa in the sample | Decrease | Qu et al.24 | |
M4 | Ephemerida taxa | Number of the ephemerida taxa in the sample | Decrease | Barbour et al.23 | |
M5 | Pteroptera taxa | Number of the pteroptera taxa in the sample | Decrease | Qu et al.24 | |
M6 | Trichoptera taxa | Number of the trichoptera taxa in the sample | Decrease | Barbour et al.23 | |
M7 | Diptera taxa | Number of the diptera taxa in the sample | Decrease | Barbour et al.23 | |
M8 | Chironomidea taxa | Number of the chironomidea taxa in the sample | Decrease | Barbour et al.23 | |
M9 | EPT (%) | Number of the EPT individuals/the total number of individuals in the sample | Decrease | Barbour et al.23 | |
M10 | Crustacean + Mollusca (%) | Number of the crustacean and mollusca individuals/the total number of individuals in the sample | Decrease | Qu et al.24 | |
M11 | Ephemerida (%) | Number of the ephemerida individuals/the total number of individuals in the sample | Decrease | Barbour et al.23 | |
M12 | Pteroptera (%) | Number of the pteroptera individuals/the total number of individuals in the sample | Decrease | Qu et al.24 | |
M13 | Trichoptera (%) | Number of the trichoptera individuals/the total number of individuals in the sample | Decrease | Barbour et al.23 | |
M14 | Diptera (%) | Number of the diptera individuals/the total number of individuals in the sample | Increase | Barbour et al.23 | |
M15 | Chironomidea (%) | Number of the chironomidea individuals/the total number of individuals in the sample | Increase | Barbour et al.23 | |
M16 | Oligochaeta (%) | Number of the oligochaeta individuals/the total number of individuals in the sample | Increase | Barbour et al.23 | |
M17 | Shannon–Weiner diversity index | \(\left| {\text{r}} \right|\) where H is an diversity index, n is the total number of individuals, S is the number of taxa, and ni is the number of the individuals of the ith taxon | Decrease | Qu et al.24 | |
Sensitivity and tolerance | M18 | Intolerant taxa (PTV ≤ 3) | Number of the taxa with a tolerance value ≤ 3 | Decrease | Barbour et al.23 |
M19 | Tolerant taxa (PTV ≥ 7) | Number of the taxa with a tolerance value ≥ 7 | Increase | Barbour et al.23 | |
M20 | Dominant species (%) | Individual number of the most dominant species/the total number of individuals in the sample | Increase | Barbour et al.23 | |
M21 | Top three dominant species (%) | Individual number of the top three dominant species/the total number of individuals in the sample | Increase | Qu et al.24 | |
Functional feeding | M22 | Shredders (%) | Number of the shredder individuals/the total number of individuals in the sample | Decrease | Qu et al.24 |
M23 | Herbivores (%) | Number of the herbivore individuals/the total number of individuals in the sample | Increase | Qu et al.24 | |
M24 | Filterers (%) | Number of the filterer individuals/the total number of individuals in the sample | Increase | Qu et al.24 | |
M25 | Scrapers (%) | Number of the scraper individuals/the total number of individuals in the sample | Decrease | Qu et al.24 | |
M26 | Predators (%) | Number of the predator individuals/the total number of individuals in the sample | Decrease | Qu et al.24 |
