Criteria are for genus-level identification of most insects and chironomids to family. Square braces indicate the value next to the brace is included in the range; rounded parentheses indicate the value is not included.
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Scoring Criteria |
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Metric |
1 |
3 |
5 |
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Taxa richness and composition |
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Total number of taxa |
[0, 14) |
[14, 28] |
> 28 |
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Number of Ephemeroptera (mayfly) taxa |
[0, 3.5) |
[3.5, 7] |
> 7 |
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Number of Plecoptera (stonefly) taxa |
[0, 2.7) |
[2.7, 5.3] |
> 5.3 |
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Number of Trichoptera (caddisfly) taxa |
[0, 2.7) |
[2.7, 5.3] |
>5.3 |
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Number of long-lived taxa |
[0, 4) |
[4, 8] |
> 8 |
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Tolerance |
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Number of intolerant taxa |
[0, 2) |
[2, 4] |
> 4 |
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% of individuals in tolerant taxa |
> 44 |
[27, 44] |
< 27 |
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Feeding ecology |
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% of predator individuals |
[0, 4.5) |
[4.5, 9] |
> 9 |
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Number of clinger taxa |
[0, 8) |
[8, 16] |
> 16 |
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Population attributes |
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% dominance (top 3 taxa) |
> 75 |
[55, 75) |
[0, 55) |