BOARD00568

• Board Meeting Date: 1/27/2004
• Description: ISF Section - Instream Flow Appropriations - Thirtyone Mile Creek
• Board Meetings - Doc Type: Memo

Relative contribution of taxon collected 06/10/94 in 1 riffle sample at station
31-MILE-l, 31 Mile Creek, Colorado. Abundance data is nurnber/m2 for quantitative
samples and number per sample for qualitative samples. ***.* = <0.1%.

Cumulative
~ Abundance Percent Percent
orthocladiinae 559 33.9 33.9
Optioservus 425 25.8 59.7
Glossosoma 253 15.4 75.1
Tubif ia idae 191 11.6 86.7
Chironomidae 72 4.3 91.0
Five dominant taxa
Heptageniidae 33 2.0 93.0
Isoperla 33 2.0 95.1
Malenka 14 0.9 95.9
Caloparyphus 14 0.9 96.8
Hy<1ropt;ila 10 0.6 97.4
Ten dominant taxa
Heliahus 10 0.6 98.0
Ceratopogonidae 5 0.3 98.3
Bast.is 5 0.3 98.6
Dixa 5 0.3 98.8
Hydracarina 5 0.3 99.1
Physella 5 0.3 99.4
Curculionidae 5 0.3 99.7
Zaitzevia 5 0.3 100.0
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Total: 18 taxa 1649 100.0