USGS Open-File Report 02-012
Physical Data and Biological Data for Algae, Aquatic Invertebrates, and Fish from Selected Reaches on the Carson and Truckee Rivers, Nevada and California, 1993-97
Table 27. Number of aquatic invertebrates per square meter in the richest-targeted habitat at sites on the Truckee River, September 1993. Richest-targeted habitat for all sites were cobble riffles except site 11 (fig. 1) which was submerged woody snags.
[Abbreviation: sp., species]
| Taxon | Site 11, Sept. 8 |
Site 12 | Site 15, Sept. 3 |
Site 17 | Site 19 Sept. 16 |
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|---|---|---|---|---|---|---|---|---|---|
| Reach A, Sept. 9 |
Reach B, Sept. 9 |
Reach C, Sept. 10 |
Reach A, Sept. 21 |
Reach B, Sept. 7 |
Reach C, Sept. 21 |
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| PLATYHELMINTHES | |||||||||
| Turbellaria | 990 | 900 | 610 | 230 | |||||
| NEMATODA | 3 | ||||||||
| ANNELIDA | |||||||||
| Clitellita -- Oligochaeta | 490 | 450 | 310 | 550 | 110 | 440 | 15 | 110 | |
| MOLLUSCA | |||||||||
| Bivalvia | 4 | 1 | 220 | ||||||
| ARTHROPODA -- Chelicerata | |||||||||
| Hydrachna sp. | 180 | 84 | 0 | 3 | 440 | 330 | 330 | ||
| ARTHROPODA -- Crustacea | |||||||||
| Decapoda | |||||||||
| Astacidae | |||||||||
| Pacifastacus leniusculus Dana | 1 | 1 | 1 | ||||||
| ARTHROPIDA -- Hexapoda -- Insecta | |||||||||
| Coleoptera | |||||||||
| Elmidae | |||||||||
| Zaitzevia parvula (Horn) | 1 | 2 | 1 | 110 | 56 | 6 | 110 | 7 | |
| Diptera | |||||||||
| Chironomidae | 900 | 420 | 730 | 1,100 | 940 | 2,600 | 2,900 | 1,400 | 1,900 |
| Empididae | 23 | ||||||||
| Psychodidae | 1 | ||||||||
| Simuliidae | 45 | 140 | 1,200 | 140 | 1,700 | 110 | |||
| Tipulidae | |||||||||
| Antocha sp. | 55 | ||||||||
| Ephemeroptera | 84 | 55 | |||||||
| Baetidae | 310 | 1,500 | 1,400 | 1,700 | 440 | 9,200 | 12,000 | 8,600 | 6,500 |
| Ephemerellidae | |||||||||
| Drunella sp. | 230 | 140 | 65 | 170 | |||||
| Serratella sp. | 1 | ||||||||
| Timpanoga hecuba (Eaton) | 1 | ||||||||
| Leptophlebiidae | 55 | 55 | 1 | 14 | |||||
| Ameletus sp. | 1 | ||||||||
| Choroterpes sp. | 110 | ||||||||
| Paraleptophlebia sp. | 1 | ||||||||
| Leptohyphidae | 1,300 | 1,300 | |||||||
| Tricorythodes minutus Traver | 60 | 220 | 170 | 28 | 2,200 | 440 | |||
| Heteroptera | 5 | 1 | |||||||
| Corixidae | 55 | ||||||||
| Gerridae | 1 | ||||||||
| Lepidoptera | |||||||||
| Pyralidae | |||||||||
| Petrophila sp. | 110 | ||||||||
| Plecoptera | 55 | ||||||||
| Peltoperlidae | 55 | ||||||||
| Perlidae | 55 | ||||||||
| Hesperoperla pacifica (Banks) | 1 | ||||||||
| Perlodidae | 3 | 55 | 1 | 1 | |||||
| Skwala sp. | 130 | 19 | 13 | 1,000 | 2 | 3 | 5 | ||
| Trichoptera | |||||||||
| Glossosomatidae | |||||||||
| Glossosoma oregonense Ling | 3 | 1 | |||||||
| Glossosoma sp. | 72 | 66 | 470 | ||||||
| Hydropsychidae | 110 | 670 | 780 | 1,300 | 440 | 5,300 | 5,200 | 3,300 | 1,700 |
| Ceratopsyche cockerelli (Banks) | 29 | 2 | 3 | ||||||
| Hydropsyche sp. | 2 | 1 | 11 | 15 | |||||
| Hydropsyche californica Banks | 240 | ||||||||
| Hydropsyche sp. nr. californica Banks | 2 | ||||||||
| Hydroptilidae | 1 | 110 | 220 | ||||||
| Hydroptila sp. | 20 | 55 | |||||||
| Hydroptila arctia Ross | 17 | ||||||||
| Leucotrichia sp. | 3 | ||||||||
| Ochrotrichia sp. | 1 | ||||||||
| Lepidostomatidae | |||||||||
| Lepidostoma sp. | 1 | 120 | |||||||
| Leptoceridae | 2 | 1 | 7 | 17 | |||||
| Nectopsyche sp. | 28 | ||||||||
| Limnephilidae | |||||||||
| Psychoglypha sp. | 1 | ||||||||
| Philopotamidae | |||||||||
| Wormaldia sp. | 2 | ||||||||
| Rhyacophilidae | |||||||||
| Rhyacophila sp. | 4 | 120 | 4 | ||||||
| Odonata-Anisoptera | |||||||||
| Gomphidae | 110 | ||||||||
| Erpetogomphus sp. | 1 | ||||||||
| Odonata-Zygoptera | |||||||||
| Coenagrionidae | 1 | ||||||||