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 24. Number of aquatic invertebrates per square meter in the richest-targeted habitat at sites on the Carson River, August to September 1993. Habitats sampled were cobble riffles for sites 1 and 7 and submerged woody snags for site 9 (fig. 1).
[Abbreviation: sp., species]
| Taxon | Site 1 | Site 7, Sept. 7 |
Site 9 | ||||
|---|---|---|---|---|---|---|---|
| Reach A, Sept. 2 |
Reach B, Sept. 1 |
Reach C, Aug. 30 |
Reach A, Sept. 13 |
Reach B, Sept. 13 |
Reach C, Sept. 20 |
||
| PLATYHELMINTHES | |||||||
| Turbellaria | 240 | 7 | |||||
| NEMATODA | 11 | 1 | |||||
| ANNELIDA | |||||||
| Clitellita -- Oligochaeta | 180 | 150 | 70 | 110 | 60 | 2 | |
| MOLLUSCA | |||||||
| Bivalvia | 1 | 2 | |||||
| ARTHROPODA -- Chelicerata | |||||||
| Hydrachna sp. | 160 | 60 | 260 | ||||
| ARTHROPODA -- Crustacea | |||||||
| Astacidae | 1 | 1 | |||||
| Pacifastacus leniusculus Dana | 1 | ||||||
| ARTHROPODA -- Hexapoda-Insecta | |||||||
| Coleoptera | |||||||
| Curculionidae | 1 | ||||||
| Elmidae | 3 | ||||||
| Optioservus sp. | 90 | 10 | 50 | 20 | |||
| Zaitzevia parvula (Horn) | 180 | 130 | 120 | 20 | 70 | ||
| Hydrophilidae | 30 | ||||||
| Enochrus sp. | 1 | ||||||
| Tropisternus sp. | 2 | ||||||
| Diptera | 8 | ||||||
| Ceratopogonidae | 7 | ||||||
| Chironomidae | 3,100 | 960 | 1,500 | 1,000 | 1,200 | 450 | 4,600 |
| Empididae | 20 | ||||||
| Simuliidae | 830 | 90 | 210 | 390 | 90 | 330 | |
| Stratiomyidae | 20 | ||||||
| Tipulidae | |||||||
| Dicranota sp. | 20 | ||||||
| Hexatoma sp. | 11 | 1 | 3 | ||||
| Ephemeroptera | 3 | 50 | 1 | ||||
| Baetidae | 1,800 | 1,100 | 1,600 | 360 | 180 | 480 | 2,500 |
| Ephemerellidae | |||||||
| Serratella tibialis (McDunnough) | 1 | ||||||
| Serratella sp. | 90 | ||||||
| Heptageniidae | 740 | 500 | 120 | 11 | 7 | ||
| Cinygma sp. | 2 | ||||||
| Heptagenia sp. | 30 | 3 | |||||
| Heptagenia sp. | 8 | ||||||
| Leptohyphidae | |||||||
| Tricorythodes minutus Traver | 12 | 1 | 350 | 20 | 40 | 200 | |
| Heteroptera | 1 | ||||||
| Plecoptera | |||||||
| Perlidae | 90 | 1 | 80 | ||||
| Claassenia sabulosa (Banks) | 1 | 1 | |||||
| Perlodidae | 80 | ||||||
| Skwala sp. | 120 | 80 | 130 | 1 | |||
| Trichoptera | |||||||
| Glossosomatidae | |||||||
| Glossosoma sp. | 1 | 2 | |||||
| Glossosoma oregonense Ling | 1 | ||||||
| Hydropsychidae | 3,300 | 740 | 1,200 | 900 | 40 | 1,300 | |
| Ceratopsyche cockerelli (Banks) | 280 | 10 | |||||
| Cheumatopsyche campyla Ross | 1 | ||||||
| Cheumatopsyche sp. | 1 | 10 | |||||
| Hydropsyche sp. | 370 | 50 | |||||
| Hydropsyche californica Banks | 50 | ||||||
| Hydropsyche sp. nr. californica Banks | 10 | 3 | 2 | ||||
| Hydroptilidae | 110 | 11 | |||||
| Hydroptila sp. | 7 | 4 | |||||
| Ochrotrichia sp. | 20 | 70 | |||||
| Lepidostomatidae | |||||||
| Lepidostoma sp. | 6 | 4 | 4 | ||||
| Leptoceridae | 3 | ||||||
| Nectopsyche sp. | 230 | 50 | 70 | ||||
| Odonata-Anisoptera | |||||||
| Gomphidae | 7 | ||||||
| Erpetogomphus sp. | 4 | 1 | |||||
| Odonata-Zygoptera | 3 | ||||||
| Coenagrionidae | |||||||
| Argia sp. | 6 | 3 | |||||