Scientific Investigations Report 2006–5101–D
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5101–D
Table 10. Number of benthic macroinvertebrate taxa and maximum abundance per insect order or noninsect group, Willamette River basin and surrounding area, Oregon and Washington.
[Abbreviation: m2, square meter]
| Insect order/ noninsect group |
Number of unique taxa |
Most abundant taxon |
Maximum abundance (m2) |
|---|---|---|---|
| Insects | |||
| Ephemeroptera | 13 | Baetis tricaudatus | 3,082 |
| Plecoptera | 10 | Zapada cinctipes | 4,081 |
| Trichoptera | 19 | Cheumatopsyche sp. | 3,467 |
| Diptera | 52 | Simulium canadense | 12,306 |
| Chironomidae1 | 37 | Cricotopus bicinctus group | 3,303 |
| Coleoptera | 12 | Optioservus sp. | 1,349 |
| Lepidoptera | 1 | Lepidoptera | 64 |
| Megaloptera | 1 | Sialis sp. | 40 |
| Odonata | 2 | Gomphidae | 113 |
| Total insects | 110 | ||
| Noninsects | |||
| Amphipoda | 3 | Hyalella azteca | 1,401 |
| Oligochaeta | 5 | Tubificidae | 2,129 |
| Mollusca | 10 | Fluminicola sp. | 11,419 |
| Other non-insects | 11 | Acari | 988 |
| Total noninsects | 29 | ||
| Total number of taxa | 139 | ||
1The Chironomidae value is included in the Order Diptera and is not added for total insects.
U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/sir/2006/5101-D
Page Contact Information: Publications Team
Page Last Modified: Thursday, 01-Dec-2016 19:24:36 EST
