Seasonal species composition of invertebrates in several Oregon streams.

Pamela E. Porter; William R. Meehan

doi:10.2737/PNW-RP-382

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Seasonal species composition of invertebrates in several Oregon streams.

Informally Refereed

Authors:

Pamela E. Porter, William R. Meehan

Year:

1987

Type:

Research Paper

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RP-382

Source:

Res. Pap. PNW-RP-382. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 36 p

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Download (PDF 1.83 MB): https://research.fs.usda.gov/download/treesearch/9218.pdf

Abstract

The invertebrate communities ofeight Oregon streams were sampled seasonally from 1974 to 1976. Benthic, drift, and two types of aerial-trap samples were collected. Occurrence and percentage composition are summarized by sample type, season, and geographic area (coastal, Cascade, central, and eastern Oregon). Within 276 families, 426 taxa were identified; the 20 families most prevalent within each sample type accounted for the majority of organisms collected (77.8-91.8 percent). In most areas and seasons, Diptera and Ephemeroptera together comprised over half of the invertebrates collected.

Keywords

Invertebrata, aquatic life, Oregon

Citation

Porter, Pamela E.; Meehan, William R. 1987. Seasonal species composition of invertebrates in several Oregon streams. Res. Pap. PNW-RP-382. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 36 p