Skip to Main Content
Effects of fine sediment on fish populationsAuthor(s): Russ Thurow; Jack King
Source: In: Fan, Shou-Shan; Kuo, Yung-Huang, eds. Proceedings of the Fifth Federal Interagency Sedimentation Conference, Vol. 2; March 18-21, 1991; Las Vegas, NV. Interagency Advisory Committee on Water Data, Subcommittee on Sedimentation. p. 11-49-11-56.
Publication Series: Paper (invited, offered, keynote)
Station: Rocky Mountain Research Station
PDF: View PDF (1.38 MB)
DescriptionTo describe conditions in natural redds of steelhead trout (Oncorhynchus mykiss), we evaluated the particle size distribution of egg pockets, redd pits and tailspills, artificially constructed redds, and undisturbed substrate outside redds. Egg pockets were located in upper strata an average of 14.9 cm below the substrate surface. Egg pockets contained fewer fines (<6.35 mm) than other sites, except in artificial redds. As substrate depth increased, percent fines tended to increase at all sampling sites and variability in percent fines among sites was reduced. We observed no change in percent fines sampled from May to July, except in cleaned intrusion sites where free interstitial areas rapidly accumulated sediments. Dissolved oxygen levels declined in redds during incubation. Limitations of the data are discussed.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationThurow, Russ; King, Jack. 1991. Effects of fine sediment on fish populations. In: Fan, Shou-Shan; Kuo, Yung-Huang, eds. Proceedings of the Fifth Federal Interagency Sedimentation Conference, Vol. 2; March 18-21, 1991; Las Vegas, NV. Interagency Advisory Committee on Water Data, Subcommittee on Sedimentation. p. 11-49-11-56.
Keywordssediment, natural redds, steelhead trout, Oncorhynchus mykiss
- Spatial variation in spawning habitat of cutthroat trout in a sediment-rich basin
- Comparison of the yields of downstream migrant salmonids before and after logging and road construction on the South Fork Caspar Creek, Mendocino County
- Spatial ecological processes and local factors predict the distribution and abundance of spawning by steelhead (Oncorhynchus mykiss) across a complex riverscape
XML: View XML