Effects of sedimentation on incubating coho salmon, (Oncorhynchus kisutch) in Prairie Creek, California
Coey RM. 1998. Effects of sedimentation on incubating coho salmon, (Oncorhynchus kisutch) in Prairie Creek, California. Humboldt State University
A Master of Science thesis from Humboldt State University, California. From the Abstract: "In this study, processes within the actual physical environment surrounding incubating coho salmon embryos were monitored and measurements of environmental factors related to survival were taken. Artificial redds with eyed coho salmon eggs were constructed on treatment and control reaches of Prairie and Lost Man Creeks, California and monitored for incubation survival (hatching and emergence stages), percent fines infiltrating the gravel, and water inflow and dissolved oxygen rates in the winters of 1990 and 1991. Natural redds were also trapped and monitored then compared to artificial redd experiments. Results indirectly related decreased survival to decreased gravel permeability and predatory oligochaete worm infestation. Results were consistent with the literature; survival varies linearly and inversely with fine sediment in stream gravel and that 'fish effects' can be significant. Other variables ineffectively controlled (site geometric mean particle size, stream gradient and flow) confounded relationships between survival and physical variables measured." Appendices include tabular data from hatching and emergent baskets, and dissolved oxygen and temperature data.
- Type
- Academic
- Authors
- Coey, Robert
- Date of Issue
- 1998-05
- Publisher
- Humboldt State University
- Units
- REDW
- Keywords
- Coho Salmon, Dissolved Oxygen, emergence, Fish Studies, Impacts, Lost Man Creek, Monitoring, Oncorhynchus kisutch, Prairie Creek, Reproduction, Sediment, Survival, Thesis, Threatened Species, Water Temperature