California Coastal Salmonid Monitoring Program Annual Report: Results of regional spawning ground surveys and estimates of total salmonid redd construction in Redwood Creek, Humboldt County California, 2011
Ricker S, Lindke K, Reneski M, Anderson C. 2014. California Coastal Salmonid Monitoring Program Annual Report: Results of regional spawning ground surveys and estimates of total salmonid redd construction in Redwood Creek, Humboldt County California, 2011
Abstract: "A total of 116 salmonid spawning ground surveys were conducted in 21 randomly sampled stream reaches throughout the Redwood Creek basin between 11/02/2011 and 03/20/2012. An additional 49 surveys were conducted in the 7 reaches of Prairie Creek in order to complete surveys in all of the reaches within the Life Cycle Monitoring sub-basin. Individual stream reaches were surveyed an average of 6 times over the study period with an average return interval of 20 days between surveys. Field staff observed 180 coho salmon, 469 Chinook salmon, 28 steelhead trout and 87 unidentified live sh over the survey period. A total of, 38 coho salmon, 32 Chinook salmon and 1 unknown individual salmonid carcasses were found. Field surveyors were able to assign species to 129 of the total 697 redds observed. After all unidentified redds were predicted to species likely to have built them, we estimated the total number of redds constructed across all reaches in the sample frame, expanded from the randomly sampled reaches to be 837 Chinook salmon, 501 coho, and 48 steelhead. The spawning ground survey period did not encompass the entirety of the spawning period for steelhead, and therefor the estimates presented should be considered only for the length of the study. We estimated a total of 379 coho salmon, 105 Chinook salmon, 11 and steelhead redds for all reaches within the Prairie Creek Life Cycle Monitoring sub basin."
- Type
- Published Report
- Authors
- Ricker, Seth; Lindke, Ken; Reneski, Melissa; Anderson, Colin
- Date of Issue
- 2014-03-13
- Units
- REDW
- Keywords
- Chinook salmon, fish studies, life cycle, monitoring, Prairie Creek, Redwood creek basin, Salmonid Species, stream survey