Figure 2.2. Trends in salmonid escapement for representative taxa in the Klamath River. In the upper graph, black stars represent time series data, black lines represent linear trendline (from permutations), dotted lines represent trend output, and broken lines represent intercept parameters. In the lower graphs, black bars represent posterior probabilites of step changes, gray bars represent posterior probabilites of trend changes, and the lines represent the odds ratio significant to each time series. Ch = Chinook, Sp Chinook = spring Chinook, l fall Ch = late fall Chinook, sthd = steelhead, s sthd = summer steelhead. Figure 2. 3. Percent of basinwide fall Chinook escapement comprised of natural escapement and hatchery returns, Klamath River, California, 1978-2009. Cross correlations Several natural escapement time series were significantly correlated to hatchery returns (Table 2.3). Basinwide fall Chinook adult spawner abundance was significantly correlated to returns to both hatcheries (r(27) =0.53, p = <0.05). Fall Chinook natural escapement to Bogus Creek was significantly correlated to returns to both IGH (r(27) = 0.60, p = <0.05) and TRH (r(27) = 0.58, p = <0.05). Fall Chinook natural escapement to Salmon River was significantly correlated to returns to IGH (r(27) = 0.36, p = <0.05). Fall Chinook natural escapement to Trinity River was significantly correlated to returns to both IGH (r(27) = 0.41, p = <0.05) and TRH (r(27) = 0.72, p = <0.05). Spring Chinook natural escapement to the Salmon River was significantly
Figure 2.2. Trends in salmonid escapement for representative taxa in the Klamath River. In the upper graph, black stars represent time series data, black lines represent linear trendline (from permutations), dotted lines represent trend output, and broken lines represent intercept parameters. In the lower graphs, black bars represent posterior probabilites of step changes, gray bars represent posterior probabilites of trend changes, and the lines represent the odds ratio significant to each time series. Ch = Chinook, Sp Chinook = spring Chinook, l fall Ch = late fall Chinook, sthd = steelhead, s sthd = summer steelhead. Figure 2. 3. Percent of basinwide fall Chinook escapement comprised of natural escapement and hatchery returns, Klamath River, California, 1978-2009. Cross correlations Several natural escapement time series were significantly correlated to hatchery returns (Table 2.3). Basinwide fall Chinook adult spawner abundance was significantly correlated to returns to both hatcheries (r(27) =0.53, p = <0.05). Fall Chinook natural escapement to Bogus Creek was significantly correlated to returns to both IGH (r(27) = 0.60, p = <0.05) and TRH (r(27) = 0.58, p = <0.05). Fall Chinook natural escapement to Salmon River was significantly correlated to returns to IGH (r(27) = 0.36, p = <0.05). Fall Chinook natural escapement to Trinity River was significantly correlated to returns to both IGH (r(27) = 0.41, p = <0.05) and TRH (r(27) = 0.72, p = <0.05). Spring Chinook natural escapement to the Salmon River was significantly
Quinones_Recovery_of_Pacific_Salmonids.docx