Skip to main content

Advertisement

Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Table 3 Summary of residence time data for emigrating yearling Chinook salmon, steelhead, and subyearling Chinook salmon by season

From: Juvenile salmonid migratory behavior at the mouth of the Columbia River and within the plume

Species/stock Season N Residence time (days)
Mean SD Minimum Maximum Median
CH1 Early 247 0.7 1.4 0.1 12.3 0.4
  Late 338 3.3 5.4 0.1 34.7 0.6
  Total 585 2.2 4.4 0.1 34.7 0.5
STH Early 63 0.3 0.2 0.1 1.1 0.2
  Late 119 0.8 1.4 0.1 10.8 0.3
  Total 182 0.6 1.2 0.1 10.8 0.2
CH0 Total 811 3.6 5.7 0.1 28.4 1.2
All species   1,578 2.8 5.0 0.1 34.7 0.7
  1. Early season detections include 5 to 18 May 2010 and late season detections include 19 May to 6 July 2010 for yearling Chinook salmon and steelhead. Residence time was calculated from the last detection at the mouth of the Columbia River (rkm 8.3. 4.5, and 2.8) to the last detection on the plume array. CH1, yearling Chinook salmon; STH, steelhead; CH0, subyearling Chinook salmon.