Table 2.
Collection and life history information on Chinook salmon from which otoliths analyzed in this study were collected including date of fish collection, back calculated (from otolith) year of hatch, fish fork length at time of collection, age at time of collection, sex, and number of years the fish lived in freshwater or ocean habitats as determined by otolith strontium concentrations.
| Fish ID | Collection date | Hatch date | Fork length (cm) | Age | Sex | Yrs freshwater | Yrs ocean |
|---|---|---|---|---|---|---|---|
| 1037 | 10/27/2015 | 2013 | 75 | 2 | F | 0 | 2 |
| 1084 | 10/27/2015 | 2012 | 92 | 3 | F | 0 | 3 |
| 2082 | 11/03/2015 | 2012 | 87 | 3 | F | 0 | 3 |
| 2087 | 11/03/2015 | 2011 | 89 | 4 | F | 0 | 4 |
| 4213 | 11/17/2015 | 2011 | 87 | 4 | F | 0 | 4 |
| 4452 | 2012 | 2009 | 73 | 2 | M | NA | NA |
| 5244 | 11/09/2015 | 2012 | 83 | 3 | M | 1 | 2 |
| 5294 | 11/17/2015 | 2011 | 84 | 4 | M | 0 | 4 |
All fish collected for this study were presumed to be of wild origin due to absence of hatchery-implanted coded wire tags (but see “Fish collection” in “Methods”).