Chinook Temperature and Prespawn
mbayly
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Species Common Name
Chinook Salmon
Latin Name (Genus species)
Oncorhynchus
species (latin)
tshawytscha
Stressor Name
Stream Temperature
Specific Stressor Metric
Mean August Stream Temperature
Stressor Units
°C
Vital Rate (Process)
Pre-spawn Survivorship
Geography
Interior Columbia River Basin
Detailed SR Function Description
Predicted pre-spawn mortality. Composite curve across populations in the Interior Columbia River Basin. Model parameters included Day (of year), Fish Length, Origin (hatchery or wild) and Mean August Stream Temperature. Figure shows partial plot for stream temperature after accounting for other covariates.
Mortality rates from monitoring data (5 - 14 years across 49 stream reaches). Survey methods differed between programs, but authors used data filtering criteria.
This stressor response curve shows data for Natural Origin Chinook (excluded hatchery origin) and a mean value between the 5th and 95th percentile of fish length (generalized curve).
Mortality rates from monitoring data (5 - 14 years across 49 stream reaches). Survey methods differed between programs, but authors used data filtering criteria.
This stressor response curve shows data for Natural Origin Chinook (excluded hatchery origin) and a mean value between the 5th and 95th percentile of fish length (generalized curve).
Function Type
continuous
Stressor Scale
linear
Citation(s)
Bowerman, T. E., Keefer, M. L., & Caudill, C. C. (2021). Elevated stream temperature, origin, and individual size influence Chinook salmon prespawn mortality across the Columbia River Basin. Fisheries Research, 237, 105874.
Citation Link
Stressor Response csv data
sr_curve (3)_0.csv
(319 bytes)
| Stressor (X) | Mean System Capacity (%) | SD | low.limit | up.limit |
|---|---|---|---|---|
| 10.1 | 100 | 0 | 100 | 100 |
| 12.91 | 100 | 0 | 100 | 100 |
| 14.27 | 98.45 | 2 | 85 | 98 |
| 15.22 | 95.34 | 3 | 85 | 95 |
| 16.09 | 91.71 | 6 | 75 | 95 |
| 17.11 | 86.53 | 10 | 60 | 95 |
| 17.79 | 80.83 | 15 | 33 | 93 |
| 18.11 | 76.68 | 20 | 33 | 93 |
| 18.52 | 70.98 | 20 | 33 | 93 |
| 19.42 | 58.03 | 20 | 20 | 85 |
| 19.76 | 53.37 | 20 | 20 | 80 |
| 19.98 | 51.81 | 20 | 15 | 80 |
Stressor Response Chart