Boulder Cover and Steelhead Habitat Density Scalar
stobias
View all records in the stressor response library
Species Common Name
Steelhead Trout
Latin Name (Genus species)
Oncorhynchus mykiss
Stressor Name
Boulder cover
Specific Stressor Metric
Proportion of boulder substrate cover
Stressor Units
%
Vital Rate (Process)
Density
Life Stage
Detailed SR Function Description
Figure 2. Habitat preference relationships applied within the UCM for scaling standard parr densities to
those expected under the specific habitat features in a given stream.
Scaled from the original curve so that the highest upper limit value equals to 100% (original value was 70.3%).
those expected under the specific habitat features in a given stream.
Scaled from the original curve so that the highest upper limit value equals to 100% (original value was 70.3%).
Function Derivation
expert opinion
Function Type
continuous
Stressor Scale
linear
Citation(s)
Cramer, S. P., & Ackerman, N. K. (2009). Prediction of stream carrying capacity for steelhead (Oncorhynchus mykiss): the unit characteristic method. In American Fisheries Society, Series: Symposium (Vol. 71, pp. 255-288).
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Stressor Response csv data
2009 Cramer Boulder.csv
(133 bytes)
| Stressor (X) | Mean System Capacity (%) | SD | low.limit | up.limit |
|---|---|---|---|---|
| 0 | 13.51351351 | 0 | 0 | 0 |
| 0.25 | 13.51351351 | 0 | 0 | 0 |
| 0.75 | 100 | 0 | 0 | 0 |
| 1 | 100 | 0 | 0 | 0 |
Stressor Response Chart