Dissolved Oxygen and Plains Sucker System Capacity
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Species Common Name
Plains Sucker
Latin Name (Genus species)
Pantosteus jordani
Stressor Name
Dissolved oxygen
Specific Stressor Metric
D
Stressor Units
mg/L
Vital Rate (Process)
Survival
Geography
Saskatchewan-Nelson and Missouri River drainages
Detailed SR Function Description
Dissolved oxygen (DO) is measured as a concentration of mg·L¯¹. It is critical for respiration, and thus, fish survival. For Plains Sucker, DO tolerances have not been tested experimentally and without biomass data from natural populations, upper and lower thresholds are difficult to estimate. The lower bound for this SR function was determined by the lowest oxygen concentration at which Plains Sucker were found (~ 2mg·L¯¹).
Function Derivation
Expert opinion; Landscape correlation
Transferability of Function
This stressor-response function is suitable for use on Plains Sucker populations within the Missouri River drainage and the Saskatchewan-Nelson River drainage in Canada; however, Milk River populations are subject to increased flows annually from April-October and may have adapted differing physiologies accordingly. Since Plains Sucker and the Cordilleran Sucker used to belong to a single species, Mountain Sucker, it may be reasonable to assume they have similar tolerances to DO; however, this has not been studied, so caution should be taken. Little is known about the physiological similarities between Plains Sucker and other catostomids and caution should be taken when using this function on other species.
Source of stressor Data
Practical application of the SR function necessitates that users obtain estimates of stressor magnitude (level) in the target system. Currently we only have DO data for a single site that contains Plains Sucker across its distribution. More data is being collected by Fisheries and Oceans Canada.
Function Type
continuous
Stressor Scale
linear
Citation(s)
Jarvis, L. 2022. Dissolved oxygen stressor-response function for Plains Sucker. Department of Fisheries and Oceans CEMPRA model for Plains Sucker.
File Upload
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Stressor Response csv data
Data_PLSU_DissolvedO2.csv
(175 bytes)
| Dissolved_O2 | Mean System Capacity (%) | SD | low.limit | up.limit |
|---|---|---|---|---|
| 12 | 100 | 0 | 0 | 100 |
| 10 | 100 | 0 | 0 | 100 |
| 8 | 100 | 0 | 0 | 100 |
| 6 | 100 | 0 | 0 | 100 |
| 4 | 80 | 0 | 0 | 100 |
| 2 | 60 | 0 | 0 | 100 |
| 1 | 0 | 0 | 0 | 100 |
| 0 | 0 | 0 | 0 | 100 |
Stressor Response Chart