Effects of flow fluctuations on the spawning habitat of a riverine fish
Southeastern Naturalist
By: T.B. Grabowski and J. Jeffery Isely
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Abstract
Shallow-water, lithophilic spawning fishes are among the most vulnerable to anthropogenic fluctuations in water levels. We monitored water levels and environmental conditions at the nest sites of Moxostoma robustum (Robust Redhorse) on a main-channel gravel bar in the Savannah River, GA-SC During the course of the 2005 spawning season, over 50% of the observed nest sites were either completely dewatered or left in near zero-flow conditions for several days. This occurred on two separate occasions, once early during the spawning season and then again near its conclusion. We hypothesize the habitat preferences of spawning Robust Redhorse leave them vulnerable to water-level fluctuations, and this phenomenon may be widespread in regulated river systems.
Suggested Citation
Grabowski, T., Isely, J.J., 2007, Effects of flow fluctuations on the spawning habitat of a riverine fish: Southeastern Naturalist, v. 6, no. 3, p. 471-478, https://doi.org/10.1656/1528-7092(2007)6[471:EOFFOT]2.0.CO;2.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Effects of flow fluctuations on the spawning habitat of a riverine fish |
| Series title | Southeastern Naturalist |
| DOI | 10.1656/1528-7092(2007)6[471:EOFFOT]2.0.CO;2 |
| Volume | 6 |
| Issue | 3 |
| Year Published | 2007 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Southeastern Naturalist |
| First page | 471 |
| Last page | 478 |