The toxicity of chlorine to a common vascular aquatic plant
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Abstract
Myriophyllum spicatum was exposed to various chlorine concentrations on a continuous and intermittent basis in 96-h toxicity studies utilizing a proportional diluter. Continuous exposure to chlorine concentrations as low as 0.05 mg l−1 total residual chlorine (TRC) depressed shoot and total plant dry weights approx. 30% relative to controls. Shoot length was depressed approx. 16% at this concentration. Chlorophyll a was depressed 25% at 0.1 mg l−1 TRC. However, intermittent exposure of plants to chlorine for three 2-h periods daily for 96 h indicated an insensitivity to repeated short term chlorine exposure at all concentrations but 1.0 mg l−1 TRC. These results indicate that high level chlorine discharges from waste water facilities and electric generating plants could be a contributing factor impacting nearby submerged aquatic vegetation.
Suggested Citation
Watkins, C., and Hammerschlag, R., 1984, The toxicity of chlorine to a common vascular aquatic plant: Water Research, v. 18, no. 8, p. 1037-1043, https://doi.org/10.1016/0043-1354(84)90256-2.
ISSN: 1879-2448 (online)
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | The toxicity of chlorine to a common vascular aquatic plant |
| Series title | Water Research |
| DOI | 10.1016/0043-1354(84)90256-2 |
| Volume | 18 |
| Issue | 8 |
| Year Published | 1984 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 7 p. |
| First page | 1037 |
| Last page | 1043 |