Summer Dissolved Oxygen Concentrations in Forested Streams of Northern Louisiana
Dissolved oxygen (DO) concentrations are critical to aquatic communities and are an important measure of water quality conditions in streams. Best Management Practices that maintain shade near streams and avoid introduction of slash should minimize forest management effects on DO concentrations. However, many streams in the South Central Plains Ecoregion of Louisiana have summer DO concentrations below the 5 mg/L criterion recommended by EPA. Based on a synoptic survey of 43 least-impaired and reference forest stream reaches, we found that over 80% of these reaches had DO concentrations below 5 mg/L, and almost 60% of monitored sites had DO concentrations below 3 mg/L. These low DO concentrations are associated with low streamflow velocities and organic channel bottoms. Unachievable DO standards in the region need to be addressed to realistically reflect local environmental conditions. South. J. Appl. For. 27(2):92–99.
Keywords: Best Management Practices (BMPs); Water quality; biochemical oxygen demand (BOD); dissolved oxygen (DO); environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; natural resource management; natural resources; reaeration; slash; total maximum daily load (TMDL)
Document Type: Miscellaneous
Affiliations: Plum Creek Timber Company, Inc., P.O. Box 1990 Columbia Falls, Montana, 59912, email@example.com
Publication date: 2003-05-01
- Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.
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