Water quality, clearcut sites, headwater streams, timber management
A long term study on the effects of clearcut forest harvest and regeneration was conducted in a representative watershed of the Ouachita National Forest. Fourteen water quality parameters were analyzed to characterize baseline water quality. Water quality was classified as excellent. A total of 350 quantitative benthic samples and 15 ultraviolet light trap samples yielded 173 species of macroinvertebrates. Mean densities of macroinvertebrates ranged from 4,800/m2 to 23,040/m2 and averaged 12,499/m2 in the upper Little Missouri River. Twenty-two quantitative collections of fishes were made at representative riffles and pools. The average biomass estimates for riffles and pools were 5.69 kg/ha and 16.66 kg/ha, respectively. The total numbers of individuals per hectare were higher in riffles than in pools. Lower standing crops were observed in a tributary stream. A Phase II study will evaluate and summarize the effects of clearcutting approximately 113.3 hectares of deciduous forest on water quality and aquatic life in the watershed.
Bacon, Edmond J.. 1983. The Effects of Forest Harvest on Water Quality and Aquatic Life (Phase I). Arkansas Water Resources Center, Fayetteville, AR. PUB100.