Zooplankton was collected at 10 stations in Dardanelle Reservoir from 1975 to 1982. Current data were compared to a five-year preoperational study phase. Rotifer taxa strongly dominated the community. Overall abundance was higher, variety about the same and diversity lower than those of comparable studies. Thermal discharges caused a dominance shift between two rotifer taxa, slightly depressed abundance and variety, did not noticeably affect diversity and elevated the phytoplankton/zooplankton ratio. Heated effluent also stimulated stronger fluctuations in abundance and variety. Other studies indicate that in upper sections of the Arkansas River drainage, microcrustaceans dominate lake habitats whereas rotifers dominate river habitats. In similar northern and eastern habitats, microcrustaceans were generally dominant.
Rickett, John D. and Watson, Robert L.
"Zooplankton Community Structure in Dardanelle Reservoir, Arkansas, 1975-1982,"
Journal of the Arkansas Academy of Science: Vol. 37
, Article 19.
Available at: http://scholarworks.uark.edu/jaas/vol37/iss1/19