Abstract
Phytoplankton samples were collected quarterly from 1981-1990 at five stations representing discharge water from Arkansas Nuclear One, a nuclear generating station, and four "control" or "dispersal evaluation" stations. Seventy-five taxa representing five divisions were identified and enumerated. Community structure was evaluated using abundances, number of taxa, and Margalef's Richness, Shannon's Heterogeneity and Pielou's Evenness indices. No long-term trends were identified, but the beginning of cyclic variations, with a 7-year periodicity, in abundance, number of taxa, and Shannon's and Pielou's indices were apparent. Margalef's index values were constant during most of the study period. For all samples, t-tests and Mann-Whitney U tests between station 5 (discharge) and each of four "control" stations, revealed no significant differences with any variable.
Recommended Citation
Rickett, John D. and Watson, Robert L.
(1992)
"Phytoplankton Community Abundance and Diversity in Dardanelle Reservoir, Arkansas, 1981-1990,"
Journal of the Arkansas Academy of Science: Vol. 46, Article 6.
Available at:
https://scholarworks.uark.edu/jaas/vol46/iss1/6
Included in
Fresh Water Studies Commons, Terrestrial and Aquatic Ecology Commons, Water Resource Management Commons
