, Volume 63, Issue 3, pp 255–262 | Cite as

Biological and water quality effects of artificial mixing of Arbuckle Lake, Oklahoma, during 1977

  • Dale W. Toetz


This paper describes the effects of total lake mixing with 16 axial flow (Garton) pumps on the water quality, algal biomass and community metabolism of Arbuckle Lake, Oklahoma.

Pumping began on July 1, 1977, and subsequently lowered the thermocline throughout the lake. The concentration of dissolved oxygen rose in formerly anoxic strata. Water quality in the former hypolimnion improved. Concentration of ammonia and BOD5 decreased, and concentrations of manganese remained unchanged in 1977 compared to the control year (1976). But, concentrations of sulfide in the hypolimnion were higher in 1977 than in 1976. Algal biomass as chlorophyll a was about the same in 1977 as in 1978. The depth of the Secchi disc was also the same. An algal bloom did not occur. Pumping decreased the ratio gross production: community respiration as measured by a free water method, suggesting that lakes which are artificially mixed will have lower net primary productivities than lakes which are not artificially mixed.


Artificial destratification lake mixing water quality water chemistry algal biomass chlorophyll a community metabolism reservoir Oklahoma 


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Copyright information

© Dr. W. Junk b.v. Publishers 1979

Authors and Affiliations

  • Dale W. Toetz
    • 1
  1. 1.School of Biological SciencesOklahoma State UniversityStillwater

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