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SIL Proceedings, 1922-2010
Internationale Vereinigung für Theoretische und Angewandte Limnologie: Verhandlungen
Volume 23, 1988 - Issue 4
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XII. Ecology of Aquatic Organisms. 2. Algae and Other Plants

Macronutrient interactions involved in cyanobacterial bloom formation

With 3 figures in the text

Pages 1881-1885 | Published online: 01 Dec 2017
 

Summary

Cyclostat and lake mesocosm experiments have indicated that the relative gas vacuolation (cyclostat cultures) and buoyancy (lake populations) of cyanobacteria can very inversely with the availability of inorganic carbon (Ci). Here, we report the results of experiments, involving various C, N and P treatments, on natural populations of Oscillatoria and Anabaena. These results suggest that the buoyancy responses of cyanobacteria to changes in Ci) availability depend on the availability of N and P. For example, additions of Ci) alone to surface populations of Anabaena and Oscillatoria hastened the decline of such populations. Whereas, Ci) enrichment of N- and P-enriched, deepwater populations of Oscillatoria stimulated bloom formation.

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