Response of plankton communities to whole-lake Ca(OH)2 and CaCO3 additions in eutrophic hardwater lakes

Anas Ghadouani, Y. Zhang, E.E. Prepas, B. Pinel-Alloul, S. Reedyk, P.A. Chambers, R.D. Roberts, G. Methot, A. Raik, M. Holst

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    17 Citations (Scopus)

    Abstract

    1. The impact of whole-lake lime (slaked lime, Ca(OH)(2), and/or calcite, CaCO3) addition on plankton communities was evaluated in eutrophic hardwater lakes on the North American Boreal Plain.2. Two lakes received a single treatment of lime (Ca(OH)(2) at 74 or 107 mg L-1), two lakes received multiple treatments with Ca(OH)(2) and/or CaCO3 (5-78 mg L-1), and four lakes were untreated and served as reference systems.3. Over the long-term (> 1 year), phytoplankton biomass was reduced in multiple-dose lakes, but not in single-dose lakes. Cyanobacteria typically dominated the algal community in the years before, during and after lime treatment in both single- and multiple-dose lakes.4. In the single-dose lakes, randomized intervention analysis showed no significant change in the biomass of zooplankton after lime addition.
    Original languageEnglish
    Pages (from-to)1105-1119
    JournalFreshwater Biology
    Volume46
    DOIs
    Publication statusPublished - 2001

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