Biomanipulation: A review of biological control measures in eutrophic waters and the potential for Murray cod Maccullochella peelii peelii to promote water quality in temperate Australia

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Biomanipulation is a method of controlling algal blooms in eutrophic freshwater ecosystems. The most common approach has been to enhance herbivores through a reduction of planktivorous fish and introduction of piscivorous fish. The method was originally intended to reduce grazing pressure on zooplankton, thereby increasing grazing pressure on phytoplankton to increase water clarity and promote the growth of aquatic macrophytes. Biomanipulation has received considerable attention since it was proposed in 1975 where innovative approaches and explanations of the processes have been developed. Although many successful biomanipulation exercises have been conducted internationally, it has received comparatively little attention in the Southern Hemisphere and has not been trialled in the southern temperate climate of South Australia. This is a review to speculate upon the criteria for and against the application of biomanipulation in southern temperate Australia using the native species Murray cod (Maccullochella peelii peelii) and to suggest future research.

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