Harmful algae blooms are usually a consequence of eutrophication in freshwater lakes. In a study recently published in Freshwater Science, researchers from the Annis Water Research Institute in Michigan studied changes in harmful algae blooms in Muskegon Lake from 2003-2014. Their analysis showed that even though water temperatures increased over the period, harmful algae blooms decreased, indicating that restoration efforts in the watershed area have effectively reduced excessive nutrient runoff into the watershed.
Reference:
Mancuso JL, et al. Bloom and bust: Historical trends of harmful algal blooms in Muskegon Lake, Michigan, a Great Lakes estuary. Freshwater Science, Vol 40, Number 3, 2021. https://www.journals.uchicago.edu/doi/abs/10.1086/716236
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