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Toxic benthic freshwater cyanobacterial proliferations: Challenges and solutions for enhancing knowledge and improving monitoring and mitigation

Abstract : This review summarises knowledge on the ecology, toxin production, and impacts of toxic freshwater benthic cyanobacterial proliferations. It documents monitoring , management, and sampling strategies, and explores mitigation options. Toxic proliferations of freshwater benthic cyanobacteria (taxa that grow attached to substrates) occur in streams, rivers, lakes, and thermal and meltwater ponds, and have been reported in 19 countries. Anatoxin-and microcystin-containing mats are most commonly reported (eight and 10 countries, respectively). Studies exploring factors that promote toxic benthic cyanobacterial proliferations are limited to a few species and habitats. There is a hierarchy of importance in environmental and biological factors that regulate proliferations with variables such as flow (rivers), fine sediment deposition, nutrients, associated microbes, and grazing identified as key drivers. Regulating factors differ among colonisation, expansion, and dispersal phases.
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Submitted on : Tuesday, September 29, 2020 - 2:39:42 PM
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Susanna Wood, Laura Kelly, Keith Bouma-Gregson, Jean-François Humbert, Haywood Dail Laughinghouse, et al.. Toxic benthic freshwater cyanobacterial proliferations: Challenges and solutions for enhancing knowledge and improving monitoring and mitigation. Freshwater Biology, Wiley, 2020, 65, pp.1824 - 1842. ⟨10.1111/fwb.13532⟩. ⟨mnhn-02947818⟩

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