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Summer heatwaves promote blooms of harmful cyanobacteria
- K. Jöhnk, J. Huisman, J. Sharples, B. Sommeijer, P. Visser, J. Stroom
- Environmental Science
- 1 March 2008
A coupled biological-physical model is developed investigating how competition for light between buoyant cyanobacteria, diatoms, and green algae in eutrophic lakes is affected by the meteorological conditions of this extreme summer heatwave, and warns that climate change is likely to yield an increased threat of harmful cyanobacterial blooms in eUTrophic freshwater ecosystems.
Changes in turbulent mixing shift competition for light between phytoplankton species
Competition theory is developed that predicts how changes in turbulent mixing affect competition for light between buoyant and sinking phytoplankton species, and warns that changes in the turbulence structure of natural waters, for instance driven by climate change, may induce major shifts in the species composition of phytopsized communities.
- J. Huisman, G. Codd, H. Paerl, B. Ibelings, J. Verspagen, P. Visser
- Environmental ScienceNature Reviews Microbiology
- 26 June 2018
Evidence indicating that cyanobacterial blooms are increasing in frequency, magnitude and duration globally is reviewed and species traits and environmental conditions that enable cyanobacteria to thrive are highlighted.
Effects of Light on the Microcystin Content of Microcystis Strain PCC 7806
- C. Wiedner, P. Visser, J. Fastner, J. Metcalf, G. Codd, L. R. Mur
- BiologyApplied and Environmental Microbiology
- 1 March 2003
A positive effect of PAR is shown up to the point where the maximum growth rate is reached, while at higher irradiances the microcystin production is inhibited.
How rising CO2 and global warming may stimulate harmful cyanobacterial blooms.
Salt tolerance of the harmful cyanobacterium Microcystis aeruginosa
Rising salinities in freshwater ecosystems are unlikely to suppress M. aeruginosa blooms, and may in fact enhance the exposure of aquatic organisms to elevated concentrations of extracellular microcystins, according to this study.
Rising CO2 Levels Will Intensify Phytoplankton Blooms in Eutrophic and Hypertrophic Lakes
- J. Verspagen, Dedmer B. Van de Waal, Jan F. Finke, P. Visser, E. van Donk, J. Huisman
- Environmental SciencePloS one
- 13 August 2014
A mathematical model is developed to predict dynamic changes in dissolved inorganic carbon (DIC), pH and alkalinity during phytoplankton bloom development and warns that rising CO2 levels may result in a marked intensification of phy Topolankton blooms in eutrophic and hypertrophic waters.
Selective suppression of harmful cyanobacteria in an entire lake with hydrogen peroxide.
Microcystis genotype succession in relation to microcystin concentrations in freshwater lakes
A seasonal succession of different Microcystis genotypes might often be a key mechanism determining microcystin concentrations in Micro Cystisdominated lakes, and factors driving the succession of toxic and non-toxic genotypes deserve further study.
Competition for Light between Toxic and Nontoxic Strains of the Harmful Cyanobacterium Microcystis
The competitive replacement of toxic by nontoxic strains offers a plausible explanation for the gradual decrease in average toxicity per cell during the development of dense Microcystis blooms.