What is it about?
Cyanobacteria are a type of photosynthetic bacteria that form part of phytoplankton. They can produce blooms, which are defined as high biomass accumulation, that pose a risk to human health as these organisms can produce potent toxins. They also have a negative impact on ecosystems. We studied an unprecedentedly large bloom of a particular species, Microcystis wesenbergii, which is expanding in some parts of the world. The bloom accumulated on a recreational area in Uruguay, South America, covering near 40 km of shoreline on the Río de la Plata estuary. The bloom was toxic (microcystin) and also remarkable by the macroscopic size of the cyanobacterial colonies, reaching 1.5 cm in diameter.
Featured Image
Why is it important?
We identified possible factors related to the macroscopic size of the cyanobacterial colonies. We detected toxins in the water and in the sand on the beach. After analysing local factors, we concluded that wind direction and speed played a critical role in explaining the dynamics of this phenomenon.
Perspectives
More studies are needed to understand the dynamic and world distribution of Microcystis wesenbergii.
Professor Sylvia Bonilla
Universidad de la Republica Uruguay
Read the Original
This page is a summary of: Exceptionally large clumps of Microcystis wesenbergii on Río de la Plata beaches driven by changes in wind direction, Limnologica, May 2026, Elsevier,
DOI: 10.1016/j.limno.2026.126329.
You can read the full text:
Contributors
The following have contributed to this page
