The appearance of cyanobacteria in the Uruguay River shores of Entre Ríos worries the riverside communities and tourists visiting the region.
This Sunday, the phenomenon known as “green algae” was observed worryingly on the beaches of the Salto Grande Lake, as reported by Noticias Ambientales.
Impact on fauna and visitors due to the presence of cyanobacteria in the Uruguay River
Photographs taken by people in the area showed animals like capybaras completely covered in algae containing dangerous bacteria.
Also, the presence of numerous people, especially children, in the water despite the noticeable color and the “unbearable smell” was alarming.
It was surprising, therefore, that the Codesal authorities kept the beaches open despite the strong presence of the phenomenon.
CARU Statement
The Administrative Commission of the Uruguay River (CARU) recently reported the presence of cyanobacteria blooms in the waters of the Uruguay River and its tributaries. This phenomenon known as green algae “usually occurs during the summer due to high temperatures and can occur in different bodies of water.”
Cyanobacteria are microorganisms capable of photosynthesis because they contain chlorophyll. These are known as “blue-green algae” and are present in both freshwater and saltwater bodies.
Some of these cyanobacteria produce toxins, representing a risk to human health and the ecosystem.
Prevention, care, and recommendations
The proliferation of cyanobacteria can affect beaches for hours or days, with possible health impacts. The best prevention measure is to carefully observe the water and sand. If the water has a greenish color, a murky appearance, or accumulations of foam-like material, direct contact is not recommended.
The main routes of exposure are ingesting water directly (which can happen inadvertently while practicing a water sport, or when children and pets play in the water) or direct skin contact. The more water ingested at once or in small amounts, the higher the risk of intoxication.
The most vulnerable groups to toxins produced by cyanobacteria are children, pregnant women, older adults, immunocompromised individuals, as well as fishermen and lifeguards who have more water contact. Pets are also particularly sensitive and can show symptoms quickly.
The main symptoms of exposure can include: headache, digestive discomfort, nausea and dizziness, diarrhea, vomiting, skin irritation (rash), and eye (conjunctivitis), ear (otitis), nose, and throat inflammation, dry cough, pneumonia, and severe liver damage.
It is essential to highlight that the effects of intoxication by cyanotoxins can be acute effects (intense over a short period) or chronic (mild over long periods).
Cover photo: Diario Río Uruguay.
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