Kyialnytskyi Lagoon: The Threat of Drying Up and Possible Solutions
This summer, the Kyialnytskyi Lagoon has transformed into a vast salt desert. The heat has evaporated the shallow waters, leaving a thick layer of salt on the lagoon's bottom. Locals claim that it’s possible to collect salt by the sack here. Is the lagoon facing complete desiccation, and how can it be saved? Experts from the National Nature Park «Kyialnytskyi» provide insights.
The seasonal drying up of the lagoon is no longer considered an anomaly. The Great Kyialnyk River, which once flowed into the lagoon, has practically ceased to exist. Other factors contributing to the drying include illegal sand extraction in the area and increased evaporation due to climate change.
In 2020, the lagoon was also covered with a thick salt crust. Concerned locals encouraged visitors to take as much salt as possible, reminiscent of the old chums.
Salt precipitation is a common seasonal occurrence, experts from the National Nature Park «Kyialnytskyi» note. Due to a lack of rain and high temperatures this summer, the lagoon has dried up again. Its high salinity has resulted in a significant accumulation of crystallized salt, which can turn pink due to the presence of unicellular planktonic algae called Dunaliella. These algae thrive in harsh conditions and produce dark orange pigments, beta-carotene, for survival.
The characteristic pink hue of the lagoon is especially pronounced during hot and dry weather. The accumulation of algal biomass enhances the lagoon's therapeutic mud with valuable bioactive components.
The therapeutic properties will remain intact, but salinization is essential, experts stress.
The unique lagoon is not currently at risk of disappearing. In the fall, cooler temperatures and increased precipitation will help restore its water balance. Additionally, a hydraulic structure will be activated in winter to supply seawater from the Black Sea, as long as it reaches the necessary temperature of no higher than +8°C.
Meanwhile, the National Nature Park «Kyialnytskyi» has established a working group to seek the best solutions for the lagoon's hydration and salinization issues. Various potential rescue options are being evaluated and financially assessed, including:
- installing salinity filters during seawater introduction;
- salt extraction in Kyialnyk to reduce concentration;
- diverting water from the Hadzhybei Lagoon after purification;
- supplying the lagoon with treated wastewater from Odesa;
- diverting water directly from the Dniester, although this project is extremely costly.
It may be a combined project, according to the national park's experts.
Meanwhile, the State Ecological Inspection is monitoring the lagoon's condition and promises to inform the public about any changes.
In the meantime, locals are eager to admire the stunning landscapes of the unique «pink wonder» of Odesa region.