Which environmental problems have researchers studied in the Caspian Sea region?

Researchers have studied a variety of environmental challenges in the Caspian Sea region, focusing on the preservation of the sea's biological productivity, unique natural features, and the protection of its marine environment.1

Key environmental problems identified by researchers include:

• Water Level Fluctuations: Long-term changes in the sea level, driven by climate change and human activities such as reservoir construction and water diversion for irrigation and industry, have significantly impacted the region.234
• Pollution and Habitat Alteration: The ecosystem faces degradation from water pollution caused by industrial and municipal effluents, as well as agricultural runoff. Additionally, the construction of dams and reservoirs on inflowing rivers like the Volga River has blocked spawning grounds for anadromous fish species.54
• Threats to Biodiversity: The sturgeon population has declined due to habitat loss and overfishing. Similarly, the Caspian seal faces multiple threats, including hunting, accidental capture as bycatch in fishing nets, disease outbreaks like canine distemper, and a reduction in prey availability caused by commercial fishing and the invasion of comb jellyfish.6457