EN

Caspian Bilacunaria

Bilacunaria caspia

Declining

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Bilacunaria caspia faces severe threats from water level fluctuations and salinity changes in the Caspian Sea, which directly impact its specialized brackish water habitat requirements. Coastal development and pollution from oil extraction activities around the Caspian basin further degrade the shallow water environments where this endemic gastropod occurs. Climate change-induced alterations to precipitation patterns and temperature regimes threaten to disrupt the delicate ecological balance of its restricted range.

Threat summary

Habitat

This endemic gastropod inhabits the shallow brackish waters and coastal zones of the Caspian Sea, particularly in areas where freshwater inputs create optimal salinity gradients. It typically occurs in sandy and muddy substrates along protected shorelines and estuarine environments.

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Frequently asked questions

Why is Caspian Bilacunaria classified as Endangered?
Caspian Bilacunaria is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Bilacunaria caspia faces severe threats from water level fluctuations and salinity changes in the Caspian Sea, which directly impact its specialized brackish water habitat requirements. Coastal development and pollution from oil extraction activities around the Caspian basin further degrade the shallow water environments where this endemic gastropod occurs. Climate change-induced alterations to precipitation patterns and temperature regimes threaten to disrupt the delicate ecological balance of its restricted range.
Where does Caspian Bilacunaria live?
Caspian Bilacunaria occurs in Azerbaijan. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Caspian Bilacunaria?
The main threats to Caspian Bilacunaria are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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