VU

Coregonus subautumnalis

Declining

Overview

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

Coregonus subautumnalis faces significant pressure from climate change-induced warming of Arctic waters, which disrupts its cold-water spawning requirements and alters prey availability. Commercial and subsistence fishing activities have historically reduced population numbers, while habitat degradation from coastal development and pollution in key spawning areas continues to impact reproductive success. The species' restricted Arctic distribution makes it particularly vulnerable to rapid environmental changes occurring in polar regions.

Threat summary

Habitat

This Arctic cisco inhabits cold, brackish coastal waters and estuaries throughout the Arctic Ocean, particularly in Alaska, northern Canada, and Siberia. The species requires specific temperature ranges for spawning and feeds in both marine and freshwater environments during different life stages.

Marine oceanic· majorMarine coastal/supratidal· majorWetlands (inland)· majorWetlands (inland) - Permanent rivers/streams· majorWetlands (inland) - Permanent freshwater lakes· majorMarine neritic· major

Frequently asked questions

Why is Coregonus subautumnalis classified as Vulnerable?
Coregonus subautumnalis is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Coregonus subautumnalis faces significant pressure from climate change-induced warming of Arctic waters, which disrupts its cold-water spawning requirements and alters prey availability. Commercial and subsistence fishing activities have historically reduced population numbers, while habitat degradation from coastal development and pollution in key spawning areas continues to impact reproductive success. The species' restricted Arctic distribution makes it particularly vulnerable to rapid environmental changes occurring in polar regions.
Where does Coregonus subautumnalis live?
Coregonus subautumnalis occurs in Russia. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Coregonus subautumnalis?
The main threats to Coregonus subautumnalis 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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