Hudson Bay Sedge
VU

Hudson Bay Sedge

Carex heleonastes

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Carex_heleonastes

Overview

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

Hudson Bay Sedge faces significant threats from climate change-induced habitat loss as warming temperatures alter the delicate hydrology of its boreal wetland ecosystems. Drainage and development of peatlands and fens for agriculture and infrastructure projects have eliminated populations across much of its historical range. The species' specialized requirements for specific water chemistry and seasonal flooding patterns make it particularly vulnerable to hydrological disruption from both direct human activities and indirect climate effects.

Threat summary

Habitat

Hudson Bay Sedge inhabits calcareous fens, wet meadows, and shallow margins of alkaline lakes and ponds in boreal and subarctic regions. It requires specific water chemistry conditions with high mineral content and seasonal water level fluctuations that maintain open wetland conditions.

TERRESTRIAL· major

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Frequently asked questions

Why is Hudson Bay Sedge classified as Vulnerable?
Hudson Bay Sedge 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. Hudson Bay Sedge faces significant threats from climate change-induced habitat loss as warming temperatures alter the delicate hydrology of its boreal wetland ecosystems. Drainage and development of peatlands and fens for agriculture and infrastructure projects have eliminated populations across much of its historical range. The species' specialized requirements for specific water chemistry and seasonal flooding patterns make it particularly vulnerable to hydrological disruption from both direct human activities and indirect climate effects.
Where does Hudson Bay Sedge live?
Hudson Bay Sedge occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Hudson Bay Sedge?
The main threats to Hudson Bay Sedge 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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