Ellesmere Island draba
Draba subcapitata
Overview
Ellesmere Island whitlow-grass is a small, cushion-forming perennial herb endemic to the Canadian Arctic archipelago, characterized by tiny white four-petaled flowers and densely clustered basal leaves adapted to extreme cold. This diminutive Arctic specialist plays a crucial role in stabilizing soil and providing early-season nectar resources in one of Earth's most challenging environments.
Ellesmere Island whitlow-grass faces severe threats from climate change, which is rapidly altering its Arctic habitat through warming temperatures and changing precipitation patterns. The species' extremely limited range on Ellesmere Island makes it particularly vulnerable to habitat loss and environmental changes, with small population sizes increasing extinction risk from stochastic events.
Habitat
This species inhabits exposed rocky slopes, gravelly ridges, and sparse tundra communities in the High Arctic, typically growing in well-drained calcareous soils at elevations where harsh winds and extreme temperature fluctuations create specialized microhabitats.
Other threatened species in Brassicaceae
Frequently asked questions
Why is Ellesmere Island draba classified as Endangered?
Where does Ellesmere Island draba live?
What are the main threats to Ellesmere Island draba?
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