CR

Polystichum deminuens

Unknown

Overview

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

Polystichum deminuens faces severe threats from habitat destruction due to urban development and agricultural expansion in its limited range. The species' extremely restricted distribution makes it particularly vulnerable to localized disturbances, while invasive plant species compete for resources in its specialized habitat. Climate change poses additional pressure through altered precipitation patterns that could disrupt the moist conditions this fern requires.

Threat summary

Habitat

This critically endangered fern inhabits moist, shaded rocky crevices and cliff faces in montane forests. It requires specific microhabitat conditions with consistent moisture and protection from direct sunlight, typically found at elevations between 1,000-2,000 meters.

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Frequently asked questions

Why is Polystichum deminuens classified as Critically Endangered?
Polystichum deminuens is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Polystichum deminuens faces severe threats from habitat destruction due to urban development and agricultural expansion in its limited range. The species' extremely restricted distribution makes it particularly vulnerable to localized disturbances, while invasive plant species compete for resources in its specialized habitat. Climate change poses additional pressure through altered precipitation patterns that could disrupt the moist conditions this fern requires.
Where does Polystichum deminuens live?
Polystichum deminuens occurs in Cuba. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Polystichum deminuens?
The main threats to Polystichum deminuens 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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