VU

Dryopteris sweetiorum

Stable

Overview

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

Dryopteris sweetiorum faces significant pressure from habitat degradation in its limited montane forest range. The species' restricted distribution makes it particularly vulnerable to localized disturbances including logging activities and agricultural encroachment into forest margins. Climate change poses an additional long-term threat as shifting temperature and precipitation patterns may alter the cool, moist conditions this fern requires for survival.

Threat summary

Habitat

This fern species inhabits cool, moist montane forests at moderate to high elevations, typically growing in shaded understory conditions with rich, well-drained soils. It shows a preference for rocky slopes and forest margins where humidity levels remain consistently high throughout the year.

Other threatened species in DRYOPTERIDACEAE

VU

Madeira Holly Fern

Arachniodes webbiana

Stable
EN

Dryopteris amblyodonta

Unknown
EN

Elaphoglossum beddomei

Declining
EN

Polystichum kenwoodii

Declining

Frequently asked questions

Why is Dryopteris sweetiorum classified as Vulnerable?
Dryopteris sweetiorum 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. Dryopteris sweetiorum faces significant pressure from habitat degradation in its limited montane forest range. The species' restricted distribution makes it particularly vulnerable to localized disturbances including logging activities and agricultural encroachment into forest margins. Climate change poses an additional long-term threat as shifting temperature and precipitation patterns may alter the cool, moist conditions this fern requires for survival.
Where does Dryopteris sweetiorum live?
Dryopteris sweetiorum 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 Dryopteris sweetiorum?
The main threats to Dryopteris sweetiorum 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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