CR

Porina hibernica

Unknown

Overview

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

Porina hibernica faces severe threats from atmospheric pollution, particularly nitrogen deposition and acid rain, which alter the chemistry of its specialized lichen substrates. Habitat degradation from air quality changes in its limited Irish range has caused dramatic population declines. Climate change compounds these pressures by altering moisture regimes essential for this crustose lichen's survival.

Threat summary

Habitat

This crustose lichen is endemic to specific coastal and montane rock surfaces in Ireland, typically growing on siliceous substrates in areas with high humidity and clean air conditions. It requires very particular microclimate conditions found only in pristine Atlantic coastal environments.

TERRESTRIAL· major

Frequently asked questions

Why is Porina hibernica classified as Critically Endangered?
Porina hibernica 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. Porina hibernica faces severe threats from atmospheric pollution, particularly nitrogen deposition and acid rain, which alter the chemistry of its specialized lichen substrates. Habitat degradation from air quality changes in its limited Irish range has caused dramatic population declines. Climate change compounds these pressures by altering moisture regimes essential for this crustose lichen's survival.
Where does Porina hibernica live?
Porina hibernica 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 Porina hibernica?
The main threats to Porina hibernica 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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