CR

Buellia violaceofusca

Unknown

Overview

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

Buellia violaceofusca faces severe threats from air pollution and acid rain, which directly damage its thallus structure and disrupt the delicate chemical balance required for photosynthesis. Urban development and industrial activities have eliminated much of its suitable substrate, while climate change alters the specific humidity and temperature conditions this lichen requires for survival.

Threat summary

Habitat

This crustose lichen grows on calcareous rocks and concrete surfaces in urban and semi-urban environments, particularly favoring alkaline substrates with specific moisture and light conditions. It typically occurs on walls, monuments, and natural limestone outcrops in areas with moderate air quality.

TERRESTRIAL· major

Frequently asked questions

Why is Buellia violaceofusca classified as Critically Endangered?
Buellia violaceofusca 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. Buellia violaceofusca faces severe threats from air pollution and acid rain, which directly damage its thallus structure and disrupt the delicate chemical balance required for photosynthesis. Urban development and industrial activities have eliminated much of its suitable substrate, while climate change alters the specific humidity and temperature conditions this lichen requires for survival.
Where does Buellia violaceofusca live?
Buellia violaceofusca 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 Buellia violaceofusca?
The main threats to Buellia violaceofusca 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.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.