EN

Cliostomum corrugatum

Local name: trefärgslav

Unknown

Overview

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

Cliostomum corrugatum faces severe decline due to air pollution, particularly nitrogen deposition and sulfur compounds that alter the chemical composition of its bark substrates. The species is highly sensitive to atmospheric changes, with populations disappearing from areas experiencing industrial pollution and urban air quality degradation. Climate change compounds these pressures by altering precipitation patterns and humidity levels critical for this lichen's survival.

Threat summary

Habitat

This crustose lichen grows exclusively on the bark of old deciduous trees, particularly favoring smooth-barked species in mature forests with stable microclimates. It requires areas with high air quality, consistent humidity levels, and minimal atmospheric pollution to establish and maintain viable populations.

TERRESTRIAL· major

Other threatened species in Ramalinaceae

CR

Ramalina protensa

Unknown
VU

Kornet grenlav

Ramalina polymorpha

Unknown
VU

Bacidia friesiana

Unknown
VU

kristallundlav

Bacidia absistens

Unknown

Frequently asked questions

Why is trefärgslav classified as Endangered?
trefärgslav is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Cliostomum corrugatum faces severe decline due to air pollution, particularly nitrogen deposition and sulfur compounds that alter the chemical composition of its bark substrates. The species is highly sensitive to atmospheric changes, with populations disappearing from areas experiencing industrial pollution and urban air quality degradation. Climate change compounds these pressures by altering precipitation patterns and humidity levels critical for this lichen's survival.
Where does trefärgslav live?
trefärgslav 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 trefärgslav?
The main threats to trefärgslav 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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