VU

kristallundlav

Bacidia absistens

Unknown

Overview

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

Bacidia absistens faces severe pressure from air pollution, particularly nitrogen deposition and sulfur compounds that alter the chemical composition of its substrate. Urban development and industrial activities continue to degrade the specific microhabitats this lichen requires, while climate change may be shifting the narrow environmental conditions necessary for its survival.

Threat summary

Habitat

This crustose lichen grows on specific mineral-rich substrates, typically found on exposed rock faces and stone surfaces in areas with particular atmospheric conditions. It requires stable microhabitats with specific pH levels and moisture regimes that are increasingly rare in developed landscapes.

TERRESTRIAL· major

Other threatened species in Ramalinaceae

CR

Ramalina protensa

Unknown
VU

Kornet grenlav

Ramalina polymorpha

Unknown
VU

Bacidia friesiana

Unknown
VU

Megalaria pulverea

Unknown

Frequently asked questions

Why is kristallundlav classified as Vulnerable?
kristallundlav 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. Bacidia absistens faces severe pressure from air pollution, particularly nitrogen deposition and sulfur compounds that alter the chemical composition of its substrate. Urban development and industrial activities continue to degrade the specific microhabitats this lichen requires, while climate change may be shifting the narrow environmental conditions necessary for its survival.
Where does kristallundlav live?
kristallundlav 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 kristallundlav?
The main threats to kristallundlav 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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