VU

kalkkranslav

Phaeophyscia constipata

Unknown

Overview

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

Phaeophyscia constipata faces severe decline due to air pollution, particularly nitrogen deposition and sulfur dioxide emissions that alter the chemical composition of its bark substrates. Urban development and industrial activities have eliminated many suitable host trees, while climate change is shifting precipitation patterns that affect the delicate moisture balance this lichen requires. Agricultural intensification has reduced the availability of old-growth trees with appropriate bark chemistry in rural landscapes.

Threat summary

Habitat

This crustose lichen grows exclusively on the bark of deciduous trees, particularly favoring species with nutrient-rich, slightly basic bark chemistry such as ash, elm, and maple. It typically occurs in areas with moderate air humidity and is sensitive to atmospheric pollution levels.

Other threatened species in Physciaceae

Star Rosette LichenEN

Star Rosette Lichen

Physcia stellaris

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VU

fransrosettlav

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pudrad rosettlavVU

pudrad rosettlav

Physcia magnussonii

Unknown
VU

raggkranslav

Phaeophyscia kairamoi

Unknown

Frequently asked questions

Why is kalkkranslav classified as Vulnerable?
kalkkranslav 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. Phaeophyscia constipata faces severe decline due to air pollution, particularly nitrogen deposition and sulfur dioxide emissions that alter the chemical composition of its bark substrates. Urban development and industrial activities have eliminated many suitable host trees, while climate change is shifting precipitation patterns that affect the delicate moisture balance this lichen requires. Agricultural intensification has reduced the availability of old-growth trees with appropriate bark chemistry in rural landscapes.
Where does kalkkranslav live?
kalkkranslav 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 kalkkranslav?
The main threats to kalkkranslav 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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