EN

Porpidia platycarpoides

Local name: västlig blocklav

Unknown

Overview

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

Västlig blocklav faces severe threats from air pollution, particularly nitrogen deposition and sulfur compounds that alter the chemical composition of its rocky substrates. Climate change poses additional risks through altered precipitation patterns and temperature fluctuations that affect the delicate moisture balance this lichen requires. Habitat fragmentation from quarrying and coastal development has reduced available suitable rock surfaces in its limited range.

Threat summary

Habitat

This lichen species grows exclusively on siliceous rocks and boulders in coastal and near-coastal environments, particularly favoring exposed surfaces with specific moisture and light conditions. It requires clean air environments and is highly sensitive to atmospheric pollution, making it an important indicator species for air quality.

TERRESTRIAL· major

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rosskivlav

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Montipora effusa

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Montipora calcarea

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Frequently asked questions

Why is västlig blocklav classified as Endangered?
västlig blocklav 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. Västlig blocklav faces severe threats from air pollution, particularly nitrogen deposition and sulfur compounds that alter the chemical composition of its rocky substrates. Climate change poses additional risks through altered precipitation patterns and temperature fluctuations that affect the delicate moisture balance this lichen requires. Habitat fragmentation from quarrying and coastal development has reduced available suitable rock surfaces in its limited range.
Where does västlig blocklav live?
västlig blocklav occurs in Australia, Belgium, Brazil, France, Germany, and Greece (plus 13 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to västlig blocklav?
The main threats to västlig blocklav 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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