VU

oslosprekklav

Acarospora impressula

Unknown

Overview

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

Acarospora impressula faces severe threats from urban development and air pollution in its limited Norwegian range. The species' restriction to specific rock substrates in urban and semi-urban environments makes it particularly vulnerable to construction activities and infrastructure development. Air quality degradation from vehicle emissions and industrial activities further compromises the lichen's ability to photosynthesize and maintain healthy populations.

Threat summary

Habitat

This crustose lichen grows exclusively on siliceous rocks and concrete surfaces in urban and suburban environments around Oslo, Norway. It typically colonizes exposed rock faces, stone walls, and artificial substrates in areas with moderate air circulation.

TERRESTRIAL· major

Other threatened species in Acarosporaceae

EN

Acarospora anomala

Unknown
gyttrad kalkspricklavVU

gyttrad kalkspricklav

Acarospora cervina

Unknown
EN

kalkskjold

Glypholecia scabra

Unknown
donker steenschubjeVU

donker steenschubje

Acarospora nitrophila

Unknown

Frequently asked questions

Why is oslosprekklav classified as Vulnerable?
oslosprekklav 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. Acarospora impressula faces severe threats from urban development and air pollution in its limited Norwegian range. The species' restriction to specific rock substrates in urban and semi-urban environments makes it particularly vulnerable to construction activities and infrastructure development. Air quality degradation from vehicle emissions and industrial activities further compromises the lichen's ability to photosynthesize and maintain healthy populations.
Where does oslosprekklav live?
oslosprekklav 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 oslosprekklav?
The main threats to oslosprekklav 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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