CR

dimkrimmerlav

Rinodina sheardii

Unknown

Overview

Rinodina sheardii is a crustose lichen species that forms thin, grayish to brownish crusts on rock surfaces. This inconspicuous lichen plays an important ecological role in primary succession, helping to break down rock substrates and create soil conditions that enable other organisms to establish in harsh environments.

Rinodina sheardii is critically endangered due to its extremely limited distribution and vulnerability to habitat degradation. This lichen species faces severe threats from air pollution, climate change, and human disturbance to its specialized rocky coastal habitats.

Threat summary

Habitat

Rinodina sheardii grows exclusively on siliceous rocks and stone walls in exposed, well-lit locations. It typically colonizes hard, acidic rock surfaces in upland areas where it can withstand extreme temperature fluctuations and intense solar radiation.

Frequently asked questions

Why is dimkrimmerlav classified as Critically Endangered?
dimkrimmerlav is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Rinodina sheardii is critically endangered due to its extremely limited distribution and vulnerability to habitat degradation. This lichen species faces severe threats from air pollution, climate change, and human disturbance to its specialized rocky coastal habitats.
Where does dimkrimmerlav live?
dimkrimmerlav 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 dimkrimmerlav?
The main threats to dimkrimmerlav 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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