CR

klippdropplav

Cliostomum tenerum

Unknown

Overview

Klippdropplav (Cliostomum tenerum) is a crustose lichen species that forms thin, grayish-white to pale yellow crusts on rock surfaces. This inconspicuous lichen plays a crucial role in primary succession and soil formation processes, slowly breaking down mineral substrates through biochemical weathering while providing microhabitat for invertebrates and other microorganisms.

Cliostomum tenerum, a crustose lichen species, faces severe population declines primarily due to habitat loss and degradation from human activities. Air pollution, particularly nitrogen deposition and sulfur compounds, significantly impacts this pollution-sensitive species. Climate change is altering the specific microhabitat conditions this lichen requires for survival.

Threat summary

Habitat

Klippdropplav colonizes exposed siliceous rock faces and boulder surfaces in montane and subalpine environments, particularly favoring north-facing cliff faces and rock outcrops with consistent moisture availability. The species typically occurs on hard, acidic substrates in areas with clean air and minimal direct sunlight exposure.

TERRESTRIAL· major

Other threatened species in Ramalinaceae

CR

Ramalina protensa

Unknown
VU

Kornet grenlav

Ramalina polymorpha

Unknown
VU

Bacidia friesiana

Unknown
VU

kristallundlav

Bacidia absistens

Unknown

Frequently asked questions

Why is klippdropplav classified as Critically Endangered?
klippdropplav 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. Cliostomum tenerum, a crustose lichen species, faces severe population declines primarily due to habitat loss and degradation from human activities. Air pollution, particularly nitrogen deposition and sulfur compounds, significantly impacts this pollution-sensitive species. Climate change is altering the specific microhabitat conditions this lichen requires for survival.
Where does klippdropplav live?
klippdropplav 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 klippdropplav?
The main threats to klippdropplav 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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