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Chalk Bristle Moss

Seligeria calcarea

UnknownLCEULCEU

Overview

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

Small Limestone Moss faces severe decline due to quarrying and limestone extraction activities that directly destroy its specialized habitat. Air pollution, particularly nitrogen deposition and acid rain, alters the chemical composition of limestone surfaces essential for the species' survival. Climate change poses additional risks through altered precipitation patterns and temperature fluctuations that affect the delicate moisture balance required by this calcicole moss.

Threat summary

Habitat

Small Limestone Moss grows exclusively on limestone rocks, cave walls, and calcareous substrates in humid, shaded environments. It typically occurs in limestone caves, crevices, and north-facing rock faces where consistent moisture and specific pH conditions are maintained.

Other threatened species in Seligeriaceae

VU

Irish Rock-bristle

Seligeria oelandica

Unknown
VU

Sharp Rock-bristle

Seligeria acutifolia

Unknown
Dwarf Rock-bristleVU

Dwarf Rock-bristle

Seligeria pusilla

Unknown
VU

Three-ranked Bristle Moss

Seligeria tristichoides

Unknown

Frequently asked questions

Why is Chalk Bristle Moss classified as Endangered?
Chalk Bristle Moss 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. Small Limestone Moss faces severe decline due to quarrying and limestone extraction activities that directly destroy its specialized habitat. Air pollution, particularly nitrogen deposition and acid rain, alters the chemical composition of limestone surfaces essential for the species' survival. Climate change poses additional risks through altered precipitation patterns and temperature fluctuations that affect the delicate moisture balance required by this calcicole moss.
Where does Chalk Bristle Moss live?
Chalk Bristle Moss 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 Chalk Bristle Moss?
The main threats to Chalk Bristle Moss 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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