VU

Notched Rustwort

Marsupella emarginata

UnknownLCEULCEU

Overview

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

Notched Rustwort faces significant pressure from atmospheric pollution, particularly acid rain and nitrogen deposition, which alter the chemistry of its specialized rock surface habitats. Climate change poses an additional threat through altered precipitation patterns and temperature fluctuations that affect the delicate moisture balance required for this bryophyte's survival. Habitat degradation from quarrying activities and recreational rock climbing in some locations further fragments already limited populations.

Threat summary

Habitat

Notched Rustwort grows exclusively on acidic rock surfaces, particularly on vertical or overhanging faces of sandstone, quartzite, and similar siliceous rocks in upland areas. It requires consistently moist but well-drained conditions, typically found in sheltered locations with high humidity and minimal direct sunlight.

Other threatened species in Gymnomitriaceae

CR

Arctic Rustwort

Marsupella arctica

Unknown
VU

Funck's Rustwort

Marsupella funckii

Unknown
Earth-cup FlapwortCR

Earth-cup Flapwort

Nardia geoscyphus

Unknown

Frequently asked questions

Why is Notched Rustwort classified as Vulnerable?
Notched Rustwort 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. Notched Rustwort faces significant pressure from atmospheric pollution, particularly acid rain and nitrogen deposition, which alter the chemistry of its specialized rock surface habitats. Climate change poses an additional threat through altered precipitation patterns and temperature fluctuations that affect the delicate moisture balance required for this bryophyte's survival. Habitat degradation from quarrying activities and recreational rock climbing in some locations further fragments already limited populations.
Where does Notched Rustwort live?
Notched Rustwort 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 Notched Rustwort?
The main threats to Notched Rustwort 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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