VU

Frayed Ribbon Lichen

Ramalina roesleri

Unknown

Overview

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

Frayed Ribbon Lichen faces severe decline from air pollution, particularly nitrogen deposition and sulfur compounds that alter its substrate chemistry and disrupt symbiotic relationships. Urban development and coastal infrastructure projects have eliminated many of its specialized rocky coastal habitats, while climate change intensifies salt spray patterns and storm frequency that affect its delicate thallus structure.

Threat summary

Habitat

This distinctive lichen grows exclusively on exposed maritime rocks and cliff faces along temperate coastlines, requiring the specific microclimate created by salt spray and oceanic humidity. It typically colonizes calcium-rich substrates in the splash zone where few other lichens can survive the harsh saline conditions.

Other threatened species in Ramalinaceae

EN

Laurer's Catillaria

Megalaria laureri

Unknown
VU

Megalaria pulverea

Unknown
CR

Ramalina protensa

Unknown
circumspect dotted lichenCR

circumspect dotted lichen

Bacidia circumspecta

Unknown

Frequently asked questions

Why is Frayed Ribbon Lichen classified as Vulnerable?
Frayed Ribbon Lichen 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. Frayed Ribbon Lichen faces severe decline from air pollution, particularly nitrogen deposition and sulfur compounds that alter its substrate chemistry and disrupt symbiotic relationships. Urban development and coastal infrastructure projects have eliminated many of its specialized rocky coastal habitats, while climate change intensifies salt spray patterns and storm frequency that affect its delicate thallus structure.
Where does Frayed Ribbon Lichen live?
Frayed Ribbon Lichen 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 Frayed Ribbon Lichen?
The main threats to Frayed Ribbon Lichen 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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