Truncated Dimple Lichen
CR

Truncated Dimple Lichen

Gyalecta truncigena

Unknown

Photo: Photo: (c) Carl-Adam Wegenschimmel, some rights reserved (CC BY-NC), uploaded by Carl-Adam Wegenschimmel

Overview

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

Truncated Dimple Lichen faces severe threats from air pollution and acid rain, which directly damage its sensitive thallus and disrupt its photosynthetic processes. Habitat loss through deforestation and urban development has eliminated many of its specialized microhabitats, while climate change is altering the precise moisture and temperature conditions this species requires for survival.

Threat summary

Habitat

This lichen species typically grows on the bark of mature deciduous trees in old-growth and semi-natural forests, particularly favoring smooth-barked species in humid, sheltered locations. It requires stable microclimatic conditions with consistent moisture levels and minimal air pollution exposure.

TERRESTRIAL· major

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Frequently asked questions

Why is Truncated Dimple Lichen classified as Critically Endangered?
Truncated Dimple Lichen 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. Truncated Dimple Lichen faces severe threats from air pollution and acid rain, which directly damage its sensitive thallus and disrupt its photosynthetic processes. Habitat loss through deforestation and urban development has eliminated many of its specialized microhabitats, while climate change is altering the precise moisture and temperature conditions this species requires for survival.
Where does Truncated Dimple Lichen live?
Truncated Dimple 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 Truncated Dimple Lichen?
The main threats to Truncated Dimple 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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