EN

Gymnoderma insulare

Declining

Overview

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

Gymnoderma insulare faces severe threats from habitat destruction due to urban development and agricultural expansion across its limited island range. The species' restricted distribution makes it particularly vulnerable to environmental changes, with small population sizes increasing extinction risk from stochastic events. Invasive plant species compete for suitable substrates, while climate change alters the humid conditions essential for this lichen's survival.

Threat summary

Habitat

This endemic lichen species inhabits humid coastal forests and woodland areas on volcanic substrates. It typically grows on tree bark and rock surfaces in shaded, moisture-rich environments at low to moderate elevations.

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Frequently asked questions

Why is Gymnoderma insulare classified as Endangered?
Gymnoderma insulare 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. Gymnoderma insulare faces severe threats from habitat destruction due to urban development and agricultural expansion across its limited island range. The species' restricted distribution makes it particularly vulnerable to environmental changes, with small population sizes increasing extinction risk from stochastic events. Invasive plant species compete for suitable substrates, while climate change alters the humid conditions essential for this lichen's survival.
Where does Gymnoderma insulare live?
Gymnoderma insulare occurs in Japan, and Taiwan. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Gymnoderma insulare?
The main threats to Gymnoderma insulare 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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