EN

Rinodina disjuncta

Local name: trønderringlav

Unknown

Overview

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

Trønderringlav faces severe threats from air pollution, particularly nitrogen deposition and sulfur compounds that alter the chemical composition of its bark substrates. Urban development and forest management practices that favor younger tree stands reduce the availability of suitable old-growth habitats with the specific bark chemistry this lichen requires. Climate change may be shifting the optimal conditions for this species northward, potentially fragmenting its already limited range in central Norway.

Threat summary

Habitat

This lichen species grows exclusively on the bark of old deciduous trees, particularly in mature forest stands with specific microclimate conditions. It requires trees with alkaline bark chemistry and is typically found in undisturbed woodland areas of central Norway.

Frequently asked questions

Why is trønderringlav classified as Endangered?
trønderringlav 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. Trønderringlav faces severe threats from air pollution, particularly nitrogen deposition and sulfur compounds that alter the chemical composition of its bark substrates. Urban development and forest management practices that favor younger tree stands reduce the availability of suitable old-growth habitats with the specific bark chemistry this lichen requires. Climate change may be shifting the optimal conditions for this species northward, potentially fragmenting its already limited range in central Norway.
Where does trønderringlav live?
trønderringlav 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 trønderringlav?
The main threats to trønderringlav 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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