VU

Powdered Speckled Shield Lichen

Punctelia jeckeri

Unknown

Overview

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

Punctelia jeckeri faces severe decline due to air pollution, particularly nitrogen deposition and sulfur compounds that alter the chemical balance of its substrate. Urban expansion and industrial development have eliminated many suitable habitats, while climate change creates increasingly unsuitable microclimatic conditions for this pollution-sensitive lichen species.

Threat summary

Habitat

This foliose lichen grows on the bark of deciduous trees, particularly in areas with clean air and stable microclimatic conditions. It typically occurs in mature forests and well-established parklands where air quality remains relatively unpolluted.

TERRESTRIAL· major

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Frequently asked questions

Why is Powdered Speckled Shield Lichen classified as Vulnerable?
Powdered Speckled Shield 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. Punctelia jeckeri faces severe decline due to air pollution, particularly nitrogen deposition and sulfur compounds that alter the chemical balance of its substrate. Urban expansion and industrial development have eliminated many suitable habitats, while climate change creates increasingly unsuitable microclimatic conditions for this pollution-sensitive lichen species.
Where does Powdered Speckled Shield Lichen live?
Powdered Speckled Shield 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 Powdered Speckled Shield Lichen?
The main threats to Powdered Speckled Shield 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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