rotklubba
VU

rotklubba

Sclerophora pallida

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Sclerophora_pallida

Overview

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

Sclerophora pallida faces severe decline due to the loss of old-growth forests containing the ancient trees and decaying wood substrates essential for its survival. Air pollution, particularly nitrogen deposition and acid rain, degrades the specific bark chemistry this lichen requires for attachment and nutrient absorption. Climate change compounds these pressures by altering moisture regimes and temperature patterns that affect both the lichen and its host trees.

Threat summary

Habitat

This rare lichen species grows exclusively on the bark of old deciduous trees, particularly favoring ancient oaks, maples, and other hardwoods in undisturbed forest environments. It requires specific microclimate conditions with high humidity and minimal air pollution, typically found in mature woodland ecosystems with continuous forest cover.

TERRESTRIAL· major

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Frequently asked questions

Why is rotklubba classified as Vulnerable?
rotklubba 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. Sclerophora pallida faces severe decline due to the loss of old-growth forests containing the ancient trees and decaying wood substrates essential for its survival. Air pollution, particularly nitrogen deposition and acid rain, degrades the specific bark chemistry this lichen requires for attachment and nutrient absorption. Climate change compounds these pressures by altering moisture regimes and temperature patterns that affect both the lichen and its host trees.
Where does rotklubba live?
rotklubba 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 rotklubba?
The main threats to rotklubba 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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