Pseudosagedia borreri
CR

Pseudosagedia borreri

Local name: skånsk porina

Unknown

Photo: Photo: (c) Paul Bowyer, niektoré práva vyhradené (CC BY-NC), uploaded by Paul Bowyer

Overview

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

Skånsk porina faces severe threats from air pollution and acid rain, which degrade the specific bark chemistry required for this lichen's survival. Habitat loss through urbanization and intensive forestry practices in southern Sweden has eliminated many suitable host trees, while climate change alters the delicate moisture and temperature conditions this species requires.

Threat summary

Habitat

This lichen species grows on the bark of deciduous trees, particularly in old-growth and semi-natural woodlands with stable microclimatic conditions. It requires trees with specific bark chemistry and texture, typically found in undisturbed forest environments with consistent humidity levels.

TERRESTRIAL· major

Frequently asked questions

Why is skånsk porina classified as Critically Endangered?
skånsk porina 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. Skånsk porina faces severe threats from air pollution and acid rain, which degrade the specific bark chemistry required for this lichen's survival. Habitat loss through urbanization and intensive forestry practices in southern Sweden has eliminated many suitable host trees, while climate change alters the delicate moisture and temperature conditions this species requires.
Where does skånsk porina live?
skånsk porina 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 skånsk porina?
The main threats to skånsk porina 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.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.