VU

Byssomerulius albostramineus

Local name: laxgröppa

Unknown

Overview

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

Byssomerulius albostramineus faces severe decline due to the loss of old-growth coniferous forests, particularly those containing large fallen logs and decaying wood substrates essential for its survival. Intensive forestry practices that remove dead wood and shorten rotation cycles have eliminated much of its preferred habitat across Scandinavia. Climate change compounds these pressures by altering forest moisture regimes and accelerating decomposition rates of the specific wood types this fungus requires.

Threat summary

Habitat

This rare polypore fungus inhabits old-growth coniferous forests, growing exclusively on decaying logs and stumps of spruce and pine trees. It requires specific moisture conditions and wood decay stages found only in undisturbed forest ecosystems with abundant coarse woody debris.

TERRESTRIAL· major

Other threatened species in Irpicaceae

VU

prinsessticka

Gloeoporus pannocinctus

Unknown

Frequently asked questions

Why is laxgröppa classified as Vulnerable?
laxgröppa 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. Byssomerulius albostramineus faces severe decline due to the loss of old-growth coniferous forests, particularly those containing large fallen logs and decaying wood substrates essential for its survival. Intensive forestry practices that remove dead wood and shorten rotation cycles have eliminated much of its preferred habitat across Scandinavia. Climate change compounds these pressures by altering forest moisture regimes and accelerating decomposition rates of the specific wood types this fungus requires.
Where does laxgröppa live?
laxgröppa 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 laxgröppa?
The main threats to laxgröppa 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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