VU

Orthotrichum scanicum

UnknownLCEULCEU

Overview

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

Weißhaubiges Goldhaarmoos faces severe decline due to air pollution, particularly nitrogen deposition and sulfur compounds that alter bark chemistry on its host trees. Urban development and intensive forestry practices have eliminated many suitable old-growth deciduous trees, while climate change creates drier conditions that stress this moisture-dependent bryophyte. The species' extremely limited dispersal ability prevents recolonization of restored habitats.

Threat summary

Habitat

This rare moss grows exclusively on the bark of mature deciduous trees, particularly oak, ash, and maple, in humid old-growth forests and well-established parklands. It requires trees with rough, nutrient-rich bark in areas with high air humidity and minimal pollution.

Other threatened species in Orthotrichaceae

EN

Slender Bristle-moss

Orthotrichum tenellum

Unknown
VU

Macromitrium tocaremae

Unknown
VU

Macromitrium attenuatum

Unknown
VU

Orthotric de Roger

Orthotrichum rogeri

Unknown

Frequently asked questions

Why is Orthotrichum scanicum classified as Vulnerable?
Orthotrichum scanicum 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. Weißhaubiges Goldhaarmoos faces severe decline due to air pollution, particularly nitrogen deposition and sulfur compounds that alter bark chemistry on its host trees. Urban development and intensive forestry practices have eliminated many suitable old-growth deciduous trees, while climate change creates drier conditions that stress this moisture-dependent bryophyte. The species' extremely limited dispersal ability prevents recolonization of restored habitats.
Where does Orthotrichum scanicum live?
Orthotrichum scanicum 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 Orthotrichum scanicum?
The main threats to Orthotrichum scanicum 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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