EN

Rusty Hook-moss

Scorpidium revolvens

UnknownLCEULCEU

Overview

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

Rusty Hook-moss faces severe decline due to habitat degradation from agricultural intensification and drainage of wetland systems. Climate change poses an additional threat through altered precipitation patterns and increased drought frequency, which directly impacts the moisture-dependent bryophyte communities this species requires. Eutrophication from agricultural runoff has fundamentally changed the nutrient-poor conditions essential for its survival.

Threat summary

Habitat

Rusty Hook-moss inhabits nutrient-poor, calcareous wetlands including fens, wet meadows, and marshy areas with consistent moisture levels. It typically grows in open, low-competition environments where water chemistry remains relatively stable and alkaline.

TERRESTRIAL· major

Other threatened species in Scorpidiaceae

Varnished Hook-mossVU

Varnished Hook-moss

Hamatocaulis vernicosus

Unknown
VU

Hooked Scorpion-moss

Scorpidium scorpioides

Unknown
VU

Intermediate Hook-moss

Scorpidium cossonii

Unknown

Frequently asked questions

Why is Rusty Hook-moss classified as Endangered?
Rusty Hook-moss is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Rusty Hook-moss faces severe decline due to habitat degradation from agricultural intensification and drainage of wetland systems. Climate change poses an additional threat through altered precipitation patterns and increased drought frequency, which directly impacts the moisture-dependent bryophyte communities this species requires. Eutrophication from agricultural runoff has fundamentally changed the nutrient-poor conditions essential for its survival.
Where does Rusty Hook-moss live?
Rusty Hook-moss 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 Rusty Hook-moss?
The main threats to Rusty Hook-moss 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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