CR

Cyclophyllum guillauminianum

Declining

Overview

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

Cyclophyllum guillauminianum faces severe threats from habitat destruction due to mining activities and urban development in New Caledonia's ultramafic soils. The species' extremely restricted range makes it particularly vulnerable to localized disturbances, with entire populations at risk from single development projects. Invasive plant species further degrade its specialized habitat, while the small population size increases vulnerability to stochastic events and genetic bottlenecks.

Threat summary

Habitat

This endemic New Caledonian plant occurs exclusively on ultramafic soils in shrubland and low forest formations. It is restricted to specific geological substrates that support unique plant communities adapted to high metal concentrations and nutrient-poor conditions.

Shrubland· major

Conservation measures underway

Site/area protectionSpecies recoveryEx-situ conservationLegislation

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Frequently asked questions

Why is Cyclophyllum guillauminianum classified as Critically Endangered?
Cyclophyllum guillauminianum 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. Cyclophyllum guillauminianum faces severe threats from habitat destruction due to mining activities and urban development in New Caledonia's ultramafic soils. The species' extremely restricted range makes it particularly vulnerable to localized disturbances, with entire populations at risk from single development projects. Invasive plant species further degrade its specialized habitat, while the small population size increases vulnerability to stochastic events and genetic bottlenecks.
Where does Cyclophyllum guillauminianum live?
Cyclophyllum guillauminianum occurs in New Caledonia. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Cyclophyllum guillauminianum?
The main threats to Cyclophyllum guillauminianum 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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