Pteris marquesensis
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
Pteris marquesensis faces severe threats from invasive plant species that outcompete native vegetation and alter forest understory conditions essential for fern survival. Habitat degradation from introduced ungulates, particularly feral pigs and goats, damages the forest floor and root systems. The species' extremely limited range on the Marquesas Islands makes it highly vulnerable to stochastic events and climate-related changes in precipitation patterns.
Habitat
This endemic fern inhabits the understory of native montane forests in the Marquesas Islands, typically growing in shaded, humid conditions on volcanic soils. It occurs in remnant forest patches at elevations where moisture levels remain relatively stable throughout the year.