VU

Archigrammitis marquesensis

Unknown

Overview

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

Archigrammitis marquesensis faces severe pressure from habitat degradation across its limited range in the Marquesas Islands. The species is particularly vulnerable to invasive plant species that alter the understory composition of its native forest habitat, while introduced ungulates damage the forest floor and epiphytic substrates where this fern establishes. Climate change poses an additional threat through altered precipitation patterns that could affect the humid microclimates essential for this moisture-dependent species.

Threat summary

Habitat

This endemic fern inhabits the humid montane forests of the Marquesas Islands, typically growing as an epiphyte or on rocky substrates in shaded understory environments. It requires consistent moisture and is found in areas with high humidity and filtered light conditions characteristic of intact native forest ecosystems.

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EN

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Frequently asked questions

Why is Archigrammitis marquesensis classified as Vulnerable?
Archigrammitis marquesensis 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. Archigrammitis marquesensis faces severe pressure from habitat degradation across its limited range in the Marquesas Islands. The species is particularly vulnerable to invasive plant species that alter the understory composition of its native forest habitat, while introduced ungulates damage the forest floor and epiphytic substrates where this fern establishes. Climate change poses an additional threat through altered precipitation patterns that could affect the humid microclimates essential for this moisture-dependent species.
Where does Archigrammitis marquesensis live?
Archigrammitis marquesensis 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 Archigrammitis marquesensis?
The main threats to Archigrammitis marquesensis 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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