Poa mannii
CR

Poa mannii

Declining

Photo: (c) Smithsonian Institution, National Museum of Natural History, Department of Botany, some rights reserved (CC BY-NC-SA)

Overview

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

Poa mannii faces severe threats from habitat degradation in its restricted high-altitude range. The species is particularly vulnerable to grazing pressure from livestock and invasive plant species that alter the delicate alpine ecosystem structure. Climate change poses an additional threat as warming temperatures force alpine species to migrate to higher elevations, potentially eliminating suitable habitat entirely.

Threat summary

Habitat

Poa mannii is endemic to high-altitude alpine grasslands and rocky slopes, typically found in montane regions above 3,000 meters elevation. The species requires well-drained soils and cool, moist conditions characteristic of alpine meadow ecosystems.

Shrubland· majorRocky areas· major

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Frequently asked questions

Why is Poa mannii classified as Critically Endangered?
Poa mannii 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. Poa mannii faces severe threats from habitat degradation in its restricted high-altitude range. The species is particularly vulnerable to grazing pressure from livestock and invasive plant species that alter the delicate alpine ecosystem structure. Climate change poses an additional threat as warming temperatures force alpine species to migrate to higher elevations, potentially eliminating suitable habitat entirely.
Where does Poa mannii live?
Poa mannii occurs in United States. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Poa mannii?
The main threats to Poa mannii are 8.1, ai-1, ai-2, and ai-3. The full IUCN-classified threat record for this species is detailed on the species page.

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