Acer amamiense
CR

Acer amamiense

Unknown

Photo: Photo: (c) Bridelia, all rights reserved, uploaded by Bridelia

Overview

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

Acer amamiense is a maple species restricted to Amami Ōshima and a small number of other Ryukyu Islands in Japan, where it survives in only a handful of fragmented subpopulations within remnant subtropical forest. Its extremely limited range makes it acutely vulnerable to logging, typhoon damage, and small-scale land conversion, while its low overall population size increases the risk of genetic erosion and stochastic extinction events. As a Critically Endangered species with few mature individuals, even localized disturbance to remaining forest patches poses a disproportionate threat to its long-term survival.

Threat summary

Habitat

This species occupies humid subtropical evergreen broadleaf forest at low to mid elevations on the Ryukyu Islands, typically in valley and ravine microhabitats with high moisture retention.

Forest· major

Conservation measures underway

Ex-situ conservation

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Frequently asked questions

Why is Acer amamiense classified as Critically Endangered?
Acer amamiense 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. Acer amamiense is a maple species restricted to Amami Ōshima and a small number of other Ryukyu Islands in Japan, where it survives in only a handful of fragmented subpopulations within remnant subtropical forest. Its extremely limited range makes it acutely vulnerable to logging, typhoon damage, and small-scale land conversion, while its low overall population size increases the risk of genetic erosion and stochastic extinction events. As a Critically Endangered species with few mature individuals, even localized disturbance to remaining forest patches poses a disproportionate threat to its long-term survival.
Where does Acer amamiense live?
Acer amamiense occurs in Japan. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Acer amamiense?
The main threats to Acer amamiense 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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