Data Zone
Country/territory: Japan
IBA criteria met: A1, A2 (2004)
For more information about IBA criteria, please click here
Area: 2,650 hectares (26.50 km2)
| IBA conservation status | |||
|---|---|---|---|
| Year of assessment (most recent) | State (condition) | Pressure (threat) | Response (action) |
| 2015 | very poor | high | low |
| For more information about IBA monitoring, please click here | |||
Site description (2007 baseline)
Hahajimaretto islands are located 1,050 km south of Tokyo metropolitan area. It consists of Hahajima, Mukojima, Hirashima, Anejima, Imotojima, Meijima and others. Hahajima, the largest island, is about 20.21 km, the highest point is Chibusayama at about 463 m high. The island has a perimeter of about 58 km, and most are steep cliffs. Although main islands had once been settled before the World War II, all islands became uninhabited by the time of the reversion of Ogasawara islands to Japan in 1968. With this history, lost forests by the plantation have been rather recovered. However, Bischofia javanica, which was planted for firewood before the war is an invasive species competing with native vegetation since 1980, so the AKAGI (Bischofia javanica) extermination project has been going on.
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Hahajima islands (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/hahajima-islands-iba-japan on 23/12/2024.