Data Zone
Country/territory: Japan
IBA criteria met: A4i, A4ii (2016)
For more information about IBA criteria, please click here
Area: 2,819,620 hectares (28,196.20 km2)
Site description (2012 baseline)
This Marine IBA is identified using seaward extensions around breeding colonies. It originates from the Japan Exclusive Economic Zone (EEZ) and falls within the Pacific, Northwest FAO ocean region. The site covers an area of 28196 km2 and borders the coastline. The depth ranges from 0 to 2636 m, with a mean annual wind speed of 1.88 m/s and mean annual sea surface temperature falls between 15.19 and 17.21 °C.
Key biodiversity
1 species triggers IBA criteria at this Marine IBA. Seaward extensions around breeding colony; Tobishima and Osyakujima islands include key near-colony areas for breeding populations of Black-tailed Gull (LC).
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Awashima, Tobishima and Osyakujima Islands - Marine (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/awashima-tobishima-and-osyakujima-islands--marine-iba-japan on 26/12/2024.