Tobishima and Oshakujima islands (15279)
Japan, Asia
Site overview
KBA status: confirmed
Year of last assessment: 2011
National site name: Tobishima and Oshakujima islands
Central coordinates: Latitude: 39.1833, Longitude: 139.5333
System: marine, terrestrial
Elevation (m): 0 to 70
Area of KBA (km2): 2.80337
Protected area coverage (%): 99.99
KBA classification: Regional
Legacy site: Yes
Site details
Site description: Tobishima islet, located 39 km off the northwest of Sakata port on the Sea of Japan, is an islet with perimeters of around 12 km, composed of terrace plains, coastal lowlands, and abrasion platforms. It is warm due to the Tsushima Current that flows near the islets, Tobishima islet is covered with evergreen broadleaf trees such as Machilus tunbergii.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that was identified using previously established criteria and thresholds for the identification of Important Bird and Biodiversity Areas (IBAs) and for which available data indicate that it does not meet global KBA criteria and thresholds set out in the Global Standard.
Habitats
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Marine Coastal/Supratidal | 100 |
Threats
| Threat level 1 | Threat level 2 | Threat level 3 | Timing |
|---|---|---|---|
| Invasive & other problematic species, genes & diseases | Invasive non-native/alien species/diseases | Named species | Ongoing |
| Climate change & severe weather | Other impacts | Ongoing | |
| Energy production & mining | Renewable energy | Only in the future | |
| Geological events | Earthquakes/tsunamis | Only in the future | |
| Human intrusions & disturbance | Recreational activities | Ongoing | |
| Pollution | Garbage & solid waste | Ongoing | |
| Natural system modifications | Other ecosystem modifications | Ongoing |