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Location Japan, Tokyo
Central coordinates 140o 52.60' East  27o 14.70' North
IBA criteria A4i
Area 25 ha
Altitude 0 - 25m
Year of IBA assessment 2004

Wild Bird Society of Japan

Site description Nishinoshima is an uninhabited volcanic island located at about 130 km to the west of Chichijima island, and consists of the old island, the new island and the gravel ground which connected both islands by the explosion in 1973. The site is a breeding site for many seabirds.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Greater Crested Tern Thalasseus bergii resident  2004  present  A4i  Least Concern 

IBA Monitoring

2014 high not assessed low
Medium - based upon reliable but incomplete / partially representative data

Geological events volcanic eruptions happening now some of area/population (10-49%) moderate to rapid deterioration high

Whole area of site (>90%) covered by appropriate conservation designation  No management planning has taken place  Very little or no conservation action taking place  low 


IUCN habitat Habitat detail Extent (% of site)
Coastline Sea cliffs and rocky shores  -
Grassland   -

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Recommended citation  BirdLife International (2015) Important Bird and Biodiversity Area factsheet: Nishinoshima island. Downloaded from on 01/12/2015

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