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Location Japan, Ishikawa
Central coordinates 136o 54.00' East  37o 36.00' North
IBA criteria A1
Area 24 ha
Altitude 0 - 62m
Year of IBA assessment 2004

Wild Bird Society of Japan

Site description The site is located about 20 km off the north of Wajima City, Ishikawa Prefecture. It is divided into two islet groups, the northern group (Ohshima, Karimatajima and Tatsujima) and the southern group (Aramikojima, Eboshijima, Mikuriyajima and Akashima). All the islets are composed of volcanic rocks, most of which are of andesite and the rest are of tuff-breccia. The biggest islet Ohshima is 1km around having the land area of 12.6 ha and the highest point of the islet is 62 m above the sea level. Other six islets are smaller in size with almost perpendicular cliffs of about 40m in height from the sea. On these islets other than Karimatajima, the areas 20 m above the sea are covered with grasses.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Japanese Murrelet Synthliboramphus wumizusume breeding  2004  present  A1  Vulnerable 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Nanatsujima National Wildlife Special Protected Area 24 is identical to site 24  


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

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Nanatsujima islets. Downloaded from on 24/10/2016

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