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Location Japan, Hokkaido
Central coordinates 141o 19.00' East  44o 25.00' North
IBA criteria A4i, A4ii, A4iii
Area 546 ha
Altitude 0 - 85m
Year of IBA assessment 2004

Wild Bird Society of Japan

Site description The site is located 28 km off shore from Haboro Town, and has a perimeter of 12 km. Eight species of sea birds breed on the vertical sea cliff on the west side of the island. The area consists of grassland with Calamagrostis arundinacea var. brachytricha, Reynoutria sachalinensis and Sasa sebanebsis, and woodlands with Plellodendron amurense and Acer mono. Though the climate is mild year round because of the Tsushima Current, it is always windy, especially in the winter, when very strong seasonal winds blow.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Black-tailed Gull Larus crassirostris resident  2004  present  A4i  Least Concern 
Slaty-backed Gull Larus schistisagus resident  2004  present  A4i  Least Concern 
Rhinoceros Auklet Cerorhinca monocerata breeding  2004  present  A4ii  Least Concern 
A4iii Species group - seabirds breeding  2004  min 10,000 breeding pairs  A4iii   

IBA Monitoring

2010 medium not assessed medium
Poor - based on little, or potentially unreliable/unrepresentative, data

Agriculture and aquaculture marine and freshwater aquaculture - subsistence/artisinal aquaculture likely in long term (beyond 4 years) majority/most of area/population (50-90%) slow but significant deterioration medium

Whole area of site (>90%) covered by appropriate conservation designation  A management plan exists but it is out of date or not comprehensive  Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity  medium 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Teurito National Wildlife Special Protected Area 546 is identical to site 546  


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

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Teuri island. Downloaded from on 23/10/2016

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