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Location Japan, Hokkaido
Central coordinates 145o 4.00' East  43o 3.00' North
IBA criteria A1, A3
Area 9,300 ha
Altitude 0 - 10m
Year of IBA assessment 2004

Wild Bird Society of Japan

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Steller's Sea-eagle Haliaeetus pelagicus winter  2004  present  A1  Vulnerable 
Red-crowned Crane Grus japonensis resident  2004  present  A1  Endangered 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Kiritappu Marsh Reserve 2,905 protected area contained by site 2,905  
Kiritappu-shitsugen Wetlands of International Importance (Ramsar) 2,504 protected area contained by site 2,504  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Coastal lagoons; Permanent swamps; Salt marshes  -
Coastline   -

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Kiritappu marsh, Biwase bay. Downloaded from on 21/09/2014

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