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Location Japan, Akita
Central coordinates 140o 0.00' East  40o 0.00' North
IBA criteria A1, A3, A4i, A4iii
Area 20,000 ha
Altitude 0 - 5m
Year of IBA assessment 2004

Wild Bird Society of Japan

Site description The site is located in the northwest of Akita Prefecture, covering the reclaimed dry lands in the center of 15,640 ha, and lake of 1,560 ha. which has been blocked from the Sea of Japan by water gates, making it a freshwater lake. Most reclaimed lands are farmlands, with windbreak forests, drainage canals and net-like roads. Farmlands are mainly paddy fields, and pastures, agricultural fields and fallow lands.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Bean Goose Anser fabalis winter  2004  present  A4i  Least Concern 
Greater White-fronted Goose Anser albifrons winter  2004  present  A4i  Least Concern 
Tundra Swan Cygnus columbianus winter  2004  present  A4i  Least Concern 
Schrenck's Bittern Ixobrychus eurhythmus breeding  2004  present  A3  Least Concern 
Japanese Night-heron Gorsachius goisagi breeding  2004  present  A1, A3  Endangered 
Grey-faced Buzzard Butastur indicus breeding  2004  present  A3  Least Concern 
Long-billed Plover Charadrius placidus breeding  2004  present  A3  Least Concern 
Marsh Grassbird Locustella pryeri breeding  2004  present  A1, A3  Near Threatened 
A4iii Species group - waterbirds winter  2004  min 20,000 individuals  A4iii   

IBA Monitoring

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

Energy production and mining renewable energy past (and unlikely to return) and no longer limiting majority/most of area/population (50-90%) moderate to rapid deterioration low

Little/none of site covered (<10%)  Unknown  Unknown  negligible 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Ogata Sougen National Wildlife Special Protected Area 135 protected area contained by site 135  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Coastal lagoons  -
Artificial - terrestrial Abandoned farmland, disturbed ground; Rice paddies  -

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Hachirogata. Downloaded from on 21/10/2016

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