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Location Japan, Aichi
Central coordinates 137o 8.00' East  34o 39.00' North
IBA criteria A4i
Area 870 ha
Altitude 0 - 20m
Year of IBA assessment 2004

Wild Bird Society of Japan

Site description The site comprises of muddy flats of sandy mudstones, beaches of sand gravel, the Shimborigawa river basin and saline wetland near the mouth of the river. Seaside plants and peculiar plants adapted to salt marsh environment are seen. In the hinterland there exist ponds for cultivation of eels, farmlands and greenhouses. It is one of the foremost fishing grounds in the Mikawa Bay where laver seaweed is cultivated from winter to spring and clams are caught in spring.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Ruddy Turnstone Arenaria interpres passage  2004  present  A4i  Least Concern 

IBA Monitoring

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

Human intrusions and disturbance recreational activities likely in long term (beyond 4 years) small area/few individuals (<10%) no or imperceptible 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)  
Mikawa Wan Quasi National Park 9,443 protected area contains site 870  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Intertidal mud, sand or salt flats  -

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Ikawazu tidal flat. Downloaded from on 25/10/2016

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