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Location Japan, Hokkaido
Central coordinates 141o 41.00' East  45o 6.00' North
IBA criteria A4i
Area 15,000 ha
Altitude 0 - 10m
Year of IBA assessment 2004

Wild Bird Society of Japan

Site description Sarobestugenya marsh is in the Sarobetsugawa river basin. At the beginning of pioneer days, the area had 20,000 ha, and 70% was peatlands. There are many marshes such as Penkenuma marsh, Pankenuma marsh and Kabutonuma, making stop over spots for migrating waterbirds. Sarobestugenya marsh consists of low moors and high moors, so you can study the history of moors by just taking a walk on the boards. During spring migration season, some summer visitors such as Siberian Rubythroat, Stonechat and Yellow Wagtail can be observed in the area. During autumn migration season, 7,000-8,000 Bean Geese stopover, making this a common sight in autumn. Recent breeding of Japanese Cranes suggests that the area still has good habitat for wildlife.

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 

IBA Monitoring

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

Energy production and mining renewable energy likely in long term (beyond 4 years) small area/few individuals (<10%) no or imperceptible deterioration low

Some of site covered (10-49%)  A management plan exists but it is out of date or not comprehensive  Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity  low 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Sarobetsu National Wildlife Special Protected Area 2,560 protected area contained by site 2,560  
Sarobetsu-genya Wetlands of International Importance (Ramsar) 2,560 protected area contained by site 2,560  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland)   -

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

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