• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

The site was identified as internationally important for bird conservation in 2004 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Bean Goose Anser fabalis	LC	winter (2003)	present	A4i
Greater White-fronted Goose Anser albifrons	LC	winter (2003)	present	A4i
Northern Pintail Anas acuta	LC	winter (2003)	present	A4i
A4iii Species group - waterbirds	n/a	winter (2003)	min 20,000 birds	A4iii

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2004. The most recent assessment (2010) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Human intrusions and disturbance	likely in long term (>4 years)	few indivi­duals/small area (<10%)	no or slight decline (<1% over 3 gener­ations)	low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Whole area (>90%) covered by appropriate conservation designation	Unknown	Unknown	low

Year	Protected Area	Designation (management category)	% coverage of IBA
-	Otomonuma Wildlife Protection Area (Local)	Other (-)	-
1998	Otomonuma	都道府県指定鳥獣保護区 (IV)	95

Habitat	% of IBA	Habitat detail
Artificial/Terrestrial	-
Wetlands (inland)	-	Artificial wetlands

---

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Otomonuma reservoir (Japan). Downloaded from https://datazone.birdlife.org/site/factsheet/otomonuma-reservoir-iba-japan on 23/12/2024.