• 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
Mallard Anas platyrhynchos	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
No known threats	happe­ning now	whole of popul­ation/area (>90%)	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90%) covered by appropriate conservation designation	A management plan exists, but it is out of date or not compre­hensive	Unknown	low

Year	Protected Area	Designation (management category)	% coverage of IBA
-	Lakes Oyama Kamiike and Shimoike Prefectural National Park	Other (-)	-
-	Lakes Oyama Kamiike and Shimoike Wildlife Protection Area (Local)	Other (-)	-
1948	Shonai kaihin	都道府県立自然公園 (V)	90
1984	Takadateyama	都道府県指定鳥獣保護区 (IV)	93
2008	Oyama kamiike-Shimoike	国指定鳥獣保護区 (IV)	4

Habitat	% of IBA	Habitat detail
Wetlands (inland)	-	Freshwater lakes and pools

---

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lakes Oyama Kamiike and Shimoike (Japan). Downloaded from https://datazone.birdlife.org/site/factsheet/lakes-oyama-kamiike-and-shimoike-iba-japan on 26/12/2024.