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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
Tundra Swan Cygnus columbianus	LC	winter (2003)	present	A4i

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2004. The most recent assessment (2015) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Wetlands (inland)	good (>90%)	moderate (70–90%)	moderate

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Invasive and other problematic species and genes	happe­ning now	most of popul­ation/area (50–90%)	slow decline (1–10% over 3 gener­ations)	high

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 compre­hensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species	Some limited conservation initiatives are in place	medium

Year	Protected Area	Designation (management category)	% coverage of IBA
1950	Sado-Yahiko-Yoneyama	国定公園 (V)	100
1971	Niigata kakuda	都道府県指定鳥獣保護区 (IV)	14
1981	Sakata	国指定鳥獣保護区 (IV)	100

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

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake Sakata (Japan). Downloaded from https://datazone.birdlife.org/site/factsheet/lake-sakata-iba-japan on 28/12/2024.