Iwakigawa river, Lake Jusanko (Japan) - BirdLife IBA factsheet

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Iwakigawa river, Lake Jusanko

Current view: Data table and detailed info

IBA Justification

The site was identified as important 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 List¹	Season	Year(s)	Size	IBA criteria
Marsh Grassbird Helopsaltes pryeri	NT	breeding	2003	present	A1, A3
Ochre-rumped Bunting Emberiza yessoensis	NT	breeding	2003	present	A3

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2004) may differ.

IBA Conservation

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.

IBA conservation assessment
Year of assessment	State	Pressure	Response
2015	favourable	low	low
Whole site assessed?	State assessed by	Accuracy of information
yes	habitat	-

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Marine Coastal/Supratidal	good (> 90%)	good (> 90%)	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Energy production and mining	likely in short term (within 4 years)	small area/few individuals (<10%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	No management planning has taken place	Some limited conservation initiatives are in place	low

IBA Protection

Year	Protected Area	Designation	% overlap with IBA
1965	Jusanko	都道府県指定鳥獣保護区	92
1975	Tsugaru	国定公園	86
1986	Iwakigawa kako	都道府県指定鳥獣保護区	9

Habitats

Habitat¹	Habitat detail	% of IBA
Marine Coastal/Supratidal		major (>10)
Marine Intertidal		major (>10)
Marine Neritic		major (>10)

1. IUCN Habitat classification.

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Iwakigawa river, Lake Jusanko (Japan). Downloaded from https://datazone.birdlife.org/site/factsheet/iwakigawa-river-lake-jusanko-iba-japan on 22/11/2024.