Mawarizeki and Sunazawa reservoir (Japan)

JP038

Mawarizeki and Sunazawa reservoir

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
Tundra Swan Cygnus columbianus	LC	passage	2003	present	A4i
Bean Goose Anser fabalis	LC	passage	2003	present	A4i
Greater White-fronted Goose Anser albifrons	LC	passage	2003	present	A4i
Northern Pintail Anas acuta	LC	passage	2003	present	A4i

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	negligible
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
Artificial/Terrestrial	good (> 90%)	good (> 90%)	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
No known threats	past (and unlikely to return) and no longer limiting	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
Little/none of site covered (<10%)	No management planning has taken place	Some limited conservation initiatives are in place	negligible

IBA Protection

Year	Protected Area	Designation	% overlap with IBA
1986	Mawarizeki	都道府県指定鳥獣保護区	43
1990	Sunazawa	都道府県指定鳥獣保護区	5

Habitats

Habitat¹	Habitat detail	% of IBA
Artificial/Terrestrial	Rice paddies	-
Wetlands (inland)	Artificial wetlands	-

1. IUCN Habitat classification.

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Mawarizeki and Sunazawa reservoir (Japan). Downloaded from https://datazone.birdlife.org/site/factsheet/mawarizeki-and-sunazawa-reservoir-iba-japan on 22/11/2024.