JP038
Mawarizeki and Sunazawa reservoir


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'):
Species Current IUCN Red List Category Season Year(s) Population estimate at site IBA criteria met
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

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2004).


IBA Conservation

IBA conservation assessment
Year of assessment (most recent) State (condition) Pressure (threat) Response (action)
2015 favourable low negligible
Was the whole site assessed? State assessed by Accuracy of information
yes habitat -

State (condition of the trigger species' habitats)
Habitat Habitat detail Reference area (ha) Actual area (ha) Habitat quantity (% remaining) Habitat quality (carrying capacity) Result
Artificial/Terrestrial 0 0 good (> 90%) good (> 90%) favourable

Pressure (threats to the trigger species and/or their habitats)
Threat level 1 Threat level 2 Timing Scope Severity Result
No known threats 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-area designation Management planning Other conservation action Result
Little/none of site covered (<10%) No management planning has taken place Some limited conservation initiatives are in place negligible
For more information about IBA conservation status, please click here

IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA with IBA (ha)
Sunazawa 都道府県指定鳥獣保護区 41 protected area overlaps with site 0
Mawarizeki 都道府県指定鳥獣保護区 245 protected area overlaps with site 0

Habitats

Habitat (IUCN level 1) Habitat detail Extent (% of site)
Artificial/Terrestrial Rice paddies -
Wetlands (inland) Artificial wetlands -
For more information about the IUCN Habitat classification, please click here.


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Mawarizeki and Sunazawa reservoir. Downloaded from https://datazone.birdlife.org/site/factsheet/mawarizeki-and-sunazawa-reservoir-iba-japan on 04/03/2024.