JP140
Inner Ariake bay


IBA Justification

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 List1 Season Year(s) Size IBA criteria
Grey Plover Pluvialis squatarola VU passage 2003 present A4i
Whimbrel Numenius phaeopus LC passage 2003 present A4i
Dunlin Calidris alpina NT winter 2003 present A4i
Common Greenshank Tringa nebularia LC winter 2003 present A4i
Saunders's Gull Saundersilarus saundersi VU winter 2003 present A1, 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 moderate medium low
Whole site assessed? State assessed by Accuracy of information
no habitat -

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

Pressure (threats to the trigger species and/or their habitats)
Threat Timing Scope Severity Result
Human intrusions and disturbance likely in long term (>4 years) some of popul­ation/area (10–49%) moderate decline (10–30% over 3 gener­ations) medium
Pollution likely in long term (>4 years) some of popul­ation/area (10–49%) slow decline (1–10% over 3 gener­ations) medium

Response (conservation actions taken for the trigger species and/or their habitats)
Designation Planning Action Result
Little/none of area covered (<10%) No management planning has taken place Substantive conservation measures are being implemented, but these are not comprehensive and are limited by resources and capacity low

IBA Protection

Year Protected Area Designation % overlap with IBA
2003 Common fishery right area(Saga) 共同漁業権区域 84
2003 Common fishery right area(Fukuoka) 共同漁業権区域 16
2003 Kashima shingomori 都道府県指定鳥獣保護区 <1
2015 Higashiyoka-higata Ramsar Site, Wetland of International Importance 1
2015 Hizen Kashima-higata Ramsar Site, Wetland of International Importance <1

Habitats

Habitat % of IBA Habitat detail
Marine Intertidal major (>10)
Marine Neritic major (>10)


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Inner Ariake bay (Japan). Downloaded from https://datazone.birdlife.org/site/factsheet/inner-ariake-bay-iba-japan on 03/12/2024.