Data Zone
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 |
|---|---|---|---|---|
| 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 |
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 |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 2003 | Common fishery right area(Saga) | 共同漁業権区域 (VI) | 84 |
| 2003 | Common fishery right area(Fukuoka) | 共同漁業権区域 (VI) | 16 |
| 2003 | Kashima shingomori | 都道府県指定鳥獣保護区 (IV) | <1 |
| 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 23/12/2024.