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 |
|---|---|---|---|---|
| Red-crowned Crane Grus japonensis | VU | breeding (2003) | present | A1, A3 |
| Latham's Snipe Gallinago hardwickii | NT | breeding (2003) | present | A3 |
| Steller's Sea-eagle Haliaeetus pelagicus | VU | winter (2003) | present | A1 |
| Middendorff's Grasshopper-warbler Helopsaltes ochotensis | LC | breeding (2003) | present | A3 |
| Yellow-breasted Bunting Emberiza aureola | CR | breeding (2003) | present | A3 |
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 | |
| yes | habitat | - | |
| State (condition of the trigger species' habitats) | |||
|---|---|---|---|
| Habitat | Quantity (% remaining) | Quality (% carrying capacity) | Result |
| Marine Coastal/Supratidal | good (>90%) | moderate (70–90%) | moderate |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Geological events | likely in long term (>4 years) | whole of population/area (>90%) | slow decline (1–10% over 3 generations) | medium |
| Transportation and service corridors | likely in long term (>4 years) | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Invasive and other problematic species and genes | happening now | few individuals/small area (<10%) | slow decline (1–10% over 3 generations) | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Whole area (>90%) covered by appropriate conservation designation | 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 |
|---|---|---|---|
| - | Kiritappu Marsh | Reserve (-) | 31 |
| 1955 | Akkeshi | 都道府県立自然公園 (V) | 89 |
| 1976 | Kushiro tobu | 沿岸水産資源開発区域 (VI) | 10 |
| 1993 | Akkeshi-Bekanbeushi-Kiritappu | 国指定鳥獣保護区 (IV) | 42 |
| 2013 | Common fishery right area(Hokkaido) | 共同漁業権区域 (VI) | 10 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Coastal/Supratidal | major (>10) | |
| Marine Intertidal | major (>10) |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Kiritappu marsh, Biwase bay (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/kiritappu-marsh-biwase-bay-iba-japan on 23/12/2024.