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 |
|---|---|---|---|---|
| Whooper Swan Cygnus cygnus | LC | winter (2003) | 5,000 birds | A4i |
| Tundra Swan Cygnus columbianus | LC | winter (2003) | 5,000 birds | A4i |
| Northern Pintail Anas acuta | LC | winter (2003) | present | A4i |
| A4iii Species group - waterbirds | n/a | winter (2003) | min 20,000 birds | A4iii |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2004. The most recent assessment (2010) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2010 | not assessed | low | low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | unset | poor | |
| 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%) | no or slight decline (<1% 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 | Unknown | Unknown | low |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1948 | Shonai kaihin | 都道府県立自然公園 (V) | 37 |
| 1983 | Mogami | Prefectural Wildlife Protection Area (-) | 100 |
| 2003 | Common fishery right area(Yamagata) | 共同漁業権区域 (VI) | 9 |
| 2005 | Mogamigawa kako | 国指定鳥獣保護区 (IV) | 92 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Artificial/Terrestrial | major (>10) | |
| Marine Coastal/Supratidal | major (>10) | |
| Marine Intertidal | major (>10) | |
| Marine Neritic | major (>10) |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Mogamigawa estuary (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/mogamigawa-estuary-iba-japan on 23/12/2024.