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 |
---|---|---|---|---|
Common Teal Anas crecca | LC | winter (2003) | present | A4i |
Pacific Golden Plover Pluvialis fulva | LC | passage (2003) | present | A4i |
Little Ringed Plover Charadrius dubius | LC | breeding (2003) | present | A4i |
Marsh Grassbird Helopsaltes pryeri | NT | breeding (2003) | present | A1, A3 |
Ochre-rumped Bunting Emberiza yessoensis | NT | 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 | high | 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 |
Wetlands (inland) | good (>90%) | moderate (70–90%) | moderate |
Pressure (threats to the trigger species and/or their habitats) | ||||
---|---|---|---|---|
Threat | Timing | Scope | Severity | Result |
Biological resource use | happening now | some of population/area (10–49%) | rapid decline (>30% over 3 generations) | high |
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 plan exists, but the management planning process has begun | Some limited conservation initiatives are in place | low |
Year | Protected Area | Designation (management category) | % coverage of IBA |
---|---|---|---|
1956 | Edozaki | 都道府県指定鳥獣保護区 (IV) | 2 |
1959 | Suigo-Tsukuba | 国定公園 (V) | 100 |
1960 | Ukishima | 都道府県指定鳥獣保護区 (IV) | <1 |
1962 | Ushibori chisaki | 都道府県指定鳥獣保護区 (IV) | 6 |
1966 | Ayumisaki | 都道府県指定鳥獣保護区 (IV) | 3 |
1972 | Kasumigaura | 都道府県指定鳥獣保護区 (IV) | 27 |
1981 | Takahamairi | 都道府県指定鳥獣保護区 (IV) | 2 |
Habitat | % of IBA | Habitat detail |
---|---|---|
Wetlands (inland) | - | Freshwater lakes and pools; Permanent swamps |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake Kasumigaura, Ukisima (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/lake-kasumigaura-ukisima-iba-japan on 23/12/2024.