Data Zone
The site was identified as important 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 |
|---|---|---|---|---|---|
| Tundra Swan Cygnus columbianus | LC | winter | 2003 | present | A4i |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2004) may differ.
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 | near favourable | high | medium |
| 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 |
| Wetlands (inland) | good (> 90%) | moderate (70-90%) | near favourable |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Invasive and other problematic species and genes | happening now | majority/most of area/population (50-90%) | slow but significant deterioration | high |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Protected areas | Management plan | Other action | Result |
| Whole area of site (>90%) covered by appropriate conservation designation | A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species | Some limited conservation initiatives are in place | medium |
| Year | Protected Area | Designation | % overlap with IBA |
|---|---|---|---|
| 1950 | Sado-Yahiko-Yoneyama | 国定公園 | 100 |
| 1971 | Niigata kakuda | 都道府県指定鳥獣保護区 | 14 |
| 1981 | Sakata | 国指定鳥獣保護区 | 100 |
| 1996 | Sakata | Ramsar Site, Wetland of International Importance | 30 |
| Habitat1 | Habitat detail | % of IBA |
|---|---|---|
| Wetlands (inland) | Freshwater lakes and pools | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake Sakata (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/lake-sakata-iba-japan on 24/11/2024.