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 |
|---|---|---|---|---|
| Tundra Swan Cygnus columbianus | LC | passage (2003) | present | A4i |
| Bean Goose Anser fabalis | LC | winter (2003) | present | A4i |
| Greater White-fronted Goose Anser albifrons | LC | passage (2003) | present | A4i |
| Latham's Snipe Gallinago hardwickii | NT | breeding (2003) | present | 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 | poor | 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 |
| Artificial/Terrestrial | good (>90%) | poor (40–69%) | poor |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Energy production and mining | happening now | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Invasive and other problematic species and genes | happening now | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Residential and commercial development | happening now | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Transportation and service corridors | happening now | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Human intrusions and disturbance | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Geological events | likely in long term (>4 years) | whole of population/area (>90%) | slow decline (1–10% over 3 generations) | medium |
| Climate change and severe weather | 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%) | A management plan exists, but it is out of date or not comprehensive | 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 |
|---|---|---|---|
| 1982 | Utonaiko | 国指定鳥獣保護区 (IV) | 7 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Artificial/Terrestrial | - | Rice paddies; Forestry and agro-industrial plantations |
| Wetlands (inland) | - | Freshwater lakes and pools; Permanent swamps |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake Utonai, Yufutu plain (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/lake-utonai-yufutu-plain-iba-japan on 26/12/2024.