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) | present | A4i |
| Greater White-fronted Goose Anser albifrons | LC | winter (2003) | present | 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 (2015) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2015 | good | low | 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 |
| Artificial/Terrestrial | good (>90%) | good (>90%) | good |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Natural system modifications | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Climate change and severe weather | likely in long term (>4 years) | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Pollution | past (and unlikely to return) and no longer limiting | whole of population/area (>90%) | 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 |
| Some of area covered (10–49%) | Unknown | Some limited conservation initiatives are in place | low |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1973 | Izunuma-uchinuma | 都道府県自然環境保全地域 (V) | 27 |
| 1982 | Izunuma | 国指定鳥獣保護区 (IV) | 57 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Artificial/Terrestrial | - | Rice paddies |
| Wetlands (inland) | - | Freshwater lakes and pools |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Izunuma and nearby lakes (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/izunuma-and-nearby-lakes-iba-japan on 23/12/2024.