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 |
|---|---|---|---|---|---|
| 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 individuals | A4iii |
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 | favourable | 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%) | favourable |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Climate change and severe weather | likely in long term (beyond 4 years) | small area/few individuals (<10%) | no or imperceptible deterioration | low |
| Natural system modifications | happening now | small area/few individuals (<10%) | no or imperceptible deterioration | low |
| Pollution | past (and unlikely to return) and no longer limiting | whole area/population (>90%) | no or imperceptible deterioration | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Protected areas | Management plan | Other action | Result |
| Some of site covered (10-49%) | Unknown | Some limited conservation initiatives are in place | low |
| Year | Protected Area | Designation | % overlap with IBA |
|---|---|---|---|
| 1973 | Izunuma-uchinuma | 都道府県自然環境保全地域 | 27 |
| 1982 | Izunuma | 国指定鳥獣保護区 | 57 |
| 1985 | Izu-numa & Uchi-numa | Ramsar Site, Wetland of International Importance | 31 |
| Habitat1 | Habitat detail | % of IBA |
|---|---|---|
| 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 23/11/2024.