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 |
|---|---|---|---|---|
| Swinhoe's Rail Coturnicops exquisitus | LC | breeding (2003) | present | A1 |
| Schrenck's Bittern Ixobrychus eurhythmus | LC | breeding (2003) | present | A3 |
| 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 |
| Marine Coastal/Supratidal | 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 | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Energy production and mining | happening now | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Agricultural expansion and intensification | happening now | some of population/area (10–49%) | rapid decline (>30% over 3 generations) | high |
| Invasive and other problematic species and genes | happening now | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | high |
| Pollution | happening now | some of population/area (10–49%) | 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 |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Little/none of area covered (<10%) | A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species | 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 |
|---|---|---|---|
| 2005 | Hotokenuma | 国指定鳥獣保護区 (IV) | 4 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Coastal/Supratidal | major (>10) | |
| Marine Intertidal | minor (<10) |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Hotokenuma, Lake Ogawara and nearby lakes (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/hotokenuma-lake-ogawara-and-nearby-lakes-iba-japan on 23/12/2024.