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 |
|---|---|---|---|---|
| Common Pochard Aythya ferina | VU | winter (2003) | present | A4i |
| Greater Scaup Aythya marila | LC | winter (2003) | present | A4i |
| Falcated Duck Mareca falcata | LC | winter (2003) | present | A4i |
| Little Tern Sternula albifrons | LC | breeding (1994) | min 1,200 nests | 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 (2010) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2010 | not assessed | medium | very low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | unset | unknown | |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Pollution | likely in long term (>4 years) | most of population/area (50–90%) | 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%) | Unknown | Unknown | very low |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1950 | Hamana ko | 都道府県立自然公園 (V) | 92 |
| 1965 | Shizuoka Prefectural Fisheries Coordination Regulations Article35(1) the second row of the table | 保護水面 (IV) | <1 |
| 1965 | Shizuoka Prefectural Fisheries Coordination Regulations Article35(1) the first row of the table | 保護水面 (IV) | <1 |
| 1968 | Omaezaki enshunada | 都道府県立自然公園 (V) | 4 |
| 1970 | Hosoe ko shuhen | 都道府県指定鳥獣保護区 (IV) | 6 |
| 1971 | Kanzanji | 都道府県指定鳥獣保護区 (IV) | 1 |
| 1972 | Enshunada | 都道府県指定鳥獣保護区 (IV) | 4 |
| 1973 | Matsumigaura | 都道府県指定鳥獣保護区 (IV) | 1 |
| 1979 | Tenryugawa isei enshunada | 都道府県指定鳥獣保護区 (IV) | 9 |
| 1987 | Inohanako | 都道府県指定鳥獣保護区 (IV) | 7 |
| 2003 | Common fishery right area(Shizuoka) | 共同漁業権区域 (VI) | 81 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Coastal/Supratidal | major (>10) | |
| Marine Intertidal | major (>10) |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake Hamanako, Enshunada (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/lake-hamanako-enshunada-iba-japan on 23/12/2024.