JP063
Mounts Asahidake and Gassan


IBA Justification

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
Copper Pheasant Syrmaticus soemmerringii NT resident (2003) present A3
Mandarin Duck Aix galericulata LC breeding (2003) present A3
Eastern Crowned Warbler Phylloscopus coronatus LC breeding (2003) present A3
Asian Stubtail Urosphena squameiceps LC breeding (2003) present A3
Japanese Thrush Turdus cardis LC breeding (2003) present A3
Brown-headed Thrush Turdus chrysolaus LC breeding (2003) present A3
Blue-and-white Flycatcher Cyanoptila cyanomelana LC breeding (2003) present A3
Narcissus Flycatcher Ficedula narcissina LC breeding (2003) present A3
Grey Bunting Emberiza variabilis LC breeding (2003) present A3

IBA Conservation

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 not assessed low medium
Whole site assessed? State assessed by Accuracy of information
no unset -

Pressure (threats to the trigger species and/or their habitats)
Threat Timing Scope Severity Result
Biological resource use likely in long term (>4 years) few indivi­duals/small area (<10%) slow decline (1–10% over 3 gener­ations) low
Climate change and severe weather likely in long term (>4 years) few indivi­duals/small area (<10%) slow decline (1–10% over 3 gener­ations) low
Energy production and mining likely in long term (>4 years) few indivi­duals/small area (<10%) slow decline (1–10% over 3 gener­ations) low
Human intrusions and disturbance likely in long term (>4 years) few indivi­duals/small area (<10%) slow decline (1–10% over 3 gener­ations) low
Pollution likely in long term (>4 years) few indivi­duals/small area (<10%) slow decline (1–10% over 3 gener­ations) low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation Planning Action Result
Whole area (>90%) covered by appropriate conservation designation A compre­hensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species Some limited conservation initiatives are in place medium

IBA Protection

Year Protected Area Designation (management category) % coverage of IBA
1950 Bandai asahi 国立公園 (II) 98
1964 Miomote 都道府県指定鳥獣保護区 (IV) 1
1964 Takanosu 都道府県指定鳥獣保護区 (IV) <1
1975 Nurumata sawa-Nogawa 都道府県自然環境保全地域 (V) 2
1975 Imagami yama 都道府県自然環境保全地域 (V) <1
1976 Narumi san 都道府県自然環境保全地域 (V) <1
1976 Suzuga taki 都道府県自然環境保全地域 (V) <1
1979 Kijiyama-nogawa 都道府県指定鳥獣保護区 (IV) 1
1980 Mayasan 都道府県指定鳥獣保護区 (IV) 1
1980 Imagami 都道府県指定鳥獣保護区 (IV) <1
1983 Shibakura 都道府県指定鳥獣保護区 (IV) 1
1983 Daizumoriyama 都道府県指定鳥獣保護区 (IV) <1
1983 Gassan 都道府県指定鳥獣保護区 (IV) <1
1984 Otori asahi 国指定鳥獣保護区 (IV) 20
1985 Tamugimata 都道府県指定鳥獣保護区 (IV) 3
1985 Okura 都道府県指定鳥獣保護区 (IV) 1
1997 Tachiyazawa 都道府県指定鳥獣保護区 (IV) 1
1997 Hayama 都道府県指定鳥獣保護区 (IV) 1
2003 Asahi Mountain Range 森林生態系保護地域 (Ib) 37
2004 Chokai-Asahi and Iide-Azuma 緑の回廊 (V) 7
2007 Aizometoge 都道府県指定鳥獣保護区 (IV) 1

Habitats

Habitat % of IBA Habitat detail
Forest -


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Mounts Asahidake and Gassan (Japan). Downloaded from https://datazone.birdlife.org/site/factsheet/mounts-asahidake-and-gassan-iba-japan on 23/12/2024.