JP079
Miyakejima island


IBA Criteria

Year of most recent IBA criteria assessment: 2004

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Japanese Woodpigeon Columba janthina NT resident 2004 present A2
Japanese Murrelet Synthliboramphus wumizusume VU breeding 2004 present A1, A4ii
Pleske's Grasshopper-warbler Locustella pleskei VU breeding 2004 present A1
Ijima's Leaf-warbler Phylloscopus ijimae VU breeding 2004 present A1, A2
Izu Thrush Turdus celaenops VU resident 2004 present A1, A2

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here


IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2015 high not assessed high
Was the whole site covered? Yes State assessed by unset
Accuracy of information -

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Climate change and severe weather other impacts likely in long term (beyond 4 years) majority/most of area/population (50-90%) slow but significant deterioration medium
Geological events volcanic eruptions likely in long term (beyond 4 years) majority/most of area/population (50-90%) moderate to rapid deterioration medium
Invasive and other problematic species and genes invasive non-native/alien species/diseases - named species happening now majority/most of area/population (50-90%) moderate to rapid deterioration high
Pollution garbage & solid waste happening now some of area/population (10-49%) slow but significant deterioration medium

Condition of habitat (state)
Habitat Habitat Detail Reference Area (ha) Actual Area (ha) % of habitat remaining % of carrying capacity (overall) Result
Forest 0 0 - moderate (70-90%) unfavourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Whole area of site (>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 The conservation measures needed for the site are being comprehensively and effectively implemented high
For more information about IBA monitoring please click here

IBA Protection

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Tsubota tairoike 都道府県指定鳥獣保護区 82 protected area contained by site 0
Onoharajima 国指定鳥獣保護区 546 protected area is adjacent to site 0
Miyakejima togayama 都道府県指定鳥獣保護区 185 protected area contained by site 0
Miyakejima oyama 都道府県指定鳥獣保護区 317 protected area contained by site 0
Fuji hakone izu 国立公園 166,767 protected area overlaps with site 5,550
Common fishery right area(Tokyo) 共同漁業権区域 102,714 protected area is adjacent to site 0

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Forest -
Coastline Rock stacks and islands -
For further information about the habitat classification please click here.


Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Miyakejima island. Downloaded from http://www.birdlife.org on 24/09/2020.