JP085
Chichijima islands


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
Bonin Woodpigeon Columba versicolor EX resident 1889 present A2
Bonin White-eye Apalopteron familiare NT resident 2004 present 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 medium
Was the whole site covered? No State assessed by unset
Accuracy of information -

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Biological resource use fishing & harvesting aquatic resources - intentional use: subsistence/sml scale happening now some of area/population (10-49%) slow but significant deterioration medium
Biological resource use fishing & harvesting aquatic resources - motivation unknown/unrecorded likely in long term (beyond 4 years) majority/most of area/population (50-90%) very rapid to severe deterioration high
Geological events earthquakes/tsunamis likely in short term (within 4 years) whole area/population (>90%) moderate to rapid deterioration high
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 industrial & military effluents - type unknown/unrecorded likely in long term (beyond 4 years) some of area/population (10-49%) slow but significant deterioration medium
Transportation and service corridors flight paths likely in long term (beyond 4 years) small area/few individuals (<10%) very rapid to severe deterioration low

Condition of habitat (state)
Habitat Habitat Detail Reference Area (ha) Actual Area (ha) % of habitat remaining % of carrying capacity (overall) Result
Forest 0 0 - poor (40-69%) very unfavourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Whole area of site (>90%) covered by appropriate conservation designation No management planning has taken place The conservation measures needed for the site are being comprehensively and effectively implemented medium
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)
Ogasawara Islands World Heritage Site (natural or mixed) 7,939 protected area overlaps with site 2,658
Ogasawara Islands 森林生態系保護地域 5,580 protected area overlaps with site 0
Ogasawara gunto 国指定鳥獣保護区 20,058 protected area overlaps with site 3,862
Ogasawara 国立公園 127,978 protected area overlaps with site 3,862
Common fishery right area(Tokyo) 共同漁業権区域 102,714 protected area overlaps with site 0

Habitats

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


Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Chichijima islands. Downloaded from http://www.birdlife.org on 27/09/2020.