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Yaeyama 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
Ryukyu Green-pigeon Treron permagnus LC resident 2004 present A2
Ruddy Turnstone Arenaria interpres LC winter 2004 present A4i
Grey-tailed Tattler Tringa brevipes NT passage 2004 present A4i
Bridled Tern Onychoprion anaethetus LC breeding 2004 present A4i
Roseate Tern Sterna dougallii LC breeding 2004 present A4i
Black-naped Tern Sterna sumatrana LC breeding 2004 present A4i

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? 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 logging & wood harvesting - unintentional effects: subsistence/small scale happening now some of area/population (10-49%) slow but significant deterioration medium
Climate change and severe weather drought likely in short term (within 4 years) whole area/population (>90%) slow but significant deterioration high
Climate change and severe weather storms and floods likely in short term (within 4 years) whole area/population (>90%) slow but significant deterioration high
Energy production and mining mining and quarrying happening now small area/few individuals (<10%) no or imperceptible deterioration low
Energy production and mining renewable energy happening now small area/few individuals (<10%) no or imperceptible deterioration low
Geological events earthquakes/tsunamis likely in long term (beyond 4 years) some of area/population (10-49%) no or imperceptible deterioration low
Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) moderate to rapid deterioration high
Human intrusions and disturbance war, civil unrest and military exercises happening now some of area/population (10-49%) 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 agricultural & forestry effluents - soil erosion, sedimentation happening now some of area/population (10-49%) moderate to rapid deterioration high
Pollution garbage & solid waste happening now majority/most of area/population (50-90%) moderate to rapid deterioration high
Residential and commercial development tourism and recreation areas happening now some of area/population (10-49%) very rapid to severe deterioration high
Transportation and service corridors roads and railroads happening now some of area/population (10-49%) moderate to rapid deterioration high

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 Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity 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)
Yonehara ishigakinini 生息地等保護区 9 protected area contained by site 0
Yonaguni 国指定鳥獣保護区 1,040 protected area contained by site 0
Urabu dake 都道府県自然環境保全地域 215 protected area contained by site 0
Sakiyama wan 自然環境保全地域 128 protected area is adjacent to site 0
Okinawa Prefectural Fisheries Coordination Regulations Article37 (ii) of the table 保護水面 65 protected area is adjacent to site 0
Okinawa Prefectural Fisheries Coordination Regulations Article37 (i) of the table 保護水面 308 protected area is adjacent to site 0
Nakanokamishima 国指定鳥獣保護区 18 protected area overlaps with site 0
Nagura anparu 国指定鳥獣保護区 1,145 protected area overlaps with site 0
Nagura Ampuru Ramsar Site, Wetland of International Importance 157 protected area contained by site 157
Kubura dake 都道府県自然環境保全地域 130 protected area contained by site 0
Iriomotejima Island 森林生態系保護地域 20,471 protected area contained by site 11,585
Iriomote ishigaki 国立公園 92,358 protected area overlaps with site 12,506
Iriomote 国指定鳥獣保護区 10,218 protected area contained by site 3,841
Higawachisaki 都道府県自然環境保全地域 2 protected area overlaps with site 0
Common fishery right area(Okinawa) 共同漁業権区域 423,217 protected area is adjacent to site 0
Agarisaki 都道府県自然環境保全地域 44 protected area overlaps with site 0

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Forest -
Wetlands (inland) Intertidal mud, sand or salt flats -
Coastline Rock stacks and islands -
For further information about the habitat classification please click here.


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