Uracus Marine


IBA Criteria

Year of most recent IBA criteria assessment: 2012

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Red-tailed Tropicbird Phaethon rubricauda LC breeding 1979-1988 200 breeding pairs A4ii
Brown Noddy Anous stolidus LC breeding 1979-1988 6,000 breeding pairs A4i
Sooty Tern Onychoprion fuscatus LC breeding 1979-1988 95,000 breeding pairs A4i
A4iii Species group - waterbirds n/a breeding 1979-1988 101,000 breeding pairs A4iii

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)
2012 medium favourable low
Was the whole site covered? Yes State assessed by Habitat
Accuracy of information poor

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Climate change and severe weather habitat shifting and alteration likely in long term (beyond 4 years) some of area/population (10-49%) no or imperceptible deterioration low
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
Sea 0 0 good (> 90%) good (> 90%) favourable

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 Very little or no conservation action taking place low
For more information about IBA monitoring please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Uracas Island Preserve 209 protected area overlaps with site 0
Maug Island Preserve 211 protected area overlaps with site 0
Marianas Trench Marine National Monument Marine National Monument 24,660,830 protected area contains site 1,585,558
Marianas Trench Marine National Monument 24,851,700 protected area contains site 0
Marianas Trench Marine National Monument 77,705 protected area overlaps with site 0
Mariana Arc Of Fire National Wildlife Refuge 22,257 protected area overlaps with site 0

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Sea Coral reefs and lagoons, Marine areas, Shallow marine waters -
For further information about the habitat classification please click here.


Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Uracus Marine. Downloaded from http://www.birdlife.org on 21/01/2022.