Data Zone
The site was identified as internationally important for bird conservation in 2012 because it was regularly supporting significant populations of the species listed below, meeting IBA criteria.
Populations meeting IBA criteria ('key species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Black Noddy Anous minutus | LC | breeding (2004) | 25,000 individuals | A4i |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2012. The most recent assessment (2018) is shown below.
| IBA conservation status | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2018 | favourable | medium | very low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | habitat | good | |
| State (condition of the key species' habitats) | |||
|---|---|---|---|
| Habitat | Quantity (% remaining) | Quality (% carrying capacity) | Result |
| Marine Neritic | good (>90%) | good (>90%) | favourable |
| Pressure (threats to the key species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Pollution | happening now | some of population/area (10–49%) | slow deterioration (1–10% over 3 generations) | medium |
| Biological resource use | likely in long term (beyond 4 years) | whole population/area (>90%) | slow deterioration (1–10% over 3 generations) | medium |
| Climate change and severe weather | likely in long term (beyond 4 years) | some of population/area (10–49%) | no deterioration (<1% over 3 generations) | low |
| Response (conservation actions taken for the key species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Little/none of site covered (<10%) | No management planning has taken place | Unknown | very low |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 2001 | Helen Reef | Reserve (II) | 35 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Neritic | 100 |
Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Helen Island Marine (Palau). Downloaded from
https://datazone.birdlife.org/site/factsheet/helen-island-marine-iba-palau on 25/01/2025.