Data Zone
The site was identified as internationally important for bird conservation in 1999 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Milky Stork Mycteria cinerea | EN | breeding (1984) | 10–30 birds | A1 |
| Royal Spoonbill Platalea regia | LC | breeding (1970–1979) | present | A4i |
| Black-headed Ibis Threskiornis melanocephalus | LC | breeding (1970–1979) | present | A4i |
| Cattle Egret Bubulcus ibis | LC | breeding (1985) | present | A4i |
| Christmas Island Frigatebird Fregata andrewsi | VU | non-breeding (1987–1998) | present | A1 |
| Little Cormorant Microcarbo niger | LC | breeding (1985) | present | A4i |
| Little Black Cormorant Phalacrocorax sulcirostris | LC | breeding (1985) | present | A4i |
| Oriental Darter Anhinga melanogaster | LC | breeding (1970–1979) | present | A4i |
| A4iii Species group - waterbirds | n/a | breeding (1985) | min 7,500 pairs | A4iii |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 1999. The most recent assessment (2017) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2017 | poor | low | not assessed |
| Whole site assessed? | State assessed by | Accuracy of information | |
| no | unset | medium | |
| State (condition of the trigger species' habitats) | |||
|---|---|---|---|
| Habitat | Quantity (% remaining) | Quality (% carrying capacity) | Result |
| Forest | moderate (70–90%) | moderate (70–90%) | poor |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Human intrusions and disturbance | happening now | few individuals/small area (<10%) | slow decline (1–10% over 3 generations) | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Not assessed | Not assessed | Not assessed | not assessed |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1984 | Pulau Kasa | Suaka Margasatwa (III) | 100 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Forest | major (>10) | Mangrove forest (tropical); Heath forest (tropical) |
| Marine Coastal/Supratidal | major (>10) | |
| Marine Intertidal | major (>10) |
| Land use | % of IBA |
|---|---|
| nature conservation and research | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Pulau Dua (Indonesia). Downloaded from
https://datazone.birdlife.org/site/factsheet/pulau-dua-iba-indonesia on 23/12/2024.