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 |
|---|---|---|---|---|
| Madagascar Heron Ardea humbloti | EN | resident (1998) | present | A1, A3 |
| Roseate Tern Sterna dougallii | LC | breeding (1998) | 1,480 birds | A4i |
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 | very poor | very high | high |
| Whole site assessed? | State assessed by | Accuracy of information | |
| no | habitat | medium | |
| State (condition of the trigger species' habitats) | |||
|---|---|---|---|
| Habitat | Quantity (% remaining) | Quality (% carrying capacity) | Result |
| Marine Intertidal | - | moderate (70–90%) | very poor |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Geological events | likely in short term (<4 years) | whole of population/area (>90%) | rapid decline (>30% over 3 generations) | very high |
| Biological resource use | happening now | whole of population/area (>90%) | slow decline (1–10% over 3 generations) | high |
| Climate change and severe weather | happening now | most of population/area (50–90%) | slow decline (1–10% over 3 generations) | high |
| Energy production and mining | likely in short term (<4 years) | some of population/area (10–49%) | rapid decline (>30% over 3 generations) | high |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Whole area (>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 | The conservation measures needed for the site are being comprehensively and effectively implemented | high |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Savanna | major (>10) | Bushland & thicket - deciduous |
| Marine Coastal/Supratidal | minor (<10) | |
| Marine Intertidal | minor (<10) |
| Land use | % of IBA |
|---|---|
| fisheries/aquaculture | - |
| other | - |
| not utilised | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Barren Islands MPA (Madagascar). Downloaded from
https://datazone.birdlife.org/site/factsheet/barren-islands-mpa-iba-madagascar on 22/12/2024.