The site was identified as important in 1999 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species'):Species | Current IUCN Red List Category | Season | Year(s) | Population estimate at site | IBA criteria met |
---|---|---|---|---|---|
Running Coua Coua cursor | LC | resident | 1997 | present | A2, A3 |
Verreaux's Coua Coua verreauxi | LC | resident | 1997 | present | A1, A2, A3 |
Olive-capped Coua Coua olivaceiceps | LC | resident | 1997 | present | A3 |
Archbold's Newtonia Newtonia archboldi | LC | resident | 1997 | present | A2, A3 |
Red-shouldered Vanga Calicalicus rufocarpalis | VU | resident | 1997 | present | A2, A3 |
Lafresnaye's Vanga Xenopirostris xenopirostris | NT | resident | 1997 | present | A2, A3 |
Sickle-billed Vanga Falculea palliata | LC | resident | 1997 | present | A3 |
Subdesert Brush-warbler Nesillas lantzii | LC | resident | 1997 | present | A2, A3 |
Sakalava Weaver Ploceus sakalava | LC | resident | 1997 | present | A3 |
The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (1999).
IBA conservation assessment | |||
---|---|---|---|
Year of assessment (most recent) | State (condition) | Pressure (threat) | Response (action) |
2017 | unfavourable | very high | high |
Was the whole site assessed? | State assessed by | Accuracy of information | |
no | habitat | medium |
State (condition of the trigger species' habitats) | ||||||
---|---|---|---|---|---|---|
Habitat | Habitat detail | Reference area (ha) | Actual area (ha) | Habitat quantity (% remaining) | Habitat quality (carrying capacity) | Result |
Forest | 0 | 0 | moderate (70-90%) | moderate (70-90%) | unfavourable | |
Wetlands (inland) | 0 | 0 | good (> 90%) | good (> 90%) | favourable |
Pressure (threats to the trigger species and/or their habitats) | |||||
---|---|---|---|---|---|
Threat level 1 | Threat level 2 | Timing | Scope | Severity | Result |
Biological resource use | logging & wood harvesting - intentional use: subsistence/small scale | past (and unlikely to return) and no longer limiting | whole area/population (>90%) | slow but significant deterioration | low |
Biological resource use | logging & wood harvesting - unintentional effects: large scale | happening now | majority/most of area/population (50-90%) | moderate to rapid deterioration | high |
Human intrusions and disturbance | work and other activities | likely in long term (beyond 4 years) | majority/most of area/population (50-90%) | very rapid to severe deterioration | high |
Residential and commercial development | housing and urban areas | happening now | majority/most of area/population (50-90%) | very rapid to severe deterioration | very high |
Response (conservation actions taken for the trigger species and/or their habitats) | |||
---|---|---|---|
Protected-area designation | Management planning | Other 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 | The conservation measures needed for the site are being comprehensively and effectively implemented | high |
Protected area (PA) | PA designation | PA area (ha) | Relationship of PA with IBA | Overlap of PA with IBA (ha) |
---|---|---|---|---|
Zones humides de l'Onilahy | Ramsar Site, Wetland of International Importance | 42,950 | protected area overlaps with site | 0 |
Tahosoa | Locally Managed Marine Area | 5,000 | protected area is adjacent to site | 0 |
Habitat (IUCN level 1) | Habitat detail | Extent (% of site) |
---|---|---|
Shrubland | Bushland & thicket - deciduous | - |
Forest | Mangrove | - |
Wetlands (inland) | Rivers & streams | - |
Marine Intertidal | - |
Land-use | Extent (% of site) |
---|---|
unknown | - |
Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Saint Augustin Forest. Downloaded from
http://datazone.birdlife.org/site/factsheet/saint-augustin-forest-iba-madagascar on 04/10/2023.