Data Zone
The site was identified as internationally important for bird conservation in 2010 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 |
|---|---|---|---|---|
| Whimbrel Numenius phaeopus | LC | winter (2008) | 1,500 birds | A4i |
| Grey Gull Larus modestus | LC | non-breeding (2008) | 2,000 birds | A4i |
| Franklin's Gull Larus pipixcan | LC | non-breeding (2007) | max 10,000 birds | A4i |
| Elegant Tern Thalasseus elegans | NT | unknown (2008) | 1,400 birds | A1, A4i |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2010. The most recent assessment (2020) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2020 | moderate | very high | low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | habitat | good | |
| State (condition of the trigger species' habitats) | |||
|---|---|---|---|
| Habitat | Quantity (% remaining) | Quality (% carrying capacity) | Result |
| Marine Coastal/Supratidal | good (>90%) | moderate (70–90%) | moderate |
| Marine Intertidal | - | good (>90%) | moderate |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Invasive and other problematic species and genes | happening now | whole of population/area (>90%) | moderate decline (10–30% over 3 generations) | very high |
| Biological resource use | happening now | whole of population/area (>90%) | moderate decline (10–30% over 3 generations) | very high |
| Residential and commercial development | happening now | whole of population/area (>90%) | slow decline (1–10% over 3 generations) | high |
| Climate change and severe weather | happening now | whole of population/area (>90%) | slow decline (1–10% over 3 generations) | high |
| Pollution | happening now | most of population/area (50–90%) | slow decline (1–10% over 3 generations) | high |
| Geological events | likely in short term (<4 years) | whole of population/area (>90%) | moderate decline (10–30% over 3 generations) | high |
| Human intrusions and disturbance | happening now | some of population/area (10–49%) | no or slight decline (<1% over 3 generations) | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Some of area covered (10–49%) | No management plan exists, but the management planning process has begun | Substantive conservation measures are being implemented, but these are not comprehensive and are limited by resources and capacity | low |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Coastal/Supratidal | major (>10) | |
| Marine Intertidal | major (>10) | |
| Marine Neritic | major (>10) |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Desembocadura del Río Maipo (Chile). Downloaded from
https://datazone.birdlife.org/site/factsheet/desembocadura-del-río-maipo-iba-chile on 27/12/2024.