Data Zone
The site was identified as important in 2021 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 List1 | Season | Year(s) | Size | IBA criteria |
|---|---|---|---|---|---|
| Whimbrel Numenius phaeopus | LC | non-breeding | 2016-2021 | 258-600 individuals | B3a |
| Franklin's Gull Larus pipixcan | LC | non-breeding | 2016-2021 | 1,300-32,200 individuals | A4, B3a |
| Snowy-crowned Tern Sterna trudeaui | LC | resident | 2016-2021 | 45-110 individuals | A4, B3a |
| Elegant Tern Thalasseus elegans | NT | non-breeding | 2016-2021 | 45-2,800 individuals | A4, B1a, B3a |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2021) may differ.
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2021. The most recent assessment (2016) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2016 | very unfavourable | very high | negligible |
| Whole site assessed? | State assessed by | Accuracy of information | |
| no | habitat | good | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Reference | Actual | Units | % remaining | Result |
| Franklin's Gull Larus pipixcan | 1,500,000 | 12,000 | individuals | 1 | very unfavourable |
| State (condition of the trigger species' habitats) | |||
|---|---|---|---|
| Habitat | Quantity (% remaining) | Quality (% carrying capacity) | Result |
| Marine Intertidal | poor (40-69%) | poor (40-69%) | very unfavourable |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Residential and commercial development | 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 areas | Management plan | Other action | Result |
| Not assessed | No management plan exists but the management planning process has begun | Not assessed | negligible |
| Habitat1 | Habitat detail | % of IBA |
|---|---|---|
| Marine Coastal/Supratidal | - | |
| Marine Intertidal | - | |
| Wetlands (inland) | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Humedal-Marisma Rocuant Andalién (Chile). Downloaded from
https://datazone.birdlife.org/site/factsheet/humedal-marisma-rocuant-andalién-iba-chile on 28/11/2024.