Data Zone
The site was identified as internationally important for bird conservation in 2023 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 |
|---|---|---|---|---|
| Black-polled Yellowthroat Geothlypis speciosa | VU | resident (2012) | 34 birds | A1 |
| A4iii Species group - waterbirds | n/a | winter (2018–2022) | 20,000 birds | B3b |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2023. The most recent assessment (2022) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2022 | very poor | very high | high |
| 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 |
| Wetlands (inland) | poor (40–69%) | moderate (70–90%) | very poor |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Natural system modifications | happening now | whole of population/area (>90%) | moderate decline (10–30% over 3 generations) | very high |
| Invasive and other problematic species and genes | happening now | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Pollution | happening now | most of population/area (50–90%) | moderate decline (10–30% 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 |
| Agricultural expansion and intensification | happening now | some of population/area (10–49%) | rapid decline (>30% over 3 generations) | high |
| Biological resource use | happening now | some of population/area (10–49%) | no or slight decline (<1% over 3 generations) | low |
| Transportation and service corridors | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Geological events | past (and unlikely to return) and no longer limiting | 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 |
| Most of area (50–90%) covered (including the most critical parts for important bird species) | 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 |
|---|---|---|
| Artificial/Terrestrial | 60 | Arable land; Urban parks & gardens |
| Wetlands (inland) | 40 | Freshwater marshes & swamps |
| Land use | % of IBA |
|---|---|
| agriculture | 65 |
| urban/industrial/transport | 34 |
| rangeland/pastureland | - |
| tourism/recreation | - |
| fisheries/aquaculture | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Ciénegas del Lerma (Mexico). Downloaded from
https://datazone.birdlife.org/site/factsheet/ciénegas-del-lerma-iba-mexico on 23/12/2024.