Data Zone
The site was identified as internationally important for bird conservation 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 List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Northern Bobwhite Colinus virginianus | NT | resident (2020) | 48 birds | B1a |
| American White Pelican Pelecanus erythrorhynchos | LC | winter (2018) | 1,685 birds | B3a |
| Eastern Meadowlark Sturnella magna | NT | resident (2017) | 170 birds | B1a |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2021. The most recent assessment (2022) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2022 | good | high | medium |
| 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 |
| Forest | good (>90%) | good (>90%) | good |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Agricultural expansion and intensification | happening now | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | high |
| Natural system modifications | happening now | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | high |
| Transportation and service corridors | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Residential and commercial development | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Biological resource use | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Pollution | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Energy production and mining | likely in long term (>4 years) | 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 |
| Some of area covered (10–49%) | 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 | medium |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Forest | 12 | Mangrove |
| Land use | % of IBA |
|---|---|
| agriculture | 74 |
| forestry | 12 |
| urban/industrial/transport | 1 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Humedales de Alvarado (Mexico). Downloaded from
https://datazone.birdlife.org/site/factsheet/humedales-de-alvarado-iba-mexico on 23/12/2024.