Data Zone
The site was identified as internationally important for bird conservation in 2007 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 |
|---|---|---|---|---|
| Greater White-fronted Goose Anser albifrons | LC | winter (2001–2006) | 140 birds | C6 |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2007. The most recent assessment (2007) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2007 | moderate | medium | medium |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | good | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| Greater White-fronted Goose Anser albifrons | 100 / 140 (birds) | 72 | moderate | ||
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Human intrusions and disturbance | likely in short term (<4 years) | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | medium |
| Residential and commercial development | likely in long term (>4 years) | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | medium |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Whole area (>90%) covered by appropriate conservation designation | A management plan exists, but it is out of date or not comprehensive | Some limited conservation initiatives are in place | medium |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| - | Ynys Hir | RSPB Reserve (-) | 14 |
| 1951 | Snowdonia | National Park (V) | 26 |
| 1954 | Dyfi | Site of Special Scientific Interest (UK) (IV) | 100 |
| 1969 | Dyfi | National Nature Reserve (IV) | 69 |
| 1969 | Ynys-Hir | Nature Reserve (IV) | 21 |
| 1976 | Dyfi National Nature Reserve | UNESCO-MAB Biosphere Reserve (UA) | 77 |
| 2005 | Pen Llyn a`r Sarnau / Lleyn Peninsula and the Sarnau | Marine Protected Area (OSPAR) (UA) | 60 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Coastal/Supratidal | major (>10) | |
| Marine Intertidal | major (>10) | |
| Marine Neritic | major (>10) | |
| Grassland | minor (<10) | Humid grasslands |
| Land use | % of IBA |
|---|---|
| fisheries/aquaculture | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Dyfi Estuary/Aber Dyfi (United Kingdom). Downloaded from
https://datazone.birdlife.org/site/factsheet/dyfi-estuary-aber-dyfi-iba-united-kingdom on 26/12/2024.