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Location United Kingdom, Wales
Central coordinates 3o 59.07' West  52o 32.68' North
IBA criteria C6
Area 2,059 ha
Altitude 0 - 15m
Year of IBA assessment 2007

Royal Society for the Protection of Birds



Site description This west coast estuary is of outstanding physiographic interest for its sand-dune complex, extensive tract of actively-growing raised mire and diverse flood-plain habitats. The sand-dune system comprises all stages of dune formation and associated flora. The IBA is important for wintering wildfowl. Anser albifrons are the flavirostris subspecies.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Greater White-fronted Goose Anser albifrons winter  2001-2006  140 individuals  good  C6  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Aber Dyfi (Dyfi Estuary) Birds Directive 2,048 protected area contained by site 2,048  
Cors Fochno and Dyfi Wetlands of International Importance (Ramsar) 2,492 protected area overlaps with site 1,661  
Dyfi National Nature Reserve 2,263 protected area overlaps with site 1,428  
Dyfi Site of Special Scientific Interest 3,787 protected area contains site 2,059  
Dyfi National Nature Reserve UNESCO-MAB Biosphere Reserve 1,589 protected area overlaps with site 1,589  
Pen Llyn a'r Sarnau (Lleyn Peninsula and the Sarnau) Habitats Directive 145,490 protected area overlaps with site 1,775  
Snowdonia National Park National Park 0 protected area overlaps with site 542  
Ynys Hir RSPB Reserve 667 protected area overlaps with site 281  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Grassland Humid grasslands  -
Wetlands (inland) Fens, transition mires and springs; Mud flats and sand flats; Raised bogs; Rivers and streams; Salt marshes; Sand dunes and beaches; Tidal rivers and enclosed tidal waters  -

Land use

Land-use Extent (% of site)
fisheries/aquaculture -

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Dyfi Estuary/Aber Dyfi. Downloaded from http://www.birdlife.org on 17/04/2014

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