• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Greater White-fronted Goose Anser albifrons	LC	winter	2001-2006	140 individuals	C6

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2007) may differ.

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.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Greater White-fronted Goose Anser albifrons	140	100	individuals	72	near favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Human intrusions and disturbance	likely in short term (within 4 years)	some of area/population (10-49%)	moderate to rapid deterioration	medium
Residential and commercial development	likely in long term (beyond 4 years)	some of area/population (10-49%)	moderate to rapid deterioration	medium

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A management plan exists but it is out of date or not comprehensive	Some limited conservation initiatives are in place	medium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	% overlap with IBA
-	Ynys Hir	RSPB Reserve	14
1951	Snowdonia	National Park	26
1954	Dyfi	Site of Special Scientific Interest (UK)	100
1969	Dyfi	National Nature Reserve	69
1969	Ynys-Hir	Nature Reserve	21
1976	Cors Fochno & Dyfi	Ramsar Site, Wetland of International Importance	81
1976	Dyfi National Nature Reserve	UNESCO-MAB Biosphere Reserve	77
1996	Pen Llŷn a`r Sarnau/ Lleyn Peninsula and the Sarnau	Site of Community Importance (Habitats Directive)	86
2002	Dyfi Estuary / Aber Dyfi	Special Protection Area (Birds Directive)	100
2005	Pen Llyn a`r Sarnau / Lleyn Peninsula and the Sarnau	Marine Protected Area (OSPAR)	60

Habitat1	Habitat detail	% of IBA
Marine Coastal/Supratidal		major (>10)
Marine Intertidal		major (>10)
Marine Neritic		major (>10)
Grassland	Humid grasslands	minor (<10)

1. IUCN Habitat classification.

Land use	% of IBA
fisheries/aquaculture	-

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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 24/11/2024.