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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 IBA criteria.

Populations meeting IBA criteria ('key species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Aquatic Warbler Acrocephalus paludicola	VU	passage (2007)	2 individuals	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.

Pressure (threats to the key species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Pollution	happen­ing now	some of popul­ation/area (10–49%)	slow deteri­oration (1–10% over 3 gener­ations)	medium
Agricultural expansion and intensification	happen­ing now	few individ­uals/small area (<10%)	slow deteri­oration (1–10% over 3 gener­ations)	low

Response (conservation actions taken for the key species and/or their habitats)
Designation	Planning	Action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A compre­hensive and appropriate manage­ment plan exists that aims to maintain or improve the popul­ations of qualify­ing bird species	Substantive conservation measures are being implemented, but these are not comprehensive and are limited by resources and capacity	high

Year	Protected Area	Designation (management category)	% coverage of IBA
-	Radipole Lake	RSPB Reserve (-)	48
-	Lodmoor	RSPB Reserve (-)	44
1975	Radipole Lake	Nature Reserve (IV)	39
1982	Lodmoor	Nature Reserve (IV)	33
1985	Radipole Lake	Site of Special Scientific Interest (UK) (IV)	56
1985	Lodmoor	Site of Special Scientific Interest (UK) (IV)	44

Habitat	% of IBA	Habitat detail
Marine Coastal/Supratidal	major (>10)

Land use	% of IBA
nature conservation and research	major (>10)

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Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Weymouth Wetlands (United Kingdom). Downloaded from https://datazone.birdlife.org/site/factsheet/weymouth-wetlands-iba-united-kingdom on 24/01/2025.