UK063
South-west London Waterbodies


IBA Criteria

Year of most recent IBA criteria assessment: 2007

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Smew Mergellus albellus LC winter 2001-2006 67 individuals C6
Northern Shoveler Spatula clypeata LC passage 2001-2006 489 individuals B1i, C3
Gadwall Mareca strepera LC passage 2001-2006 689 individuals B1i, C3
Gadwall Mareca strepera LC winter 2001-2006 495 individuals B1i, C3

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here


IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2007 medium unfavourable low
Was the whole site covered? Yes State assessed by Population
Accuracy of information good

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Residential and commercial development commercial and industrial development likely in long term (beyond 4 years) some of area/population (10-49%) slow but significant deterioration medium
Residential and commercial development tourism and recreation areas happening now small area/few individuals (<10%) slow but significant deterioration low

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Mergellus albellus Smew 28 67 individuals 100 favourable
Spatula clypeata Northern Shoveler 645 355 individuals 56 unfavourable
Mareca strepera Gadwall 580 495 individuals 86 near favourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Most of site (50-90%) covered (including the most critical parts for important bird species) No management plan exists but the management planning process has begun Very little or no conservation action taking place low
For more information about IBA monitoring please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Wraysbury Reservoir Site of Special Scientific Interest (UK) 205 protected area overlaps with site 205
Wraysbury No 1 Gravel Pit Site of Special Scientific Interest (UK) 58 protected area overlaps with site 0
Wraysbury & Hythe End Gravel Pits Site of Special Scientific Interest (UK) 117 protected area overlaps with site 95
Thorpe Park No 1 Gravel Pit Site of Special Scientific Interest (UK) 43 protected area overlaps with site 0
Staines Moor Site of Special Scientific Interest (UK) 511 protected area overlaps with site 480
South West London Waterbodies Special Protection Area (Birds Directive) 825 protected area contained by site 828
South West London Waterbodies Ramsar Site, Wetland of International Importance 828 protected area overlaps with site 828
Knight & Bessborough Reservoirs Site of Special Scientific Interest (UK) 63 protected area overlaps with site 0
Kempton Park Reservoirs Site of Special Scientific Interest (UK) 25 protected area overlaps with site 0
Kempton Nature Reserves Local Nature Reserve 23 protected area overlaps with site 0

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Forest Mixed woodland -
Shrubland Scrub -
Grassland -
Wetlands (inland) Standing freshwater, Rivers and streams -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
nature conservation and research -
tourism/recreation -
water management -
For further information about the land use classification please click here.


Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: South-west London Waterbodies. Downloaded from http://www.birdlife.org on 17/01/2022.