Year of most recent IBA criteria assessment: 2007
Populations of IBA trigger speciesSpecies | 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
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 |
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 |
IUCN Habitat | Habitat detail | Extent (% of site) |
---|---|---|
Forest | Mixed woodland | - |
Shrubland | Scrub | - |
Grassland | - | |
Wetlands (inland) | Standing freshwater, Rivers and streams | - |
Land-use | Extent (% of site) |
---|---|
nature conservation and research | - |
tourism/recreation | - |
water management | - |
Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: South-west London Waterbodies. Downloaded from
http://www.birdlife.org on 10/08/2022.