Abberton Reservoir

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
Northern Shoveler Spatula clypeata LC winter 2001-2006 419 individuals B1i, C3
A4iii Species group - waterbirds n/a passage 2001-2006 21,378 individuals A4iii, C4
A4iii Species group - waterbirds n/a winter 2001-2006 22,232 individuals A4iii, C4

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 low very 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
Natural system modifications dams & water management/use - abstraction of surface water (domestic use) likely in short term (within 4 years) small area/few individuals (<10%) slow but significant deterioration low

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Spatula clypeata Northern Shoveler 685 419 individuals 62 unfavourable
Mareca strepera Gadwall 430 291 individuals 68 unfavourable
Anas crecca 4550 3286 individuals 73 near favourable
Phalacrocorax carbo Great Cormorant 505 370 breeding pairs 74 near favourable
Pluvialis apricaria Eurasian Golden Plover 3300 308 individuals 10 very unfavourable
Species group - waterbirds A4iii 36504 22232 individuals 61 unfavourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Whole area of site (>90%) covered by appropriate conservation designation No management plan exists but the management planning process has begun Some limited conservation initiatives are in 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)
Abberton Reservoir Site of Special Scientific Interest (UK) 718 protected area overlaps with site 718
Abberton Reservoir Special Protection Area (Birds Directive) 2,019 is identical to site 2,019
Abberton Reservoir Ramsar Site, Wetland of International Importance 726 protected area overlaps with site 726


IUCN Habitat Habitat detail Extent (% of site)
Grassland -
Wetlands (inland) Standing freshwater, Water fringe vegetation -
Artificial/Terrestrial Arable land -
For further information about the habitat classification please click here.

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Abberton Reservoir. Downloaded from on 10/08/2022.