UK031
Hornsea Mere


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
Little Gull Hydrocoloeus minutus LC non-breeding 1994-1995 2,000 individuals A4i, 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 high 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
Energy production and mining renewable energy likely in short term (within 4 years) small area/few individuals (<10%) moderate to rapid deterioration low
Natural system modifications dams & water management/use - abstraction of surface water (agricultural use) likely in short term (within 4 years) small area/few individuals (<10%) slow but significant deterioration low
Natural system modifications other ecosystem modifications happening now small area/few individuals (<10%) slow but significant deterioration low
Pollution agricultural & forestry effluents - nutrient loads happening now majority/most of area/population (50-90%) slow but significant deterioration high
Pollution domestic & urban waste water - sewage happening now majority/most of area/population (50-90%) slow but significant deterioration high

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Branta leucopsis Barnacle Goose 185 115 individuals 63 unfavourable
Mareca strepera Gadwall 300 191 individuals 64 unfavourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Whole area of site (>90%) covered by appropriate conservation designation Unknown 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)
Hornsea Mere Site of Special Scientific Interest (UK) 232 protected area overlaps with site 231
Hornsea Mere Special Protection Area (Birds Directive) 232 is identical to site 231

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland, Alluvial and very wet forest -
Wetlands (inland) Standing freshwater, Water fringe vegetation, Fens, transition mires and springs -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
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: Hornsea Mere. Downloaded from http://www.birdlife.org on 20/08/2022.