UK064
Solent Marshes and Southampton Water


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
Brent Goose Branta bernicla LC winter 2001-2006 6,678 individuals A4i, B1i, C3
Common Teal Anas crecca LC winter 2001-2006 4,898 individuals B1i, C3
Eurasian Curlew Numenius arquata NT winter 2001-2006 1,373 individuals B2
Black-tailed Godwit Limosa limosa NT winter 2001-2006 1,158 individuals B1i, C3
Dunlin Calidris alpina LC winter 2001-2006 8,825 individuals B2
Mediterranean Gull Larus melanocephalus LC breeding 2000 11 breeding pairs C6
Little Tern Sternula albifrons LC breeding 2006 54 breeding pairs B2, C6
Common Tern Sterna hirundo LC breeding 2006 377 breeding pairs C6
Common Tern Sterna hirundo LC breeding 2000 192 breeding pairs C6
Arctic Tern Sterna paradisaea LC breeding 2000 22 breeding pairs C6
Sandwich Tern Thalasseus sandvicensis LC breeding 2006 224 breeding pairs B2, C6
Sandwich Tern Thalasseus sandvicensis LC breeding 2000 268 breeding pairs B2, C6
A4iii Species group - waterbirds n/a winter 2001-2006 53,809 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 high unfavourable medium
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
Biological resource use fishing & harvesting aquatic resources - unintentional effects: large scale happening now small area/few individuals (<10%) slow but significant deterioration low
Climate change and severe weather habitat shifting and alteration happening now some of area/population (10-49%) slow but significant deterioration medium
Natural system modifications dams & water management/use - small dams 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 some of area/population (10-49%) slow but significant deterioration medium
Residential and commercial development tourism and recreation areas happening now some of area/population (10-49%) moderate to rapid deterioration high
Transportation and service corridors shipping lanes likely in short term (within 4 years) some of area/population (10-49%) moderate to rapid deterioration medium

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Branta bernicla Brent Goose 7700 6678 individuals 87 near favourable
Anas crecca Common Teal 3750 4898 individuals 100 favourable
Charadrius hiaticula Common Ringed Plover 615 393 individuals 64 unfavourable
Charadrius hiaticula Common Ringed Plover 575 312 individuals 55 unfavourable
Numenius arquata Eurasian Curlew 1750 1373 individuals 79 near favourable
Limosa limosa Black-tailed Godwit 985 1158 individuals 100 favourable
Calidris alpina Dunlin 12300 8825 individuals 72 near favourable
Sternula albifrons Little Tern 41 54 breeding pairs 100 favourable
Sterna hirundo Common Tern 450 377 breeding pairs 84 near favourable
Sterna paradisaea Arctic Tern 41 22 breeding pairs 54 unfavourable
Thalasseus sandvicensis Sandwich Tern 300 224 breeding pairs 75 near favourable
Species group - waterbirds A4iii 15037 7447 breeding pairs 50 unfavourable
Species group - waterbirds A4iii 48965 53809 individuals 100 favourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Whole area of site (>90%) covered by appropriate conservation designation A management plan exists but it is out of date or not comprehensive Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity medium
For more information about IBA monitoring please click here

IBA Protection

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Yar Estuary Site of Special Scientific Interest (UK) 132 protected area overlaps with site 0
Whitecliff Bay and Bembridge Ledges Site of Special Scientific Interest (UK) 132 protected area overlaps with site 0
Westwood Woodland Park Local Nature Reserve 50 protected area is adjacent to site 0
Upper Hamble Estuary and Woods Site of Special Scientific Interest (UK) 151 protected area overlaps with site 0
Titchfield Haven Site of Special Scientific Interest (UK) 135 protected area overlaps with site 0
Titchfield Haven Local Nature Reserve 93 protected area overlaps with site 0
Titchfield Haven National Nature Reserve 120 protected area overlaps with site 0
Thorness Bay Site of Special Scientific Interest (UK) 86 protected area overlaps with site 0
The New Forest Site of Special Scientific Interest (UK) 28,945 protected area is adjacent to site 0
Sturt Pond Local Nature Reserve 11 protected area overlaps with site 0
St Helen's Duver & Priory Wood Nature Reserve 40 protected area overlaps with site 0
Sowley Pond Site of Special Scientific Interest (UK) 49 protected area overlaps with site 0
South Wight Maritime Site of Community Importance (Habitats Directive) 19,866 protected area is adjacent to site 0
South Wight Maritime Marine Protected Area (OSPAR) 0 protected area is adjacent to site 0
South Hampshire Coast Area of Outstanding Natural Beauty 7,700 protected area overlaps with site 2,016
Solent Maritime Marine Protected Area (OSPAR) 0 protected area overlaps with site 0
Solent Maritime Site of Community Importance (Habitats Directive) 11,243 protected area overlaps with site 0
Solent and Southampton Water Ramsar Site, Wetland of International Importance 5,415 protected area overlaps with site 5,415
Solent and Southampton Water Marine Protected Area (OSPAR) 0 protected area overlaps with site 0
Solent and Southampton Water Special Protection Area (Birds Directive) 5,401 protected area contained by site 5,506
Solent And Isle Of Wight Lagoons Site of Community Importance (Habitats Directive) 38 protected area overlaps with site 0
Ryde Sands and Wootton Creek Site of Special Scientific Interest (UK) 420 protected area overlaps with site 395
River Test Site of Special Scientific Interest (UK) 438 protected area is adjacent to site 0
North Solent Site of Special Scientific Interest (UK) 1,188 protected area overlaps with site 850
North Solent National Nature Reserve 926 protected area overlaps with site 576
Newtown Marshes Local Nature Reserve 18 protected area overlaps with site 0
Newtown Harbour Site of Special Scientific Interest (UK) 616 protected area overlaps with site 435
Newtown Harbour National Nature Reserve 286 protected area overlaps with site 0
Newtown Nature Reserve 350 protected area overlaps with site 0
New Forest National Park 56,693 protected area overlaps with site 2,787
Mercury Marshes Local Nature Reserve 6 protected area overlaps with site 0
Medina Estuary Site of Special Scientific Interest (UK) 101 protected area overlaps with site 0
Manor Farm Local Nature Reserve 144 protected area is adjacent to site 0
Lymington-Keyhaven Marshes Local Nature Reserve 168 protected area overlaps with site 0
Lymington River Reedbeds Site of Special Scientific Interest (UK) 42 protected area overlaps with site 0
Lymington River Site of Special Scientific Interest (UK) 35 protected area overlaps with site 0
Lower Test Valley Site of Special Scientific Interest (UK) 142 protected area overlaps with site 0
Lincegrove and Hackett's Marshes Site of Special Scientific Interest (UK) 38 protected area overlaps with site 0
Lepe Point Local Nature Reserve 4 protected area overlaps with site 0
Lee-On-The Solent To Itchen Estuary Site of Special Scientific Interest (UK) 586 protected area overlaps with site 535
King's Quay Shore Site of Special Scientific Interest (UK) 91 protected area overlaps with site 0
Keyhaven Marshes National Nature Reserve 314 protected area overlaps with site 302
Isle of Wight Area of Outstanding Natural Beauty 19,150 protected area overlaps with site 807
Hythe To Calshot Marshes Site of Special Scientific Interest (UK) 592 protected area overlaps with site 580
Hurst Castle and Lymington River Estuary Site of Special Scientific Interest (UK) 1,078 protected area overlaps with site 1,110
Hook with Warsash Local Nature Reserve 252 protected area overlaps with site 0
Holly Hill Woodland Park Local Nature Reserve 28 protected area overlaps with site 0
Hamstead Heritage Coast 3,391 protected area overlaps with site 498
Hamble River Nature Reserve 20 protected area overlaps with site 0
Hackett's Marsh Local Nature Reserve 20 protected area overlaps with site 0
Eling and Bury Marshes Site of Special Scientific Interest (UK) 112 protected area overlaps with site 0
Dibden Bay Site of Special Scientific Interest (UK) 230 protected area overlaps with site 0
Chessel Bay Local Nature Reserve 13 protected area overlaps with site 0
Calshot Marshes Local Nature Reserve 51 protected area overlaps with site 0
Brading Marshes To St, Helen's Ledges Site of Special Scientific Interest (UK) 489 protected area overlaps with site 443
Brading Marshes Nature Reserve 384 protected area overlaps with site 0
Boldre Foreshore Local Nature Reserve 193 protected area overlaps with site 0

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland, Mixed woodland -
Grassland -
Wetlands (inland) Tidal rivers and enclosed tidal waters, Mud flats and sand flats, Salt marshes, Shingle or stony beaches, Coastal lagoons, Rivers and streams, Water fringe vegetation -
For further information about the habitat classification please click here.

Land use

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


Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Solent Marshes and Southampton Water. Downloaded from http://www.birdlife.org on 20/10/2020.