NL034
Lake IJsselmeer This is an IBA in danger! 


IBA Criteria

Year of most recent IBA criteria assessment: 2016

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Mute Swan Cygnus olor LC non-breeding 2011-2015 5,083-6,091 individuals B1i, C3
Tundra Swan Cygnus columbianus LC non-breeding 2011-2015 1,144-1,933 individuals B1i, C2, C6
Barnacle Goose Branta leucopsis LC non-breeding 2011-2015 103,691-113,028 individuals A4i, B1i, C2, C6
Bean Goose Anser fabalis LC non-breeding 2011-2015 16,018-26,560 individuals A4i, B1i, C3
Smew Mergellus albellus LC non-breeding 2011-2015 893-2,195 individuals B1i, C2, C6
Goosander Mergus merganser LC non-breeding 2011-2015 7,328-20,187 individuals B1i, C3
Red-breasted Merganser Mergus serrator LC non-breeding 2011-2015 994-2,710 individuals B1i, C3
Common Pochard Aythya ferina VU non-breeding 2011-2015 4,853-10,933 individuals A1, B1i, C1, C3
Common Pochard Aythya ferina VU winter 2011-2015 1,383 individuals B2
Tufted Duck Aythya fuligula LC non-breeding 2011-2015 17,610-22,182 individuals B1i, C3
Greater Scaup Aythya marila LC non-breeding 2011-2015 79,927-126,405 individuals A4i, B1i, C3
Greater Scaup Aythya marila LC winter 2011-2015 64,242 individuals B2
Gadwall Mareca strepera LC non-breeding 2011-2015 2,322-3,869 individuals B1i, C3
Eurasian Wigeon Mareca penelope LC non-breeding 2011-2015 21,117-29,837 individuals B1i, C3
Northern Pintail Anas acuta LC non-breeding 2011-2015 842-1,905 individuals B1i, C3
Common Coot Fulica atra LC non-breeding 2011-2015 27,316-62,918 individuals B1i, C3
Eurasian Spoonbill Platalea leucorodia LC breeding 2011-2015 87-114 breeding pairs B1i, C2
Eurasian Spoonbill Platalea leucorodia LC non-breeding 2011-2015 197-332 individuals B1i, C2
Great White Egret Ardea alba LC breeding 2011-2015 9-35 breeding pairs C6
Great Cormorant Phalacrocorax carbo LC non-breeding 2011-2015 16,294-20,051 individuals B1i, C3
Great Cormorant Phalacrocorax carbo LC breeding 2011-2015 4,614-6,222 breeding pairs B1i, C3
Eurasian Golden Plover Pluvialis apricaria LC non-breeding 2011-2015 6,255-11,050 individuals C6
Eurasian Curlew Numenius arquata NT non-breeding 2011-2015 7,898-9,931 individuals B1i, C3
Black-tailed Godwit Limosa limosa NT non-breeding 2011-2015 2,390-2,947 individuals B1i, C3
Ruff Calidris pugnax LC non-breeding 2011-2015 3,929-6,411 individuals C6
Black-headed Gull Larus ridibundus LC breeding 2011-2015 16,141-18,643 breeding pairs B1i, B3, C3
Mediterranean Gull Larus melanocephalus LC breeding 2011-2015 78 breeding pairs B3, C6
Caspian Tern Hydroprogne caspia LC non-breeding 2011-2015 67-80 individuals B1i, C2, C6
Black Tern Chlidonias niger LC non-breeding 2011-2015 16,736-22,000 individuals A4i, B1i, C2, C6
Common Tern Sterna hirundo LC breeding 2011-2015 4,646-5,404 breeding pairs B1i, C2, C6
Common Tern Sterna hirundo LC non-breeding 2011-2015 6,975-8,990 individuals C6
A4iii Species group - waterbirds n/a non-breeding 2011-2015 155,654-203,754 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)
2018 very high not assessed medium
Was the whole site covered? No State assessed by unset
Accuracy of information medium

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Agricultural expansion and intensification marine and freshwater aquaculture - industrial aquaculture happening now majority/most of area/population (50-90%) very rapid to severe deterioration very high
Human intrusions and disturbance recreational activities happening now small area/few individuals (<10%) moderate to rapid deterioration low
Residential and commercial development tourism and recreation areas likely in long term (beyond 4 years) some of area/population (10-49%) slow but significant deterioration medium

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Whole area of site (>90%) covered by appropriate conservation designation A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species Some limited conservation initiatives are in place medium
For more information about IBA monitoring please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
The Wadden Sea World Heritage Site (natural or mixed) 1,143,403 protected area is adjacent to site 0
Stoenckherne II Natural Monument 100 protected area contained by site 100
Stoenckherne Natural Monument 40 protected area contained by site 40
Onderdijken Nature Reserve 100 protected area contained by site 100
Markermeer Ramsar Site, Wetland of International Importance 61,000 protected area is adjacent to site 0
Ketelmeer en Vossemeer Ramsar Site, Wetland of International Importance 3,900 protected area is adjacent to site 0
IJsselmeer Site of Community Importance (Habitats Directive) 2,441 protected area contained by site 2,526
IJsselmeer Natuurbeschermingswet 113,341 is identical to site 0
IJsselmeer Ramsar Site, Wetland of International Importance 108,000 protected area contained by site 108,000
IJsselmeer Special Protection Area (Birds Directive) 113,341 is identical to site 109,000
Friese IJsselmeerkust II Natural Monument 120 protected area overlaps with site 12
Friese IJsselmeerkust I Natural Monument 4,800 protected area overlaps with site 88
De Ven Nature Conservation Law 17 protected area contained by site 45
De Ven Nature Reserve 17 protected area contained by site 17

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Wetlands (inland) Standing freshwater -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
fisheries/aquaculture -
water management -
military -
tourism/recreation -
urban/industrial/transport -
For further information about the land use classification please click here.


Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Lake IJsselmeer. Downloaded from http://www.birdlife.org on 04/12/2022.