NL034
Lake IJsselmeer This is an IBA in Danger! 


IBA Justification

The site was identified as internationally important for bird conservation in 2016 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:
Species Red List Season (year[s] of estimate) Size IBA criteria
Mute Swan Cygnus olor LC non-breeding (2011–2015) 5,083–6,091 birds B1i, C3
Tundra Swan Cygnus columbianus LC non-breeding (2011–2015) 1,144–1,933 birds B1i, C2, C6
Barnacle Goose Branta leucopsis LC non-breeding (2011–2015) 103,691–113,028 birds A4i, B1i, C2, C6
Bean Goose Anser fabalis LC non-breeding (2011–2015) 16,018–26,560 birds A4i, B1i, C3
Smew Mergellus albellus LC non-breeding (2011–2015) 893–2,195 birds B1i, C2, C6
Goosander Mergus merganser LC non-breeding (2011–2015) 7,328–20,187 birds B1i, C3
Red-breasted Merganser Mergus serrator LC non-breeding (2011–2015) 994–2,710 birds B1i, C3
Common Pochard Aythya ferina VU non-breeding (2011–2015) 4,853–10,933 birds A1, B1i, C1, C3
Common Pochard Aythya ferina VU winter (2011–2015) 1,383 birds B2
Tufted Duck Aythya fuligula LC non-breeding (2011–2015) 17,610–22,182 birds B1i, C3
Greater Scaup Aythya marila LC non-breeding (2011–2015) 79,927–126,405 birds A4i, B1i, C3
Greater Scaup Aythya marila LC winter (2011–2015) 64,242 birds B2
Gadwall Mareca strepera LC non-breeding (2011–2015) 2,322–3,869 birds B1i, C3
Eurasian Wigeon Mareca penelope LC non-breeding (2011–2015) 21,117–29,837 birds B1i, C3
Northern Pintail Anas acuta LC non-breeding (2011–2015) 842–1,905 birds B1i, C3
Eurasian Coot Fulica atra LC non-breeding (2011–2015) 27,316–62,918 birds B1i, C3
Eurasian Spoonbill Platalea leucorodia LC breeding (2011–2015) 87–114 pairs B1i, C2
Eurasian Spoonbill Platalea leucorodia LC non-breeding (2011–2015) 197–332 birds B1i, C2
Great White Egret Ardea alba LC breeding (2011–2015) 9–35 pairs C6
Great Cormorant Phalacrocorax carbo LC non-breeding (2011–2015) 16,294–20,051 birds B1i, C3
Great Cormorant Phalacrocorax carbo LC breeding (2011–2015) 4,614–6,222 pairs B1i, C3
Eurasian Golden Plover Pluvialis apricaria LC non-breeding (2011–2015) 6,255–11,050 birds C6
Eurasian Curlew Numenius arquata NT non-breeding (2011–2015) 7,898–9,931 birds B1i, C3
Black-tailed Godwit Limosa limosa NT non-breeding (2011–2015) 2,390–2,947 birds B1i, C3
Ruff Calidris pugnax LC non-breeding (2011–2015) 3,929–6,411 birds C6
Black-headed Gull Larus ridibundus LC breeding (2011–2015) 16,141–18,643 pairs B1i, B3, C3
Mediterranean Gull Larus melanocephalus LC breeding (2011–2015) 78 pairs B3, C6
Caspian Tern Hydroprogne caspia LC non-breeding (2011–2015) 67–80 birds B1i, C2, C6
Black Tern Chlidonias niger LC non-breeding (2011–2015) 16,736–22,000 birds A4i, B1i, C2, C6
Common Tern Sterna hirundo LC breeding (2011–2015) 4,646–5,404 pairs B1i, C2, C6
Common Tern Sterna hirundo LC non-breeding (2011–2015) 6,975–8,990 birds C6
A4iii Species group - waterbirds n/a non-breeding (2011–2015) 155,654–203,754 birds A4iii, C4

IBA Conservation

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2016. The most recent assessment (2018) is shown below.

IBA conservation assessment
Year of assessment State Pressure Response
2018 not assessed very high medium
Whole site assessed? State assessed by Accuracy of information
no unset medium

Pressure (threats to the trigger species and/or their habitats)
Threat Timing Scope Severity Result
Agricultural expansion and intensification happe­ning now most of popul­ation/area (50–90%) rapid decline (>30% over 3 gener­ations) very high
Residential and commercial development likely in long term (>4 years) some of popul­ation/area (10–49%) slow decline (1–10% over 3 gener­ations) medium
Human intrusions and disturbance happe­ning now few indivi­duals/small area (<10%) moderate decline (10–30% over 3 gener­ations) low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation Planning Action Result
Whole area (>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

IBA Protection

Year Protected Area Designation (management category) % coverage of IBA
- De Ven Nature Reserve (-) <1
- Onderdijken Nature Reserve (-) <1
- De Ven Nature Conservation Law (-) <1
1982 Stoenckherne Natural Monument (-) <1
1986 Stoenckherne II Natural Monument (-) <1
1991 Friese IJsselmeerkust I Natural Monument (-) <1
1991 Friese IJsselmeerkust II Natural Monument (-) <1
2010 IJsselmeer Natuurbeschermingswet (IV) 100

Habitats

Habitat % of IBA Habitat detail
Marine Coastal/Supratidal 95

Land use

Land use % of IBA
fisheries/aquaculture 100
water management 100
tourism/recreation 100
urban/industrial/transport 15
military 12


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake IJsselmeer (Netherlands). Downloaded from https://datazone.birdlife.org/site/factsheet/lake-ijsselmeer-iba-netherlands on 05/12/2024.