NL076
Nieuwkoopse Plassen & De Haeck


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
Purple Heron Ardea purpurea LC breeding (2011–2015) 133–174 pairs B1i, C6
Black-headed Gull Larus ridibundus LC breeding (2011–2015) 4,506–4,524 pairs B3
Sedge Warbler Acrocephalus schoenobaenus LC breeding (2011–2015) 825–857 pairs B3

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 high high
Whole site assessed? State assessed by Accuracy of information
yes unset medium

Pressure (threats to the trigger species and/or their habitats)
Threat Timing Scope Severity Result
Transportation and service corridors happe­ning now whole of popul­ation/area (>90%) slow decline (1–10% over 3 gener­ations) high
Pollution happe­ning now most of popul­ation/area (50–90%) moderate decline (10–30% over 3 gener­ations) high
Human intrusions and disturbance happe­ning now some of popul­ation/area (10–49%) moderate decline (10–30% over 3 gener­ations) high
Residential and commercial development 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 The conservation measures needed for the site are being compre­hensively and effectively implemented high

IBA Protection

Year Protected Area Designation (management category) % coverage of IBA
- De Meije Nature Reserve (-) 2
- De Haeck Nature Reserve with Management Subsidy (-) 1
1968 Nieuwkoopse Plassen Nature Conservation Law (IV) 57
1978 De Haak Natural Monument (-) 3
1997 Nieuwkoopse Plassen & De Haeck Natuurbeschermingswet (IV) 100

Habitats

Habitat % of IBA Habitat detail
Wetlands (inland) 69 Standing freshwater; Water fringe vegetation
Artificial/Terrestrial 27 Highly improved re-seeded landscapes

Land use

Land use % of IBA
water management 100
nature conservation and research 59
fisheries/aquaculture 30
tourism/recreation 27
hunting 25


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Nieuwkoopse Plassen & De Haeck (Netherlands). Downloaded from https://datazone.birdlife.org/site/factsheet/nieuwkoopse-plassen-&-de-haeck-iba-netherlands on 24/12/2024.