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