Data Zone
The site was identified as important 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 List1 | Season | Year(s) | Size | IBA criteria |
|---|---|---|---|---|---|
| Purple Heron Ardea purpurea | LC | breeding | 2011-2015 | 133-174 breeding pairs | B1i, C6 |
| Black-headed Gull Larus ridibundus | LC | breeding | 2011-2015 | 4,506-4,524 breeding pairs | B3 |
| Sedge Warbler Acrocephalus schoenobaenus | LC | breeding | 2011-2015 | 825-857 breeding pairs | B3 |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2016) may differ.
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 area/population (>90%) | slow but significant deterioration | high |
| Human intrusions and disturbance | happening now | some of area/population (10-49%) | moderate to rapid deterioration | high |
| Pollution | happening now | majority/most of area/population (50-90%) | moderate to rapid deterioration | high |
| Residential and commercial development | happening now | small area/few individuals (<10%) | moderate to rapid deterioration | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Protected areas | Management plan | Other 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 | The conservation measures needed for the site are being comprehensively and effectively implemented | high |
| Year | Protected Area | Designation | % overlap with IBA |
|---|---|---|---|
| - | De Haeck | Nature Reserve with Management Subsidy | 1 |
| - | De Meije | Nature Reserve | 2 |
| 1968 | Nieuwkoopse Plassen | Nature Conservation Law | 57 |
| 1978 | De Haak | Natural Monument | 3 |
| 1997 | Nieuwkoopse Plassen & De Haeck | Natuurbeschermingswet | 100 |
| 1998 | Nieuwkoopse Plassen & de Haeck | Site of Community Importance (Habitats Directive) | 100 |
| 2000 | Nieuwkoopse Plassen & De Haeck | Special Protection Area (Birds Directive) | 100 |
| Habitat1 | Habitat detail | % of IBA |
|---|---|---|
| Wetlands (inland) | Standing freshwater, Water fringe vegetation | 69 |
| Artificial/Terrestrial | Highly improved re-seeded landscapes | 27 |
| 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 23/11/2024.