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 |
|---|---|---|---|---|
| Eurasian Bittern Botaurus stellaris | LC | breeding (2011–2015) | 12–13 pairs | C6 |
| A4iii Species group - waterbirds | n/a | non-breeding (2011–2015) | 25,322–29,615 birds | A4iii, C4 |
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 | medium |
| 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 |
| Human intrusions and disturbance | happening now | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | high |
| Pollution | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| 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 | Very little or no conservation action taking place | medium |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| - | Varkensland | Nature Reserve (-) | 24 |
| 1984 | Waterland Varkensland | Natural Monument (-) | 14 |
| 2005 | Ilperveld, Varkensland, Oostzanerveld & Twiske | Natuurbeschermingswet (IV) | 100 |
| 2013 | Landgoederen Oldenzaal | Natuurbeschermingswet (IV) | - |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Artificial/Terrestrial | 70 | Highly improved re-seeded landscapes |
| Wetlands (inland) | 22 | Standing freshwater; Water fringe vegetation |
| Forest | 5 | Mixed woodland |
| Land use | % of IBA |
|---|---|
| water management | 100 |
| nature conservation and research | 100 |
| hunting | 70 |
| agriculture | 40 |
| tourism/recreation | 8 |
| fisheries/aquaculture | 5 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Ilperveld, Varkensland, Oostzanerveld & Twiske (Netherlands). Downloaded from
https://datazone.birdlife.org/site/factsheet/ilperveld-varkensland-oostzanerveld-&-twiske-iba-netherlands on 24/12/2024.