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 |
|---|---|---|---|---|
| Gadwall Mareca strepera | LC | non-breeding (2011–2015) | 1,617–2,310 birds | B1i, C3 |
| Eurasian Spoonbill Platalea leucorodia | LC | breeding (2011–2015) | 69–104 pairs | B1i |
| Little Egret Egretta garzetta | LC | breeding (2011–2015) | 2–6 pairs | C6 |
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 | 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 |
| Pollution | happening now | whole of population/area (>90%) | rapid decline (>30% over 3 generations) | very high |
| Climate change and severe weather | happening now | whole of population/area (>90%) | moderate decline (10–30% over 3 generations) | very high |
| Energy production and mining | happening now | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Human intrusions and disturbance | likely in short term (<4 years) | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Residential and commercial development | likely in short term (<4 years) | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | medium |
| Agricultural expansion and intensification | happening now | few individuals/small area (<10%) | no or slight decline (<1% over 3 generations) | low |
| Transportation and service corridors | happening now | few individuals/small area (<10%) | no or slight decline (<1% 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 | Substantive conservation measures are being implemented, but these are not comprehensive and are limited by resources and capacity | high |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| - | Esscheplaat | Nature Conservation Law (-) | 2 |
| 1971 | Hoogezandse Gorzen | Natural Monument (-) | 1 |
| 1981 | Oosterse Slobbegorzen | Natural Monument (-) | 1 |
| 1981 | Esscheplaat, Zeehondenplaat en Sasseplaat II | Natural Monument (-) | 1 |
| 1981 | Esscheplaat, Zeehondenplaat en Sasseplaat | Natural Monument (-) | 6 |
| 2003 | Hollands Diep | Natuurbeschermingswet (IV) | 100 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Wetlands (inland) | 90 | Standing freshwater |
| Artificial/Terrestrial | 10 | Highly improved re-seeded landscapes |
| Land use | % of IBA |
|---|---|
| water management | 100 |
| tourism/recreation | 90 |
| fisheries/aquaculture | 80 |
| hunting | 30 |
| urban/industrial/transport | 10 |
| nature conservation and research | 8 |
| agriculture | 5 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Hollands Diep (Netherlands). Downloaded from
https://datazone.birdlife.org/site/factsheet/hollands-diep-iba-netherlands on 25/12/2024.