NL025
Hollands Diep


IBA Criteria

Year of most recent IBA criteria assessment: 2016

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Gadwall Mareca strepera LC non-breeding 2011-2016 1,617-2,310 individuals B1i, C3
Eurasian Spoonbill Platalea leucorodia LC breeding 2011-2016 69-104 breeding pairs B1i
Little Egret Egretta garzetta LC breeding 2011-2016 2-6 breeding pairs C6

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here


IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2018 very high not assessed high
Was the whole site covered? Yes State assessed by unset
Accuracy of information medium

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Agricultural expansion and intensification annual & perennial non-timber crops - shifting agriculture happening now small area/few individuals (<10%) no or imperceptible deterioration low
Climate change and severe weather habitat shifting and alteration happening now whole area/population (>90%) moderate to rapid deterioration very high
Energy production and mining renewable energy happening now majority/most of area/population (50-90%) moderate to rapid deterioration high
Human intrusions and disturbance recreational activities likely in short term (within 4 years) majority/most of area/population (50-90%) moderate to rapid deterioration high
Pollution domestic & urban waste water - run-off happening now whole area/population (>90%) very rapid to severe deterioration very high
Residential and commercial development tourism and recreation areas likely in short term (within 4 years) some of area/population (10-49%) moderate to rapid deterioration medium
Transportation and service corridors flight paths happening now small area/few individuals (<10%) no or imperceptible deterioration low

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation 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 Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity high
For more information about IBA monitoring please click here

IBA Protection

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Oosterse Slobbegorzen Natural Monument 55 protected area contained by site 55
Hoogezandse Gorzen Natural Monument 40 protected area contained by site 40
Hollands Diep Natuurbeschermingswet 4,225 protected area contains site 0
Hollands Diep Site of Community Importance (Habitats Directive) 591 protected area overlaps with site 335
Hollands Diep Special Protection Area (Birds Directive) 4,139 is identical to site 3,973
Hollands Diep Ramsar Site, Wetland of International Importance 4,050 protected area overlaps with site 4,050
Esscheplaat, Zeehondenplaat en Sasseplaat II Natural Monument 30 protected area contained by site 30
Esscheplaat, Zeehondenplaat en Sasseplaat Natural Monument 235 protected area contained by site 235
Esscheplaat Nature Conservation Law 97 protected area contained by site 97

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Wetlands (inland) Standing freshwater -
Artificial/Terrestrial Highly improved re-seeded landscapes -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
water management -
nature conservation and research -
tourism/recreation -
urban/industrial/transport -
hunting -
For further information about the land use classification please click here.


Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Hollands Diep. Downloaded from http://www.birdlife.org on 23/09/2020.