Oostelijke Vechtplassen

IBA Criteria

Year of most recent IBA criteria assessment: 2000

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Ixobrychus minutus NR breeding 1989-1991 3 breeding pairs C6
Black Tern Chlidonias niger LC breeding 1987-1992 66 breeding pairs B2, C2, 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)
2017 medium very unfavourable low
Was the whole site covered? Yes State assessed by Population
Accuracy of information good

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Human intrusions and disturbance recreational activities likely in long term (beyond 4 years) some of area/population (10-49%) slow but significant deterioration medium
Residential and commercial development tourism and recreation areas likely in short term (within 4 years) small area/few individuals (<10%) slow but significant deterioration low

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Spatula clypeata Northern Shoveler 80 689 individuals 100 favourable
Mareca penelope Eurasian Wigeon 2800 21597 individuals 100 favourable
Ixobrychus minutus 10 1 breeding pairs 10 very unfavourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Whole area of site (>90%) covered by appropriate conservation designation No management plan exists but the management planning process has begun Very little or no conservation action taking place low
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)
Wijde Blik Nature Reserve with Management Subsidy 16 protected area contained by site 16
Tienhovense Plassen Nature Reserve 203 protected area contained by site 203
Spiegelplas Nature Reserve 1 protected area contained by site 1
Polder Mijnden Nature Conservation Law 19 protected area contained by site 62
Oostelijke Vechtplassen Ramsar Site, Wetland of International Importance 4,500 protected area overlaps with site 0
Oostelijke Vechtplassen Site of Community Importance (Habitats Directive) 4,401 protected area contained by site 3,270
Oostelijke Vechtplassen Special Protection Area (Birds Directive) 2,520 is identical to site 6,675
Moerasterreinen Loosdrecht Nature Conservation Act 3,329 unknown 0
Moerasterrein Loosdrecht Natural Monument 80 protected area contained by site 80
Loosdrechtse Plassen Nature Reserve 445 protected area contained by site 445
Kortenhoefse Plassen Nature Reserve 328 protected area contained by site 328
Horstermeerpolder II Nature Reserve 51 protected area contained by site 51
Horstermeerpolder Nature Reserve 50 protected area contained by site 50
Het Hol, Kortenhoef Nature Reserve 176 protected area contained by site 176
Ankeveense Plassen Nature Reserve 598 protected area contained by site 598


IUCN Habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest -
Wetlands (inland) Standing freshwater, Water fringe vegetation -
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 -
hunting -
nature conservation and research -
tourism/recreation -
urban/industrial/transport -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2019) Important Bird Areas factsheet: Oostelijke Vechtplassen. Downloaded from on 15/10/2019.