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Location Netherlands, Noord-Holland
Central coordinates 4o 50.00' East  52o 31.00' North
IBA criteria A4i, B1i, C2, C3, C6
Area 1,940 ha
Year of IBA assessment 2000

Vogelbescherming Nederland

Site description A polder landscape including a shallow lake, ditches, wet meadows and marshland, situated to the north of the city of Zaandam. This site, together with sites 068, 071 and 072, formed part of a single, larger site (former site NL038) in the previous pan-European IBA inventory (Grimmett and Jones 1989).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Eurasian Wigeon Mareca penelope winter  1991  17,410 individuals  good  B1i, C3  Least Concern 
Eurasian Spoonbill Platalea leucorodia non-breeding  1991  38 individuals  good  B1i, C2  Least Concern 
Black-tailed Godwit Limosa limosa non-breeding  1992  5,500 individuals  medium  A4i, B1i, C3  Near Threatened 
Ruff Calidris pugnax breeding  1993  19 breeding pairs  medium  C6  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Wormer- En Jisperveld Nature Reserve 642 protected area contained by site 642  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Standing freshwater; Water fringe vegetation  17%
Artificial - terrestrial Highly improved re-seeded landscapes  83%

Land use

Land-use Extent (% of site)
agriculture 25%
fisheries/aquaculture 10%
water management 100%
hunting 10%
nature conservation and research 32%
tourism/recreation 11%

Protection status National Partial International None618 ha of IBA covered by Nature Reserve (Wormer- en Jisperveld, 618 ha).

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Recommended citation  BirdLife International (2015) Important Bird Areas factsheet: Wormer-and Jisperveld. Downloaded from on 29/08/2015

To provide new information to update this factsheet or to correct any errors, please email BirdLife