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Location Netherlands, Zuid-Holland
Central coordinates 4o 15.00' East  51o 46.00' North
IBA criteria A4i, A4iii, B1i, B2, B3, C2, C3, C4, C6
Area 10,900 ha
Altitude
Year of IBA assessment 2000

Vogelbescherming Nederland



Site description Together with the adjoining Hollands Diep (025), this is one of the former estuaries of the Rhine/Maas river system, closed from the sea in 1970. Essentially a 27-km long stagnant freshwater lake, bordered by reedbeds, willow Salix scrub and wet meadows. The water-level varies, depending on the river supply. The site is separated at the west end from the Hollands Diep by a bridge and from Lake Volkerak (026) by a dam. This site, together with site 025, formed part of a single, larger site (former site NL047) in the previous pan-European IBA inventory (Grimmett and Jones 1989).

Key Biodiversity The open water and sandbanks are used as a roost by large numbers of geese Anser from the surrounding arable and grassland polders (no counts are available). The grassland bordering the Haringvliet is important as a feeding site for Branta leucopsis and as a breeding area for waders and marsh species. The area holds two breeding colonies of Sterna hirundo (one also in use by Sterna albifrons). The mean total of waterbirds in January exceeds 20,000.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Greylag Goose Anser anser non-breeding  1992  4,001 individuals  good  A4i, B1i, C3  Least Concern 
Barnacle Goose Branta leucopsis winter  1991  15,818 individuals  good  A4i, B1i, B2, C2, C6  Least Concern 
Gadwall Mareca strepera non-breeding  1992  484 individuals  good  B1i, C3  Least Concern 
Eurasian Wigeon Mareca penelope winter  1992  15,623 individuals  good  B1i, C3  Least Concern 
Pied Avocet Recurvirostra avosetta breeding  1991  86 breeding pairs  good  B3  Least Concern 
Common Tern Sterna hirundo breeding  1991  864 breeding pairs  good  C2, C6  Least Concern 
Little Tern Sternula albifrons breeding  1991  24 breeding pairs  good  B2, C6  Least Concern 
A4iii Species group - waterbirds winter  1991-1992  20,000-49,999 individuals  unknown  A4iii, C4   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
's Lands bekade Gorzen Natural Monument 130 protected area contained by site 130  
Beninger Slikken Natural Monument 380 protected area contained by site 380  
Beningerslikken Nature Reserve 377 protected area contained by site 377  
Blanke Slikken Natural Monument 200 protected area contained by site 200  
Blanke Slikken Nature Reserve 275 protected area contained by site 275  
Gorzen Oosterse Laagjes Natural Monument 55 protected area contained by site 55  
Grasgorzen Griendweipolder Natural Monument 18 protected area contained by site 18  
Grasgorzen Haringvliet Nature Reserve 322 protected area contained by site 322  
Grasgorzen Stad a/h Haringvliet-Den Bomm Natural Monument 60 protected area contained by site 60  
Grasgorzen tussen Den Bommel en de Hellegatsdam Natural Monument 70 protected area contained by site 70  
Haringvliet Wetlands of International Importance (Ramsar) 10,800 protected area overlaps with site 10,800  
Haringvliet - NL1000015 Habitats Directive 11,108 protected area contains site 10,900  
Haringvliet - NL9802018 Birds Directive 10,796 is identical to site 10,791  
Kleiput in de Tiendgorzen Natural Monument 13 protected area contained by site 13  
Korendijkse Slikken Natural Monument 400 protected area contained by site 400  
Korendijkse Slikken Nature Reserve 461 protected area contained by site 461  
Leenheren Buitengorzen Natural Monument 14 protected area contained by site 14  
Oosterse Laagjes Natural Monument 30 protected area contained by site 30  
Quackgors Nature Reserve 26 protected area contained by site 26  
Quackgors I Natural Monument 24 protected area contained by site 24  
Riet- en grasgorzen II Quackgors Natural Monument 45 protected area contained by site 45  
Riet- en grasgorzen II Westerse Laagjes Natural Monument 5 protected area contained by site 5  
Rietgorzen Oosterse Laagjes Natural Monument 5 protected area contained by site 5  
Rietgorzen Stad a/h Haringvliet-Den Bommel Natural Monument 60 protected area contained by site 60  
Scheelhoek Natural Monument 380 protected area contained by site 380  
Scheelhoek Nature Reserve 30 protected area contained by site 30  
Slijkplaat Natural Monument 190 protected area contained by site 190  
Ventjagersplaten ten noorden van de Hellegatsdam Natural Monument 900 protected area contained by site 900  
Voornes Duin - NL9803077 Habitats Directive 1,421 protected area is adjacent to site 0  
Westerse Laagjes Natural Monument 60 protected area contained by site 60  
Westplaat buitengronden en Meneersche Plaat Natural Monument 70 protected area contained by site 70  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Standing freshwater; Water fringe vegetation  87%
Artificial - terrestrial Highly improved re-seeded landscapes  13%

Land use

Land-use Extent (% of site)
agriculture 5%
other 5%
fisheries/aquaculture 65%
water management 100%
hunting 80%
nature conservation and research 32%
tourism/recreation 80%
urban/industrial/transport 51%

Protection status National Partial International None190 ha of IBA covered by Natural Monument (Slijkplaat, 190 ha). 900 ha of IBA covered by Natural Monument (Ventjagersplaten ten noorden van de Hellegatsdam, 900 ha). 60 ha of IBA covered by Natural Monument (Westerse Laagjes, 60 ha). 70 ha of IBA covered by Natural Monument (Westplaat buitengronden en Meneersche Plaat, 70 ha). 24 ha of IBA covered by Natural Monument (Quackgors I, 24 ha). 45 ha of IBA covered by Natural Monument (Riet-en grasgorzen II Quackgors, 45 ha). 10 ha of IBA covered by Natural Monument (Riet- en grasgorzen II Quackgors, 10 ha). 5 ha of IBA covered by Natural Monument (Riet- en grasgorzen II Westerse Laagjes, 5 ha). 5 ha of IBA covered by Natural Monument (Rietgorzen Oosterse Laagjes, 5 ha). 60 ha of IBA covered by Natural Monument (Rietgorzen Stad a/h Haringvliet-Den Bommel, 60 ha). 380 ha of IBA covered by Natural Monument (Scheelhoek, 380 ha). 130 ha of IBA covered by Natural Monument (`s Lands bekade Gorzen, 130 ha). 380 ha of IBA covered by Natural Monument (Beninger Slikken, 380 ha). 20 ha of IBA covered by Natural Monument (Beninger Slikken, 20 ha). 54 ha of IBA covered by Natural Monument (Blanke Slikken, 54 ha). 200 ha of IBA covered by Natural Monument (Blanke Slikken, 200 ha). 55 ha of IBA covered by Natural Monument (Gorzen Oosterse Laagjes, 55 ha). 18 ha of IBA covered by Natural Monument (Grasgorzen Griendweipolder, 18 ha). 60 ha of IBA covered by Natural Monument (Grasgorzen Stad a/h Haringvliet-Den Bomm, 60 ha). 70 ha of IBA covered by Natural Monument (Grasgorzen tussen Den Bommel en de Hellegatsdam, 70 ha). 13 ha of IBA covered by Natural Monument (Kleiput in de Tiendgorzen, 13 ha). 400 ha of IBA covered by Natural Monument (Korendijkse Slikken, 400 ha). 14 ha of IBA covered by Natural Monument (Leenheren Buitengorzen, 14 ha). 30 ha of IBA covered by Natural Monument (Oosterse Laagjes, 30 ha). 461 ha of IBA covered by Nature Reserve (Korendijkse Slikken, 461 ha). 322 ha of IBA covered by Nature Reserve (Grasgorzen Haringvliet, 322 ha). 275 ha of IBA covered by Nature Reserve (Blanke Slikken, 275 ha). 377 ha of IBA covered by Nature Reserve (Beningerslikken, 377 ha). 26 ha of IBA covered by Nature Reserve (Quackgors, 26 ha). 30 ha of IBA covered by Nature Reserve (Scheelhoek, 30 ha).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Haringvliet. Downloaded from http://www.birdlife.org on 26/12/2014

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