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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
Mute Swan Cygnus olor	LC	non-breeding (2011–2015)	3,677–4,367 birds	B1i, C3
Barnacle Goose Branta leucopsis	LC	breeding (2011–2015)	2,322–2,749 pairs	B3, C6
Barnacle Goose Branta leucopsis	LC	non-breeding (2011–2015)	30,670–36,107 birds	A4i, B1i, C2
Barnacle Goose Branta leucopsis	LC	winter (2011–2015)	31,334 birds	B3
Greylag Goose Anser anser	LC	non-breeding (2011–2015)	12,971–19,850 birds	A4i, B1i, C3
Red-breasted Merganser Mergus serrator	LC	breeding (2011–2015)	25–29 pairs	B2
Northern Shoveler Spatula clypeata	LC	non-breeding (2011–2015)	2,313–4,340 birds	B1i, C3
Gadwall Mareca strepera	LC	non-breeding (2011–2015)	10,138–16,284 birds	B1i, C3
Eurasian Wigeon Mareca penelope	LC	non-breeding (2011–2015)	20,558–37,858 birds	B1i, C3
Northern Pintail Anas acuta	LC	non-breeding (2011–2015)	723–1,124 birds	B1i, C3
Common Teal Anas crecca	LC	non-breeding (2011–2015)	10,561–13,575 birds	B1i, C3
Eurasian Spoonbill Platalea leucorodia	LC	non-breeding (2011–2015)	362–437 birds	B1i, C2, C6
Little Egret Egretta garzetta	LC	non-breeding (2011–2015)	41–49 birds	C6
Little Egret Egretta garzetta	LC	breeding (2011–2015)	1–2 pairs	C6
Black-headed Gull Larus ridibundus	LC	breeding (2011–2015)	4,753–5,446 pairs	B3
Mediterranean Gull Larus melanocephalus	LC	breeding (2011–2015)	329–579 pairs	B3, C2, C6
Lesser Black-backed Gull Larus fuscus	LC	breeding (2011–2015)	2,158–2,593 pairs	B1i, C3
Caspian Tern Hydroprogne caspia	LC	non-breeding (2011–2015)	4 birds	C6
Common Tern Sterna hirundo	LC	non-breeding (2011–2015)	1,169–1,505 birds	C6
Sandwich Tern Thalasseus sandvicensis	LC	breeding (2011–2015)	1,959–3,307 pairs	A4i, B1i, B3, C2, C6
Osprey Pandion haliaetus	LC	non-breeding (2011–2015)	4–5 birds	C6
Peregrine Falcon Falco peregrinus	LC	breeding (2011–2015)	1 pairs	C6
Bluethroat Luscinia svecica	LC	breeding (2011–2015)	374 pairs	C6
A4iii Species group - waterbirds	n/a	non-breeding (2011–2015)	88,293–97,494 birds	A4iii, C4

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.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Energy production and mining	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Natural system modifications	likely in short term (<4 years)	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Human intrusions and disturbance	likely in long term (>4 years)	most of popul­ation/area (50–90%)	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
-	Blanke Slikken	Nature Reserve (-)	3
-	Korendijkse Slikken	Nature Reserve (-)	4
-	Quackgors	Nature Reserve (-)	<1
-	Grasgorzen Haringvliet	Nature Reserve (-)	3
-	Beningerslikken	Nature Reserve (-)	3
-	Scheelhoek	Nature Reserve (-)	<1
1971	's Lands bekade Gorzen	Natural Monument (-)	1
1971	Grasgorzen Griendweipolder	Natural Monument (-)	<1
1971	Grasgorzen tussen Den Bommel en de Hellegatsdam	Natural Monument (-)	1
1971	Grasgorzen Stad a/h Haringvliet-Den Bomm	Natural Monument (-)	1
1971	Westplaat buitengronden en Meneersche Plaat	Natural Monument (-)	1
1971	Quackgors I	Natural Monument (-)	<1
1971	Westerse Laagjes	Natural Monument (-)	1
1971	Oosterse Laagjes	Natural Monument (-)	<1
1978	Korendijkse Slikken	Natural Monument (-)	4
1978	Blanke Slikken	Natural Monument (-)	2
1979	Leenheren Buitengorzen	Natural Monument (-)	<1
1979	Kleiput in de Tiendgorzen	Natural Monument (-)	<1
1980	Scheelhoek	Natural Monument (-)	3
1980	Ventjagersplaten ten noorden van de Hellegatsdam	Natural Monument (-)	8
1980	Beninger Slikken	Natural Monument (-)	3
1980	Rietgorzen Stad a/h Haringvliet-Den Bommel	Natural Monument (-)	1
1980	Slijkplaat	Natural Monument (-)	2
1981	Riet- en grasgorzen II Westerse Laagjes	Natural Monument (-)	<1
1981	Rietgorzen Oosterse Laagjes	Natural Monument (-)	<1
1981	Gorzen Oosterse Laagjes	Natural Monument (-)	1
1982	Riet- en grasgorzen II Quackgors	Natural Monument (-)	<1
2000	Haringvliet	Natuurbeschermingswet (IV)	100

Habitat	% of IBA	Habitat detail
Marine Coastal/Supratidal	87
Artificial/Terrestrial	13	Highly improved re-seeded landscapes

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

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Haringvliet (Netherlands). Downloaded from https://datazone.birdlife.org/site/factsheet/haringvliet-iba-netherlands on 22/12/2024.