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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
Greater White-fronted Goose Anser albifrons	LC	non-breeding (2011–2015)	10,178–12,136 birds	B1i, C3
Eurasian Wigeon Mareca penelope	LC	non-breeding (2011–2015)	37,560–54,141 birds	A4i, B1i, C3
Eurasian Wigeon Mareca penelope	LC	winter (2011–2015)	24,811 birds	B3
A4iii Species group - waterbirds	n/a	non-breeding (2011–2015)	65,941–86,361 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
Agricultural expansion and intensification	happe­ning now	most of popul­ation/area (50–90%)	moderate decline (10–30% over 3 gener­ations)	high
Human intrusions and disturbance	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

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	Some limited conservation initiatives are in place	medium

Year	Protected Area	Designation (management category)	% coverage of IBA
-	Groote Braak (Braken IJsselmeerdijk)	Nature Reserve (-)	1
-	Zeevang	Nature Reserve (-)	11
2010	Polder Zeevang	Natuurbeschermingswet (IV)	100

Habitat	% of IBA	Habitat detail
Artificial/Terrestrial	98	Highly improved re-seeded landscapes
Wetlands (inland)	-	Water fringe vegetation

Land use	% of IBA
water management	100
agriculture	25
nature conservation and research	17
hunting	15
urban/industrial/transport	7

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Polder Zeevang (Netherlands). Downloaded from https://datazone.birdlife.org/site/factsheet/polder-zeevang-iba-netherlands on 23/12/2024.