• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

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
Barnacle Goose Branta leucopsis	LC	non-breeding (2011–2015)	11,401–14,000 birds	A4i, B1i, C2

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
Transportation and service corridors	happe­ning now	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	Some limited conservation initiatives are in place	medium

Year	Protected Area	Designation (management category)	% coverage of IBA
-	Ryptsjerkster- en Binnemiedepolder	Nature Reserve (-)	76
2010	Groote Wielen	Natuurbeschermingswet (IV)	100

Habitat	% of IBA	Habitat detail
Artificial/Terrestrial	60	Highly improved re-seeded landscapes
Wetlands (inland)	40	Standing freshwater; Water fringe vegetation

Land use	% of IBA
water management	100
nature conservation and research	85
tourism/recreation	50
fisheries/aquaculture	10
agriculture	6
other	5
hunting	5

---

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Groote Wielen (Netherlands). Downloaded from https://datazone.birdlife.org/site/factsheet/groote-wielen-iba-netherlands on 28/12/2024.