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The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Northern Shoveler Spatula clypeata	LC	non-breeding	2011-2015	689-1,330 individuals	B1i, C3
Eurasian Wigeon Mareca penelope	LC	non-breeding	2011-2015	21,597-31,870 individuals	B1i, C3
Baillon's Crake Zapornia pusilla	LC	breeding	2011-2015	1-2 breeding pairs	C6
Common Little Bittern Ixobrychus minutus	LC	breeding	2011-2015	1-2 breeding pairs	C6
Black-crowned Night Heron Nycticorax nycticorax	LC	breeding	2011-2015	1 breeding pairs	C6
A4iii Species group - waterbirds	n/a	non-breeding	2011-2015	35,558-51,009 individuals	A4iii, C4

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2016) may differ.

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
Invasive and other problematic species and genes	happening now	whole area/population (>90%)	very rapid to severe deterioration	very high
Residential and commercial development	likely in long term (beyond 4 years)	majority/most of area/population (50-90%)	very rapid to severe deterioration	high
Human intrusions and disturbance	likely in short term (within 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium
Pollution	likely in long term (beyond 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium
Natural system modifications	likely in long term (beyond 4 years)	some of area/population (10-49%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	No management plan exists but the management planning process has begun	Some limited conservation initiatives are in place	low

Year	Protected Area	Designation	% overlap with IBA
-	Polder Mijnden	Nature Conservation Law	1
-	Kortenhoefse Plassen	Nature Reserve	5
-	Wijde Blik	Nature Reserve with Management Subsidy	<1
-	Horstermeerpolder	Nature Reserve	1
-	Tienhovense Plassen	Nature Reserve	3
-	Het Hol, Kortenhoef	Nature Reserve	3
-	Spiegelplas	Nature Reserve	<1
-	Ankeveense Plassen	Nature Reserve	9
-	Horstermeerpolder II	Nature Reserve	1
-	Loosdrechtse Plassen	Nature Reserve	7
1986	Weerribben	Natuurbeschermingswet	-
1991	Moerasterrein Loosdrecht	Natural Monument	1
2000	Oostelijke Vechtplassen	Special Protection Area (Birds Directive)	100
2000	Oostelijke Vechtplassen	Ramsar Site, Wetland of International Importance	96
2002	Oostelijke Vechtplassen	Site of Community Importance (Habitats Directive)	51
2004	Oostelijke Vechtplassen	Natuurbeschermingswet	100

Habitat1	Habitat detail	% of IBA
Wetlands (inland)	Standing freshwater, Water fringe vegetation	75
Forest	Alluvial and very wet forest	20
Artificial/Terrestrial	Highly improved re-seeded landscapes	5

1. IUCN Habitat classification.

Land use	% of IBA
water management	100
hunting	80
tourism/recreation	65
fisheries/aquaculture	60
nature conservation and research	27
urban/industrial/transport	8
agriculture	5

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Oostelijke Vechtplassen (Netherlands). Downloaded from https://datazone.birdlife.org/site/factsheet/oostelijke-vechtplassen-iba-netherlands on 22/11/2024.