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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'):

Species	Current IUCN Red List Category	Season	Year(s)	Population estimate at site	IBA criteria met
Barnacle Goose Branta leucopsis	LC	breeding	2011-2015	536-600 breeding pairs	B3, C6
Common Pochard Aythya ferina	VU	non-breeding	2011-2015	2,467 individuals	A1, C1
Common Pochard Aythya ferina	VU	winter	2011-2015	1,269 individuals	B2
Gadwall Mareca strepera	LC	non-breeding	2011-2015	1,564-3,981 individuals	B1i, C3
Eurasian Spoonbill Platalea leucorodia	LC	breeding	2011-2015	133-187 breeding pairs	B1i, B3, C2, C6
Kentish Plover Charadrius alexandrinus	LC	breeding	2011-2015	8-21 breeding pairs	C6

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2016).

State (condition of the trigger species' populations)
Scientific name	Common name	Reference population	Actual population	Units	% of population remaining	Result
Mareca strepera	Gadwall	280	1564	individuals	100	favourable
Platalea leucorodia	Eurasian Spoonbill	20	133	breeding pairs	100	favourable
Charadrius alexandrinus	Kentish Plover	220	8	breeding pairs	4	very unfavourable

Pressure (threats to the trigger species and/or their habitats)
Threat level 1	Threat level 2	Timing	Scope	Severity	Result
Pollution	agricultural & forestry effluents - nutrient loads	happening now	majority/most of area/population (50-90%)	very rapid to severe deterioration	very high

Response (conservation actions taken for the trigger species and/or their habitats)
Protected-area designation	Management planning	Other conservation action	Result
Whole area of site (>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	Very little or no conservation action taking place	medium

For more information about IBA conservation status, please click here

Protected area (PA)	PA designation	PA area (ha)	Relationship of PA with IBA	Overlap of PA with IBA (ha)
Zoommeer	Ramsar Site, Wetland of International Importance	1,175	protected area is adjacent to site	0
Oosterschelde	Ramsar Site, Wetland of International Importance	38,000	protected area overlaps with site	2,030
Molenplaat	Nature Reserve	107	protected area contained by site	107
Markiezaatsmeer-Zuid II	Natural Monument	160	protected area contained by site	160
Markiezaatsmeer Zuid	Natural Monument	1,700	protected area contained by site	1,700
Markiezaat	Ramsar Site, Wetland of International Importance	1,832	is identical to site	0
Markiezaat	Natuurbeschermingswet	1,832	is identical to site	1,300
Markiezaat	Special Protection Area (Birds Directive)	1,832	is identical to site	1,800

Habitat (IUCN level 1)	Habitat detail	Extent (% of site)
Wetlands (inland)	Standing freshwater, Water fringe vegetation	-
Artificial/Terrestrial	Highly improved re-seeded landscapes	-

For more information about the IUCN Habitat classification, please click here.

Land-use	Extent (% of site)
nature conservation and research	-
agriculture	-
hunting	-

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Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Markiezaat. Downloaded from http://datazone.birdlife.org/site/factsheet/markiezaat-iba-netherlands on 01/10/2023.