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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
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

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 (2017) is shown below.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Gadwall Mareca strepera	280	1,564	individuals	100	favourable
Eurasian Spoonbill Platalea leucorodia	20	133	breeding pairs	100	favourable
Kentish Plover Charadrius alexandrinus	220	8	breeding pairs	4	very unfavourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Pollution	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 areas	Management plan	Other 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

Year	Protected Area	Designation	% overlap with IBA
-	Molenplaat	Nature Reserve	6
1982	Markiezaatsmeer-Zuid II	Natural Monument	9
1985	Markiezaatsmeer Zuid	Natural Monument	93
1987	Markiezaat	Ramsar Site, Wetland of International Importance	100
1987	Oosterschelde	Ramsar Site, Wetland of International Importance	100
2000	Markiezaat	Special Protection Area (Birds Directive)	100
2010	Markiezaat	Natuurbeschermingswet	100

Habitat1	Habitat detail	% of IBA
Marine Coastal/Supratidal		82
Artificial/Terrestrial	Highly improved re-seeded landscapes	18

1. IUCN Habitat classification.

Land use	% of IBA
nature conservation and research	92
agriculture	10
hunting	10

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Markiezaat (Netherlands). Downloaded from https://datazone.birdlife.org/site/factsheet/markiezaat-iba-netherlands on 23/11/2024.