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The site was identified as internationally important for bird conservation in 2003 because it was regularly supporting significant populations of the species listed below, meeting IBA criteria.

Populations meeting IBA criteria ('key species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Eurasian Golden Plover Pluvialis apricaria	LC	breeding (2002)	100–150 breeding pairs	C6
Wood Sandpiper Tringa glareola	LC	breeding (2002)	70–100 breeding pairs	C6

Year	Protected Area	Designation (management category)	% coverage of IBA
1997	Marimetsa LKA, Marimetsa skv.	Looduskaitseala hooldatav sihtkaitsevöönd (IV)	55
2005	Marimetsa-Õmma hoiuala (Harjumaa)	Hoiuala (VI)	1
2005	Õmma püsielupaik	Species Protection Site (-)	8
2006	Marimetsa-Õmma hoiuala (Rapla)	Hoiuala (VI)	16
2006	Marimetsa LKA, Kullamaa pv.	Looduskaitseala piiranguvöönd (VI)	6
2006	Marimetsa LKA, Kalju pv.	Looduskaitseala piiranguvöönd (VI)	2
2006	Marimetsa LKA, Kaasiku pv.	Looduskaitseala piiranguvöönd (VI)	1
2006	Marimetsa LKA, Palivere pv.	Looduskaitseala piiranguvöönd (VI)	1
2006	Marimetsa LKA, Risti pv.	Looduskaitseala piiranguvöönd (VI)	<1
2006	Marimetsa-Õmma hoiuala	Limited Management Zone (-)	22
2009	Tõlva püsielupaik	Species Protection Site (-)	1
2017	Marimetsa-Õmma hoiuala (Läänemaa)	Hoiuala (VI)	5

Habitat	% of IBA	Habitat detail
Wetlands (inland)	36	Raised bogs; Fens, transition mires and springs
Forest	35	Native coniferous woodland; Mixed woodland; Broadleaved deciduous woodland
Shrubland	28

Land use	% of IBA
nature conservation and research	95
forestry	30

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Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Marimetsa-Õmma (Estonia). Downloaded from https://datazone.birdlife.org/site/factsheet/marimetsa-õmma-iba-estonia on 09/01/2025.