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

The site was identified as important in 2011 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
Ferruginous Duck Aythya nyroca	NT	passage	2007-2011	200-600 individuals	A1, C1
Corncrake Crex crex	LC	breeding	1992-2002	60-100 breeding pairs	C6
Spotted Crake Porzana porzana	LC	breeding	2002-2011	10-30 breeding pairs	C6
Little Crake Zapornia parva	LC	breeding	2002-2011	10-20 breeding pairs	C6
Common Crane Grus grus	LC	passage	2007-2011	500-1,500 individuals	B1i, C2, C6
Ruff Calidris pugnax	LC	passage	2000-2010	1,000-1,500 individuals	C6
Wood Sandpiper Tringa glareola	LC	passage	2000-2010	1,200-1,500 individuals	C6
Hen Harrier Circus cyaneus	LC	winter	2007-2009	10-50 individuals	C6
Red-footed Falcon Falco vespertinus	VU	passage	2000-2009	300-1,500 individuals	A1, C1, C6
Barred Warbler Curruca nisoria	LC	breeding	2008	50-80 breeding pairs	B3, C6

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2011) may differ.

Year	Protected Area	Designation	% overlap with IBA
1992	Drevored Planina - Martinjak Unec	spomenik oblikovane narave	<1
1992	Lipa pri cerkvi - KS Grahovo	naravni spomenik	-
1992	Lipa pri cerkvi v Martinjaku	naravni spomenik	-
2002	Notranjski regijski park	regijski park	95
2004	Osrednje območje življenjskega prostora velikih zveri	ekološko pomembno območje	100
2004	Notranjski trikotnik	ekološko pomembno območje	96
2004	Notranjski Trikotnik	Site of Community Importance (Habitats Directive)	96
2004	Notranjski trikotnik	posebno varstveno območje	96
2004	Cerkniško jezero	Special Protection Area (Birds Directive)	96
2004	Cerkniško jezero	posebno varstveno območje	90
2006	Cerknisko jezero z okolico	Ramsar Site, Wetland of International Importance	100

Habitat1	Habitat detail	% of IBA
Wetlands (inland)	Standing freshwater, Rivers and streams, Raised bogs, Water fringe vegetation, Fens, transition mires and springs	70
Grassland	Humid grasslands, Mesophile grasslands	30

1. IUCN Habitat classification.

Land use	% of IBA
agriculture	40
not utilised	40
tourism/recreation	20

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake Cerknica (Slovenia). Downloaded from https://datazone.birdlife.org/site/factsheet/lake-cerknica-iba-slovenia on 23/11/2024.