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Location Slovenia, Notranjska
Central coordinates 14o 15.00' East  45o 51.00' North
IBA criteria B3, C6
Area 1,600 ha
Altitude 440 - 453m
Year of IBA assessment 2011

Drustvo Za Opazovanje in Proucevanje Ptic Slovenije

Site description Planinsko polje is part of the karst basin of the Ljubljanica river, and displays typical karst features such as caves (more than 100 in the vicinity) and sink-holes. Higher hills surround the IBA, from where water collects and sinks underground. Floods periodically cover about 16 km2 of the area. Besides the numerous small streams, the Unica river with its beautiful meanders is the main water-body at the site. Arable land and human settlements occur at the outermost, higher edges of the site. Land-use is mainly mowing of grass and hay; some farmers use fertilizer to increase grass production. This has been a classic area for karst research since the 17th century.

Key Biodiversity An important site for breeding Crex crex. Other wet meadow and grassland bird species breed at the site in nationally important numbers, including many SPECs. Significant proportion (³1%) of national population breeding at site: Alcedo atthis (2-5 pairs). The site is known to support notable numbers of birds on migration as well.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Corncrake Crex crex breeding  1992-2002  30-40 breeding pairs  C6  Least Concern 
Barred Warbler Sylvia nisoria breeding  2008  55-90 breeding pairs  B3, C6  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Planina - Planinsko polje Landscape Park 613 protected area contained by site 960  


IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland  5%
Shrubland Scrub  5%
Grassland Humid grasslands; Mesophile grasslands; Steppes and dry calcareous grassland  70%
Wetlands (inland) Rivers and streams; Water fringe vegetation  15%
Caves and subterranean habitats (non-aquatic) Caves  -
Artificial - terrestrial Highly improved re-seeded landscapes  5%

Land use

Land-use Extent (% of site)
agriculture 90%
nature conservation and research 5%
tourism/recreation 5%

Protection status National Partial International None960 ha of IBA covered by Landscape Park (Krajinski park Planinsko polje, 960 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Planina polje. Downloaded from on 27/10/2016

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