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Location Slovenia, Primorska
Central coordinates 13o 55.00' East  45o 40.00' North
IBA criteria B2, C6
Area 57,860 ha
Altitude 150 - 1,028m
Year of IBA assessment 2011

Drustvo Za Opazovanje in Proucevanje Ptic Slovenije



Site description The north-western ridge of the Dinaric mountains. A flat to hilly limestone area, after which the term `karst' was named, with a rich diversity of karst features such as caves, sink-holes, dolinas and canyons. Rocky and sparsely vegetated until the beginning of the 20th century, the area is now partly afforested (Pinus nigra). Land-use has been abandoned over vast areas which are now undergoing natural succession to shrubland and forest. The region is now a mosaic of dry and rocky meadows and pastures, shrublands in various stages of succession, and woods. There is a strong Mediterranean component to the flora and fauna.

Key Biodiversity Several species of European conservation concern (SPECs), typical of woodland, meadow and pasture, breed in important numbers, and numerous other SPECs breed in less significant numbers. Significant proportion (³1%) of national population breeding at site: Carduelis chloris (min. 500 pairs). Nationally, Karst is also notable as a wintering site for many species because of its favourable climate (low snow-cover, etc.).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Rock Partridge Alectoris graeca breeding  2002-2010  5-10 breeding pairs  C6  Near Threatened 
Short-toed Snake-eagle Circaetus gallicus breeding  2000-2010  5-10 breeding pairs  B2, C6  Least Concern 
Griffon Vulture Gyps fulvus breeding  2000-2010  90-100 breeding pairs  C6  Least Concern 
Eurasian Scops-owl Otus scops breeding  2006-2010  120-200 breeding pairs  B2  Least Concern 
Eurasian Eagle-owl Bubo bubo breeding  2004-2011  9-16 breeding pairs  B2, C6  Least Concern 
European Nightjar Caprimulgus europaeus breeding  2002-2010  500-800 breeding pairs  B2, C6  Least Concern 
Wood Lark Lullula arborea breeding  2002-2010  1,100-1,500 breeding pairs  B2, C6  Least Concern 
Tawny Pipit Anthus campestris breeding  1995-2010  20-30 breeding pairs  C6  Least Concern 
Rock Bunting Emberiza cia breeding  2002-2010  1,600-1,800 breeding pairs  B2  Least Concern 
Ortolan Bunting Emberiza hortulana breeding  2000-2010  90-130 breeding pairs  C6  Least Concern 

IBA Monitoring

2015 very high very unfavourable medium
Population
Good - based on reliable and complete / representative data

Energy production and mining renewable energy happening now some of area/population (10-49%) moderate to rapid deterioration high
Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) very rapid to severe deterioration high
Natural system modifications other ecosystem modifications happening now whole area/population (>90%) very rapid to severe deterioration very high
Residential and commercial development housing and urban areas happening now some of area/population (10-49%) moderate to rapid deterioration high
Residential and commercial development tourism and recreation areas likely in short term (within 4 years) small area/few individuals (<10%) very rapid to severe deterioration low
Transportation and service corridors utility & service lines happening now some of area/population (10-49%) moderate to rapid deterioration high

Grassland Steppes and dry calcareous grassland  0 0 good (> 90%) poor (40-69%) unfavourable

Circaetus gallicus Short-toed Snake-eagle 7 6 breeding pairs 86 near favourable
Emberiza hortulana Ortolan Bunting 110 5 breeding pairs 5 very unfavourable

Whole area of site (>90%) covered by appropriate conservation designation  A management plan exists but it is out of date or not comprehensive  Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity  medium 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Regijski Park Skocjanske jame Regional Park 401 protected area contained by site 413  
Škocjan Caves World Heritage Site 413 protected area contained by site 413  
Skocjanske Jame (Skocjan Caves) Wetlands of International Importance (Ramsar) 305 protected area contained by site 305  
Vremscica Landscape Park 93 protected area contained by site 93  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Forest Native coniferous woodland  50%
Shrubland Scrub  30%
Grassland Steppes and dry calcareous grassland  10%
Caves and subterranean habitats (non-aquatic) Caves  -
Artificial - terrestrial Arable land; Forestry plantations; Other urban and industrial areas  30%
Rocky areas Inland cliffs  -

Land use

Land-use Extent (% of site)
agriculture 10%
forestry 40%
urban/industrial/transport 10%
not utilised 40%

Protection status National Low International None413 ha of IBA covered by Regional Park (Skocjanske Jame, 413 ha). 93 ha of IBA covered by Landscape Park (Vremscica, 93 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Karst. Downloaded from http://www.birdlife.org on 30/05/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife