KAZALCI OKOLJA

Key message
Neutral

Population trends of selected bird species show that the state of the environment in the cultural landscape is deteriorating, especially in some parts such as Prekmurje and Ljubljansko barje. Populations of selected forest bird species are in moderate decline, while wetland conditions have not changed in the last few years. Bird populations that overwinter on Slovenian rivers and other water bodies are stable or growing. Minor fluctuations are part of natural population changes.

The movement of bird populations nesting in the cultural landscape is shown by three selected species: white stork, corncrake, and great crested grebe. The population of white stork (Ciconia ciconia) in Slovenia is moderately increasing. Nesting pairs inhabit new mesoregions and their numbers are increasing in areas where the species has not historically been present. While population trends in almost all mesoregions are positive or stable, the trend at the Mura level (Prekmurje) is typically negative. Corncrake (Crex crex) population on the Ljubljana Marshes continues (Ljubljansko barje) to decline.


Charts

Figure NB01-1: White Stork (Ciconia ciconia) breeding population size
Sources:

See methology, source nr.: 20, 26, 31, 32, 33, 34, 35, 36, 37, 38, 39

Show data
white stork (Ciconia ciconia[number of pairs]
1999 201
2000 187
2001 198
2002 191
2003 191
2004 239
2005 192
2006 201
2007 217
2008 237
2009 205
2010 204
2011 219
2012 240
2013 250
2014 267
2015 251
2016 239
2017 237
2018 223
2019 245
2020 259
Figure NB01-2: Number calling Corncrake (Crex crex) males at the Cerknica Lake (Cerkniško jezero) and the Ljubljana Marshes (Ljubljansko barje)
Sources:

See methology, source nr.: 4, 39, 46, 47, 48

Show data
Cerknica Lake[number] Ljubljana Marshes[number] Slovenia[number]
1992 70 236 0
1993 101 0
1994 45 0
1995 83 0
1996 68 0
1997 42 0
1998 45 0
1999 54 238 0
2000 54 0
2001 65 0
2002 76 160 0
2003 74 137 0
2004 59 104 400
2005 0
2006 22 171 0
2007 54 142 0
2008 35 106 0
2009 122 0
2010 54 118 277
2011 82 131 0
2012 70 119 0
2013 36 97 0
2014 50 114 0
2015 61 126 350
2016 58 88 272
2017 62 61 205
2018 113 46 270
2019 98 80 268
2020 103 98 266
Figure NB01-3: Winter population size of selected waterbirds: Little grebe (Tachybaptus ruficollis), Cormorant (Phalacrocorax carbo), Great White Egret (Ardea alba), Mallard (Anas platyrhynchos), Tufted duck (Aythya fuligula), Goldeneye (Bucephala clangula) and Goosander (Mergus merganser)
Sources:

See methology, source nr.:5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 50

Show data
    1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
Cerkniško jezero number calling males 70 101 45 83 68 42 45 54 54 65 76 74 59 47 22 54 35   54 82 70 36 50 61 58 62 113 98 103
Ljubljansko barje number calling males 236             238     160 137 104 134 171 142 106 122 118 131 119 97 114 126 88 61 46 80 98
Figure NB01-4: Common Tern (Sterna hirundo) breeding population size
Sources:

See methology, source nr.: 22, 27, 39 

Show data
  1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
Inland 93 136 64 93 57     53           144 91 109 79 99 94 108 129 115 77 90 102 108 167 176 258 191
Coast 22 41 43 48 50 60 53 50 48 44 51 48 41 62 53 49 49 75 53 65 66 83 90 110 111 155 137 197 184 192
Figure NB01-5: Middle-spotted Woodpecker (Dendrocopus medius) breeding population size at the Mura and the Krakovski gozd-Šentjernejsko polje sites
Sources:

See methology, source nr.: 39

Show data
IBA/SPA 2005 2007 2009 2010 2011 2013 2014 2015 2016 2017 2018 2019 2020
Mura 34 30 24 33 42 32 28 27 28 23 32 33 37
Krakovski gozd - Šentjernejsko polje 32 64 34 42 41 34 31 29 26 23 31 25 41
Figure NB01-6: Number of calling Scops Owl (Otus scops) males at the Ljubljana Marshes, Kras and Goričko
Sources:

See methology, source nr.: 28, 29, 38, 39

Show data
Goričko[number] Ljubljansko barje[number] Kras[number]
1997 210
1998 59
1999 39
2000 50
2001 37
2002 42
2003 45
2004 157 33
2006 212
2007 100
2008 46 166
2009 122
2010 57 120
2011 64
2012 55 43 163
2013 55
2014 51 89
2015 69
2016 58 85
2017 69 0
2018 47 62
2019 75
2020 105 104

Methodology

Date of data source summarization