<abstract xmlns="http://www.w3.org/1999/xhtml"><p>In the southern Julian Alps we described two communities whose tree layer is dominated by species from the genus <italic>Sorbus</italic> and noted two successional stages in the overgrowing of abandoned agricultural land (pastures, hay meadows). In the secondary succession on former subalpine pastures above the alp Planina Razor und under the Breginjski Stol ridge, where potential natural vegetation consists of subalpine beech forest, dwarf pine has been overgrown with mountain ash (<italic>Sorbus aucuparia</italic>) whose stands are classified into the new association <italic>Rhododendro hirsuti-Sorbetum aucupariae</italic>. Whitebeam (<italic>Sorbus aria</italic>) has established itself on steep former hay meadows in the belt of altimontane beech forests under Mts. Jalovnik and Krikov Vrh, on gullied slopes on mixed geological bedrock dominated by chert, and these stands are classified into the association <italic>Calamagrostio arundinaceae-Sorbetum ariae</italic>. While occupying only small areas these two pioneer stages, as the sites of some rare or protected species, are nevertheless important biotopes and play a vital role in protection against avalanches.</p></abstract>

In the southern Julian Alps we described two communities whose tree layer is dominated by species from the genus Sorbus and noted two successional stages in the overgrowing of abandoned agricultural land (pastures, hay meadows). In the secondary succession on former subalpine pastures above the alp Planina Razor und under the Breginjski Stol ridge, where potential natural vegetation consists of subalpine beech forest, dwarf pine has been overgrown with mountain ash (Sorbus aucuparia) whose stands are classified into the new association Rhododendro hirsuti-Sorbetum aucupariae. Whitebeam (Sorbus aria) has established itself on steep former hay meadows in the belt of altimontane beech forests under Mts. Jalovnik and Krikov Vrh, on gullied slopes on mixed geological bedrock dominated by chert, and these stands are classified into the association Calamagrostio arundinaceae-Sorbetum ariae. While occupying only small areas these two pioneer stages, as the sites of some rare or protected species, are nevertheless important biotopes and play a vital role in protection against avalanches.

Two new pioneer communities of <italic>Sorbus aucuparia</italic> and <italic>Sorbus aria</italic> in the southern Julian Alps

Institute of Biology, Scientific Research Centre of the Slovenian Academy of Sciences and Arts, Regional unit Tolmin, Brunov drevored 13, SI-5220 Tolmin, and Biotechnical Faculty of the University in Ljubljana, Department of Forestry and Renewable Forest Resources, Večna pot 83, SI-1000 Ljubljana.

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Two new pioneer communities of  and  in the southern Julian Alps

In the southern Julian Alps we described two communities whose tree layer is dominated by species from the genus Sorbus and noted two successional stages in...

Two new pioneer communities of Sorbus aucuparia and Sorbus aria in the southern Julian Alps

Published Online: Feb 22, 2016

Page range: 67 - 91

Received: Apr 28, 2015

Accepted: Oct 18, 2015

DOI: https://doi.org/10.1515/hacq-2016-0009

Keywords
phytosociology, syndynamics, successional stage, Natura 2000, Julian Alps, western Slovenia

© 2016 Igor Dakskobler, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Two new pioneer communities of Sorbus aucuparia and Sorbus aria in the southern Julian Alps

Published Online: Feb 22, 2016

Page range: 67 - 91

Received: Apr 28, 2015

Accepted: Oct 18, 2015

DOI: https://doi.org/10.1515/hacq-2016-0009

Keywordsphytosociology, syndynamics, successional stage, Natura 2000, Julian Alps, western Slovenia

© 2016 Igor Dakskobler, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
phytosociology, syndynamics, successional stage, Natura 2000, Julian Alps, western Slovenia