Species composition of aerophytic algae from selected localities in Slovenia indicates dynamic changes in a community | Vrstna sestava aerofitskih alg na izbranih lokacijah v Sloveniji nakazuje dinamične spremembe v združbi

anglais. In the years 2005 and 2006, algal samples were collected seasonally at five different aerophytic sampling sites. We compared samples from decayed wood stump, limestone rocks, concrete and soil. The samples were collected from a stump of Picea abies on the Jelovica plateau, damp rocks at Šica spring on Radensko polje, karst cave Huda luknja entrance and at the abandoned railway tunnel near Huda luknja cave. Altogether, 17 algal samples were collected. 94 algal taxa from 38 genera and four classes were determined. Most of them belonged to diatoms, followed by cianobacteria, Chlorophyceae and Xanthophyceae. Bacillariophyceae were the predominant group of algae on wet rocks at Šica spring, karst cave Huda luknja entrance and on the abandoned railway tunnel, while the Chloprophyceae were predominant on a stump of Picea abies on the Jelovica plateau. At other localities, Bacillariophyceae prevailed. Altogether, 20 taxa were identified for the first time in Slovenia. The genera Podohedra and Poloidion are new records for Slovenia. The algal community was also influenced by the type of substrate colonized by aerophytic algae.

slovène. V različnih letnih časih v letih 2005 in 2006 smo vzorčevali alge na petih različnih aerofitskih lokacijah. Za medsebojno primerjavo smo vzorčna mesta izbrali na trhlem lesu, apnenčastih skalah, betonu in prsti. Vzorčili smo na smrekovem štoru (Picea abies) na Jelovici, vlažnih skalah na izviru Šice na Radenskem polju, na vhodu v kraško jamo Huda luknja in v opuščenem železniškem predoru pri jami Huda luknja. Skupno smo nabrali 17 vzorcev alg. Identificirali smo 94 taksonov, ki pripadajo 38 rodovom in štirim razredom alg. Po številu identificiranih taksonov so prevladovale kremenaste alge, sledile so cianobakterije, Chlorophyceae in Xanthophyceae. Razen na smrekovem štoru na Jelovici, kjer so prevladovale Chlorophyceae, so na drugih lokacijah prevladovale Bacillariophyceae. Skupno smo identificirali 20 taksonov, ki doslej še niso bili zabeleženi na območju Slovenije. Rodova Podohedra in Poloidion sta v Sloveniji ugotovljena prvič. Na združbo je vplival tudi tip substrata, ki so ga kolonizirale aerofitske alge.