Algae of specific environments in Slovenia

Algae studies were carried out in some specific biotopes of Slovenia: eutrophic lakes (Koseski bajer, Sotelsko jezero), peat bogs (Lovrenska jezera, Sijec), waterfalls (Savica, Krka falls, small waterfall on Pohorje), springs (springs at Medvedje Brdo and Pohorje, hot spring at Terme Catez, mineral spring at Rimski vrelec), brackish waters (Fiesa lake, Dragonja estuary), hypereutrophic biotopes (manure water, constructed wetlands), aerial biotopes (concrete wall, stony wall, lime tree trunk (Tilia platyphyllos), limestone rock, Krska jama cave) and the Dragonja River. Samples were taken seasonally at 26 sampling sites in 1998, 1999, 2000 and 200 l. Similarity in species structure and abundance of algae were determined with the Bray-Curtis coefficient of similarity. Altogether, 537 species and subspecies of algae (of nine classes) were deter­ mined and most of them belonged to Bacillariophyceae. 146 species and sub­ species were identified for the first time in Slovenia; of these 107 belonged to Bacillariophyceae, 28 to Cyanophyceae, six to Chlorophyceae, four to Zygnematophyceae and one to Xanthophyceae. The appearance of almost half of all species and subspecies was limited to a single sampling site. Eight species (Achnanthes minutissima, Cymbella a/finis, Cymbella silesiaca, Gomphonema angustum, Navicula veneta, Navicula sp., Phormidium sp. and Trentepohlia aurea) were present in more than half of all spe­ cific biotopes. V prispevku je predstavljena raziskava alg v nekaterih posebnih biotopih v Sloveniji: eutrofnihjezerih (Koseski bajer, Sotelsko jezero), visokih barjih (Lovrenska jezera, Sijec), slapovih (Savica, slapovi na Krki, slapic na Pohorju), izvirih (izvir na Medvedjem Brdu in Pohorju, termalni izvir v Termah Catez, rnineralni izvir Rimski vrelec), brakicnih vodah Gezero v Fiesi, izliv Dragonje), hiperevtrofnih biotopih (gnojevka, rastlinskih cistil­ nih napravah), kopenskih biotopih (betonski zid, kamniti zid, deblo lipe (Tilia platyphyllos), apnencasta skala, Krska jama) in reki Dragonji. Vzorci so bili odvzeti na 26 vzorcnih mestih v letih 1998, 1999, 2000 in 2001. Z Bray - Curtisovim koeficientom podobnosti je bila ugotovljena podobnost v vrstni strukturi in abundanci alg. Skupno je bilo dolocenih 537 vrst in podvrst alg iz devetih razredov, po stevilu dolocenih vrst so prevladovale Bacillariophyceae. 146 vrst in podvrstje bilo v Sloveniji prvic zabelezenih, od tegajih 107 pripada razredu Bacillariophyceae, 28 razredu Cyanophyceae, sest raz