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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. |
