Cyanobacteria and algae on stone of cultural heritage in Bratislava

Rok, strany: 2005, 11 - 16

This study contains data about the epilithic cyanobacteria and algae as agents of biodeterioration growing on stone substrata in several cultural monuments, i. e. on old Jewish cemetery in Bratislava known as the Chatam Sófer Crypt, St. Martin´s Cathedral, and historic cemetery Kozia brána. Among terrestrial microorganisms, cyanobacteria and chlorophytes are the main colonizers. The dominant species within these communities are mainly filamentous forms of cyanobacteria (Nostoc microscopicum, Leptolyngbya fragilis), chlorophytes (Klebsormidium flaccidum, K. crenulatum), chrysophytes (Heterococcus brevicellularis, Navicula atomus) and also unicellular cyanobacteria (Chroococcidiopsis umbratilis) and chlorophytes (Muriella terrestris, Desmococcus olivaceus). Samples were taken from different substrata such as sandstone, limestone, calcarenite, calcrudite, marble and concrete. In total, 61 subaerial species were identified (13 cyanobacteria, 1 rhodophyte, 13 chrysophytes and 34 chlorophytes). Some floristic and ecological aspects of cyanophytes and algae observed in this study from stone surfaces are discussed. 35 taxa are first records for the territory of Slovakia