SOME TERRESTRIAL ALGAE ON THE SURFACE OF BUILDINGS IN DEBRECEN, HUNGARY.

A total of 19 terrestrial algae were identified from different surfaces of the courtyard of the Hungarian Research Network (HUN-REN) Institute for Nuclear Research in Debrecen. Organisms were identified at the lowest possible taxonomic level. Various species of Cyanobacteria, chlorophytes, charophytes, and diatoms were characteristic components of the studied terrestrial community. Green algae (Klebsormidium sp., Trebouxia sp., and Apatococcus sp.) represent the dominant element in almost all samples mainly on the surfaces of green patches on pavements. Some rare Cyanobacteria species, Hassallia byssoidea, Gloeocapsopsis chroococcoides, Gloeocapsopsis pleurocapsoides, and Gloeocapsa novacekii were found on the old artificial surfaces. A member of the Hungarian Red List, Cylindrocystis brebissonii was also found under an old transformer. [ABSTRACT FROM AUTHOR]