A Móra Ferenc Múzeum Évkönyve, 1980/81-1.(Szeged, 1984)

Természettudomány - Kiss Tamás: Ammonion-ion Content Examination of some Lichen Taxons by Nessler-reagent

Smith, D. С. (1960b), Studies in the physiology of Lichens. 2. Absorption and utilization of some simple organic nitrogen compounds by Peltigera polydactyla. — Ann. Bot., Lond., N. S. 24,172—185. Smith, D. C. (1961), The physiology of Peltigera polydactyla (Neck.) Hoffm. — The Lichenologist 5, 209—226. Smith, D. C. (1962), The biology of Lichen thalli. — Biol. Rev. 37, 570—637. Solymosi, P. (1979), Fontosabb eredmények a lichenológiában. — A Biol. Akt.Prob. 16, 117—157. Spenling, N. (1971), Flechten und Flechtengesellschaften des Waldviertels. — Herzogia, 2. 161—230. AMMONIUM-ION CONTENT EXAMINATION OF SOME LICHEN TAXONS BY NESSLER—REAGENT by Tamás Kiss Atmospherical sources of nutrtive material are known to be the most important for epiphytic Lichens. Some of the atmospherical gases are poisonous, e. g. SOt, but some are of physiological importance. Ammonium, which is collected in the colonies, belongs to the latter. Ammonium is processed for the whole Lichen by gonidia. The NH

4 storing capacity of four Lichen taxons (Parmelia sulcata, Phaeophyscia orbicularis var. virella, Physcia aipolia and Xanthoria parietina) were examined. The species werw collected from different spots. The conclusion, drawn from the results of the accomplished experiments is, that the NH

4 + content of the colonies varies in species and it can be considered constant, independently of the conditions of their living place. 410