Die epiphytischen Flechten in drei verschiedenen Laubwaldgesellschaften im Nationalpark Harz

Abstract

Ungethüm, K., Kison, H.-U., Stordeur, R.: The epiphytic lichen flora in three different deciduousforests in the Harz National Park. - Hercynia N. F. 44 (2011): 191 – 210.During the course of lichen mapping in the Harz National Park in April and May 2009, 15 plots of 400 m2in three different deciduous forest communities have been examined, and resulted in 43 documentedepiphytic lichen taxa.25 taxa have been found in the Luzulo-Fagetum, and four in the Asperulo-Fagetum. The Tilio-Acerionis characterised by the highest lichen diversity, with 31 documented taxa.Based on the frequency of occurrence, particular lichen species are proposed as characteristic speciesof the forest communities concerned, in the two beech communities above all Porina aenea and Coenogoniumpineti, and in the Luzulo-Fagetum in addition Mycoblastus fucatus. Hypogymnia physodesand Chaenotheca ferruginea are confirmed as characteristic species for the Tilio-Acerion and in additionParmelia saxatilis is proposed. Furthermore, it is proposed to delete the toxitolerant species Lecanoraconizaeoides from the list of characteristic species of the three forest communities concerned.13 species of the 43 species in total belong to the Red Lists of Sachsen-Anhalt, Niedersachsen and/orGermany in general.47 % of the lichen species, i.e. about half of the species, inhabit dead wood. Hence, dead wood has to beconsidered as an important structural element in nearly natural forests as habitat for epiphytic lichens.Key words: Epiphytic lichens, deciduous forests, characteristic species, ecological requirements, deadwood.