Lignicolous fungi on common alder (Alnus glutinosa [L.] Gaertn.) - whichof the species of wood-decay fungi are crucial? [German]

摘要

From 1997 to 2000 mycological assessments and phytopathological investigations were conducted in five common alder stands of different ages in the national park "Vorpommersche Boddenlandschaft" (Western Pomerania, north-east Germany). The aim of the project Nas to extend the knowledge of the species spectrum of lignicolous fungi occurring on common alder, and to clarify which of the species are important wood parasites and wood rotting fungi. Mycological surveys resulted in the identification of 40 different fungal species (34 basidio and G ascomycetes); another 4 basidiomycetes had been verified in the phytopathological studies. Furthermore, hyphomycetes of 9 different genera partly occurring in great numbers and great variety - were ascertained. While the majority of the determined asco- and basidiomycetes are white-rot fungi, the deuteromycetes (fungi imperfecti) mainly cause soft rot. As a main result of the mycological and phytopathological investigations the following species can be regarded as important agents of the frequently occurring seem, root and stump rots of common alder, respectively: Inonotus radiatis, Pholiota aurivella, Armillaria mellea s. l. and Inonotus obliquus.