Killmann D. & Boecker M.
(1998):
Zur epiphytischen Flechtenflora und -vegetation des Siebengebirges und ihren Veränderungen seit 1959 -
Decheniana,
151: 133–172
The lichen cover on trees as well as on dead respectively processed wood in the Nature Reserve "Siebengebirge“ near Bonn has been investigated from March to November 1997.
79 species have been identified. Out of the 59 species found by Klement (1959) 18 could not be found recently; 41 are confirmed. 38 taxa are recently found, among them several rare species. Apart from a few species called frequent by Klement but not found at present, more than a dozen species which at that time have been classified …
Read more...
