Rückgang der Tanne (Abies alba Mill.) in Polen

Abstract

Decline of silver fir (Abies alba Mill.) in Poland. On the b.isis of his own observations and of data from the literature, the author gives a review of silver fir diseases, pests and damage by other biotic and abiotic factors in Poland and on conjectural causes of the decline of this tree species.

Growth patterns as indicators of impending tree death in silver fir

“…It is a complex disease, since several environmental factors apparently interact with each other, such as drought, frost, strong temperature decreases, competition, pollution, soil acidification, mineral deficiencies, inappropriate silvicultural treatments, insects, and pathogens (Schütt, 1977;Sierpinski, 1981;Larsen, 1986;Krehan, 1989;Bert, 1993;Certini et al, 2000;Thomas et al, 2002). Larsen (1986) indicated that insufficientgenetic variability and low adaptive capacity of the central and western European silver fir may be a predisposing mortality factor, sensu Manion (1981).…”