Protection of genetic variability in polluted stands: a case study with silver fir (Abies alba Mill.)
1995
Ziegenhagen, B. | Scholz, F. (Bundesforschungsanstalt fuer Forst- und Holzwirtschaft, Grosshansdorf (Germany). Inst. fuer Forstgenetik) | Llamaz Gomez, L. | Bergmann, F. | Braun, H.
Stability of forest ecosystems is a common goal of forest management and nature protection. Stability is given when the populations of the involved forest tree species are persistent. Persistence of a population results from its current state of adaptedness and from its adaptive potential, both determined by the genetic structure and regulated by the genetic system. The adaptive potential of long-lived forest tree populations is dependent on the extent of their genetic variability. The management of populations under threat, e.g. by air pollution has to integrate strategies for the protection or for the increase of their genetic variability. A case study on severely threatened silver fir (Abies alba Mill.) in the Ore mountains demonstrates the steps which are necessary for the genetic management of the residual populations. Within a joint project, a comprehensive investigation on abundance and vitality as well as on the genetic constitution of residual silver fir provided basic results for decision-making in forest management and nature protection. The results of the genetic investigations are the basis for in situ and ex situ conservations strategies
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