Wspólnotowy Serwis Informacyjny Badan i Rozwoju - CORDIS

Parameters on genetic diversity of Fagus sylvatica, and analysis on the impacts of forest management

An inventory of the genetic diversity in European beech (Fagus sylvatica L.) populations was conducted using four highly polymorphic microsatellite and ten isozyme markers. In total data of 1058 trees were obtained, originating from 10 stands, which were stored in a database. These data allowed us to examine the impact of forest management on genetic diversity and mating in these beech stands. For this we performed a pair-wise comparison of the stands which differ in management intensity. As reference natural stands under low management intensity were chosen. Different parameters of genetic diversity, mating system and for estimating genetic differentiation were obtained such as allelic richness (A), effective number of alleles (Ae), number of rare alleles (Arare), observed (Ho) and expected heterozygosity (He), panmictic index (Fis) and Fst. From the results of the genetic inventory we were able to draw conclusions about the effect of management on genetic diversity. Our results indicated that the shelter wood system is adequate to maintain the genetic diversity in beech. It is likely that this type of management has no or minimum impact on the diversity, at least for the genetic markers used, in beech because the management mimics natural regeneration processes. Additionally, the genetic data were useful for describing the geographical genetic structure of this European species.

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