Intra and interspecific gene flows in oaks as mechanisms promoting genetic diversity and adaptive potential. OAKFLOW. Final Report (2001-2005)

Gene dispersion processes are key mechanisms that shape the genetic structure and diversity of forest stands. Gene dispersal occurs by means of both natural migration of pollen and seed as well as via the artificial transfer of seeds and plants. These processes affect the genetic structure of forest stands and thereby influence their ability to adapt to future changes in the environment. Within the OAKFLOW project natural and artificial gene flow, including interspecific geneflow, was monitored in white oaks (mainly Q. petraea and Q.robur) in different purposely installed study plots across Europe. Three main objectives were set to the project: - To trace and quantify gene flow and hybridisation in terms of distances and rates - To evaluate genetic and ecological consequences of gene flow and hybridisation on the adaptation of oak stands - To evaluate impacts of gene flow on management rules and silvicultural regimes of oak stands