Fine‐scale species distribution changes in a mixed oak stand over two successive generations

• DOI: 10.1111/nph.14561
• Publication Date: 2017-04-26T13:07:48Z
• Authors: Laura Truffaut; Emilie Chancerel; Alexis Ducousso; Jean Luc Dupouey; Vincent Badeau; François Ehrenmann; Antoine Kremer
• Keywords: Quercus petraea; Quercus robur

Summary Large‐scale tree distribution changes have received considerable attention but underlying demo‐genetic mechanisms are less well documented. We used a diachronic approach to track species shifts in mixed oak stand ( Quercus petraea–Quercus robur ) at fine spatiotemporal scale. Species assignment was made using single nucleotide polymorphism SNP fingerprints employing clustering and parentage analysis. Mating patterns reproductive success were assessed by Plot‐based inventories of soil parameters sapling densities provided ecological demographic information, respectively. Sapling density higher Q. petraea than , correlated with spatial expansion (50% 67% the area). Admixed trees resulting from hybridization backcrossing between two more frequent under canopy. suspect that species’ differential responses ongoing environmental interspecific competition predominant factors accounting for recruitment while human interference, reproduction (and backcrossings) probably limited importance. anticipate petraea–Q. stands, current change, these processes will be enhanced, least western part species.