beech seedlings
Lethal dose-experiment, Eberswalde, GE (Photo © Marco Natkhin)

Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen (Slovakia): 29-30 July 2015

Participants: Eva Pšidová, Lubica Ditmarova (hosts), Claudia Cocozza, Andreas Bolte

The workshop was aimed at analyzing and discussing the outcomes of two simultaneous lethal drought experiments on young beech plants in Germany (Thünen Institute of Forest Ecology, Eberswalde) and Italy (University of Molise, Campobasso). Both experiments were done using seedlings of the same seven populations from different mesic and xeric environments in Europe. The collection of the seeds were organized and conducted by the TG 3 participants. Moreover, the participants discussed drafts of two different manuscripts on (1) the ecophysiology of the drought-stressed beech seedlings and (2) the desiccation and mortality dynamics in the young beech plants. Both papers shall be submitted to a special issue in Frontiers in Plant Science.

A large set of data and parameters on the physiological behavior regarding chlorophyll fluorescence, transpiration and assimilation processes and productivity are available to detect the adaptation capacity of different beech populations to extreme drought. Desiccation and mortality of the different populations will be related to the plant and soil water status (L50SWC: remaining plant-available soil water content at the time of 50% population mortality). Climate parameters of the beech population origins will be used to prove the hypothesis that beech populations from xeric environments exhibit a higher adaptation to extreme drought events.

writers meeting TG3