The timing of leaf flush in European beech (Fagus sylvatica L.) saplings

0359196 - ÚVGZ 2012 RIV ES eng C - Conference Paper (international conference)
Robson, T.M. - Ricardo, A. - Bozic, G. - Clark, J. - Forstreuter, M. - Gömöry, D. - Liesebach, M. - Mertens, P. - Raszovits, E. - Zitová, Martina - Wühlisch, G.v.
The timing of leaf flush in European beech (Fagus sylvatica L.) saplings.
Genetic Resources of European Beech (Fagus sylvatica L.) for Sustainable Forestry. Carretera de La Coruña: Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, 2011, s. 61-79. Monografías inia, Serie forestal, 22. ISBN 978-84-7498-532-0. ISSN 1575-6106.
[Proceedings of the COST E52 Final Meeting. Burgos (ES), 04.05.2010-06.05.2010]
R&D Projects: GA MŠMT OC08022
Institutional research plan: CEZ:AV0Z60870520
Keywords : spring phenology * bud-burst * range shift * provenance trials * temperature sum model * clines * glacial refugia
Subject RIV: GK - Forestry

Data obtained through monitoring of bud burst at multiple beech provenance-trials were compared with specific site and weather data to reveal geographical clines in beech phenology. By comparing data from 20 annual census of phenology performed across 13 sites throughout Europe, we showed that accumulated temperature sum > 5°C modelled the timing and duration of flushing more consistently than other temperature sum models > 0°C or > 8°C, or simply Julian Day. Inconsistency in the number of degree hours required for flushing among sites, reinforced the need for testing of more complex mechanistic models that include photoperiod, chilling period, and summer drought in addition to temperature sum. South-North, East-West, and low-high elevational clines were confirmed from the analysis. These findings highlight the location of some potentially valuable late-flushing populations that also tolerate warm dry temperatures.
Permanent Link: http://hdl.handle.net/11104/0197031