Article (Scientific journals)
Growth partitioning within beech trees (Fagus sylvatica L.) varies in response to summer heat waves and related droughts
Latte, Nicolas; Lebourgeois, François; Claessens, Hugues
2016In Trees: Structure and Function, 30 (1), p. 189-201
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Keywords :
Tree-ring analysis; Growth allocation; Climate sensitivity; Stem analysis; Reserve depletion; Masting trade-off
Abstract :
[en] To characterize growth partitioning within the tree and its responses to climate, we studied 8 dominant beech trees (Fagus sylvatica L.) of a pure, even-aged 98-year-old stand in Belgium. We sampled 10 disks along the stem from breast height to treetop and examined the inter-annual patterns of, and discrepancies between, ring-area and volume increments by performing detailed stem analysis and dendroecological investigations. Although the common inter-annual variation among all increment series was high, we observed increasing growth variability and climate sensitivity with height, leading to notable bole-crown discrepancies. Both the common inter-annual variation and bole-crown discrepancies were mainly driven by summer heat waves and related droughts of the previous year, and spring droughts of the current year. Despite these discrepancies, the radial growth at breast height can be considered a good estimate of the tree volume increment but not for the purpose of focusing on climatic effects of isolated years. Extreme climatic conditions increase the risk of inaccurate estimations. The results of the present study are discussed in relation to tree ecophysiology hypotheses.
Research center :
Forest Resources Management, University of Liège, Gembloux Agro-Bio Tech
Disciplines :
Environmental sciences & ecology
Author, co-author :
Latte, Nicolas ;  Université de Liège > Ingénierie des biosystèmes (Biose) > Gestion des ressources forestières et des milieux naturels
Lebourgeois, François
Claessens, Hugues ;  Université de Liège > Ingénierie des biosystèmes (Biose) > Gestion des ressources forestières et des milieux naturels
Language :
English
Title :
Growth partitioning within beech trees (Fagus sylvatica L.) varies in response to summer heat waves and related droughts
Publication date :
February 2016
Journal title :
Trees: Structure and Function
ISSN :
0931-1890
eISSN :
1432-2285
Publisher :
Springer
Volume :
30
Issue :
1
Pages :
189-201
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Accord cadre de recherche et vulgarisation forestières
Funders :
SPW DNF - Service Public de Wallonie. Département de la Nature et des Forêts [BE]
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