Growth partitioning within beech trees (Fagus sylvatica L.) varies in response to summer heat waves and related droughts
| Autor: | François Lebourgeois, Nicolas Latte, Hugues Claessens |
|---|---|
| Přispěvatelé: | Université de Liège, Laboratoire d'Etudes des Ressources Forêt-Bois (LERFoB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, AgroParisTech-Institut National de la Recherche Agronomique (INRA) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Ecophysiology Extreme climate 010504 meteorology & atmospheric sciences Physiology Summer heat croissance végétale Masting trade-off [SDV]Life Sciences [q-bio] Plant Science drought fagus sylvatica Atmospheric sciences 01 natural sciences Growth allocation Fagus sylvatica european beech cerne d'accroissement accroissement du tronc température Reserve depletion radial increment Tree-ring analysis arbre forestier feuillu Beech belgique 0105 earth and related environmental sciences sécheresse Ecology biology Crown (botany) facteur climatique Forestry plant growth 15. Life on land accroissement du diamètre biology.organism_classification Climate sensitivity Radial growth 13. Climate action Environmental science Stem analysis 010606 plant biology & botany |
| Zdroj: | Trees-Structure and Function Trees-Structure and Function, Springer Verlag, 2016, 30 (1), pp.189-201. ⟨10.1007/s00468-015-1288-y⟩ |
| ISSN: | 0931-1890 1432-2285 |
| DOI: | 10.1007/s00468-015-1288-y⟩ |
| Popis: | Beech growth variability and climate sensitivity are much higher in the crown top than in the bole. The most notable bole–crown discrepancies occurred in response to extreme climate conditions. To characterize growth partitioning within the tree and its responses to climate, we studied eight dominant beech trees (Fagus sylvatica L.) of a pure, even-aged 98-year-old stand in Belgium. We sampled ten 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. |
| Databáze: | OpenAIRE |
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