Drought elicits contrasting responses on the autumn dynamics of wood formation in late successional deciduous tree species
| Autor: | Sebastien Leys, Jožica Gričar, Nicolas Delpierre, Cyrille B. K. Rathgeber, Omar Flores, Inge Dox, Patrick Fonti, Matteo Campioli, Peter Prislan, Bertold Mariën |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Physiology Plant Science 01 natural sciences Trees 03 medical and health sciences Xylem Forest ecology Temperate climate Cambium Beech Biology Ecosystem biology Phenology 15. Life on land biology.organism_classification Wood Droughts 030104 developmental biology Deciduous Agronomy Late season Seasons 010606 plant biology & botany |
| Zdroj: | Tree physiology Tree Physiology |
| ISSN: | 0829-318X |
| Popis: | Research on wood phenology has mainly focused on reactivation of the cambium in spring. In this study we investigated if summer drought advances cessation of wood formation and if it has any influence on wood structure in late successional forest trees of the temperate zone. The end of xylogenesis was monitored between August and November in stands of European beech and pedunculate oak in Belgium for two consecutive years, 2017 and 2018, with the latter year having experienced an exceptional summer drought. Wood formation in oak was affected by the drought, with oak trees ceasing cambial activity and wood maturation about 3 weeks earlier in 2018 compared with 2017. Beech ceased wood formation before oak, but its wood phenology did not differ between years. Furthermore, between the 2 years, no significant difference was found in ring width, percentage of mature fibers in the late season, vessel size and density. In 2018, beech did show thinner fiber walls, whereas oak showed thicker walls. In this paper, we showed that summer drought can have an important impact on late season wood phenology xylem development. This will help to better understand forest ecosystems and improve forest models. |
| Databáze: | OpenAIRE |
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