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- W2897955173 abstract "La régénération forestière est un processus clé de persistance des forêts, particulièrement en marge chaude d’aire de répartition. L’influence du contexte thermique (tempéré ou chaud), de la disponibilité en eau du sol et des interactions chimiques par allélopathie de différentes espèces ont été testées sur la germination de Fagus sylvatica en conditions climatiques contrôlées. Le taux de germination de faînes de Fagus vernalisées est amélioré par des températures relativement chaudes (20 °C), mais bloqué de manière réversible sous contrainte thermique (27 °C). Le taux de croissance relatif des plantules de Fagus est plus important en conditions tempérées que chaudes. Les extraits foliaires de Hedera helix montrent d’importants impacts allélopathiques sur la régénération de Fagus, surtout en conditions tempérées. Nos résultats suggèrent une limitation de régénération de Fagus en marge chaude de son aire de répartition, et une modulation des succès de régénération selon le type de voisinage végétal. Recruitment is a key process for forest sustainability, especially in warm margin of distribution area. The influence of climate (temperate or warm), of soil water availability, and of allelopathic interactions from different forest species have been tested on the germination of Fagus sylvatica in controlled climatic conditions. Germination rates of non-dormant Fagus seeds were improved by relatively warm temperatures (20 °C), but reversibly stopped under heat constraint (27 °C). The relative growth rate of Fagus seedlings was better under temperate climatic conditions. Foliar extracts of Hedera helix showed the highest allelopathic effect on Fagus recruitment, especially in temperate conditions. Our results suggest a limitation of Fagus recruitment in warm margin of its distribution area, and a modulation of recruitment success according to the identity of plant neighbourhood." @default.
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- W2897955173 date "2018-11-01" @default.
- W2897955173 modified "2023-09-25" @default.
- W2897955173 title "Germination et croissance des plantules de hêtre (Fagus sylvatica) sous contraintes climatiques et allélopathiques" @default.
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- W2897955173 doi "https://doi.org/10.1016/j.crvi.2018.09.003" @default.
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