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Master Thesis

Dendroécologie du pin à crochets (Pinus uncinata Mill. Ex. Mirb.) : étude d’un bio indicateur des variabilités climatiques dans le massif du Vercors

Abstract : Through the CERNES project, a dendroecology study is carried on the mountain pine forest in the Vercors massif, in the limit of his natural range. Three hundred and forty mountain pines (Pinus uncinata Mill. Ex. Mirb.) has been sample across a latitudinal line to study the relation between growth trees and climate. All the procedure of sample and data processing has been made to bring out the climatic signal and to reduce influence of other factors in 12 dendrochronology series. Results show that mountain pine is a good bio indicator of climate variability on the Vercors Mountains, in a temporal and spatial scale. Correlation functions indicate that ring growth is principally affected by precipitations of June and July on n year. Summer climatic conditions of the n-1 year influence their growth. This link is confirmed by Pointer years: years where the mountain pine forest is suffering are principally years where summers of n year and n-1 year are arid. Differences between responses of dendrochronology series show the existence of climatic variability between north and south of the Vercors Mountains. This fact is mainly perceptible in autumn and spring. For the 20th century scale, mobiles response functions demonstrate the link between climatic change and mains growth factors evolution. During this period, the ring growth is principally influenced by precipitations. After 1980, temperatures have more influence.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-01112120
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  • HAL Id : dumas-01112120, version 1

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Sarah Labessoulhe. Dendroécologie du pin à crochets (Pinus uncinata Mill. Ex. Mirb.) : étude d’un bio indicateur des variabilités climatiques dans le massif du Vercors. Biodiversité et Ecologie. 2014. ⟨dumas-01112120⟩

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