Climate warming differently affects Larix decidua ring formation at each end of a French Alps elevational gradient
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RESEARCH PAPER
Climate warming differently affects Larix decidua ring formation at each end of a French Alps elevational gradient Philippe Rozenberg 1 & Thibaud Chauvin 1 & Margarita Escobar-Sandoval 1,2 & Frédéric Huard 3 & Vladimir Shishov 4 & Jean-Paul Charpentier 1 & Anne-Sophie Sergent 5 & J. Jesus Vargas-Hernandez 6 & Alejandro Martinez-Meier 5 & Luc Pâques 1 Received: 12 December 2019 / Accepted: 28 April 2020 # INRAE and Springer-Verlag France SAS, part of Springer Nature 2020
Abstract & Key message The ongoing global warming tends to reduce Larix decidua radial growth and ring wood density at the bottom of an elevational gradient in the French Alps, while it has a less marked effect at the top. & Context The ongoing climate warming affects most tree species across their biogeographic distribution range. The bottom and the top of an elevational gradient are appropriate environments to observe the effect of climate warming in contrasted temperature conditions. & Aims To retrospectively study the effect of the ongoing climate warming on Larix decidua trees located in warm and cold conditions, i.e., at the bottom (1200 m) and the top (2300 m) of an elevational gradient, respectively. & Methods Dendroecological analysis of two groups of Larix decidua trees located at very low (1200 m) and very high (2300 m) elevations. Construction of climatic response curves for annual ring variables. Decomposition of the variance of the response models into their high and low frequency components. & Results At Briançon, in the French Alps, the increase of the daily maximum temperature during the last 50 years is already almost 3 °C for the March–October period. The results reveal contrasted behaviors at both ends of the investigated elevational gradient. Basal area increment, ring width, and their earlywood and latewood components increase or level off at the top of the gradient, while they all strongly decrease at the bottom. At the bottom, the low frequency warming effect explains the recent ring width decrease, with no influence of the high frequency temperature variation. At the top, both the low frequency warming effect Handling Editor: Patrick Fonti This article is part of the topical collection on Wood formation and tree adaptation to climate * Philippe Rozenberg [email protected]
Alejandro Martinez-Meier [email protected] Luc Pâques [email protected]
Thibaud Chauvin [email protected] Margarita Escobar-Sandoval [email protected]
1
INRAE, UMR 0588 BIOFORA, 2163 Avenue de la Pomme de Pin, CS 40001, 45075 Ardon Cedex 2, Orléans, France
Frédéric Huard [email protected]
2
Facultad de Ingeniería, Universidad de Ciencias y Artes de Chiapas, Unicach Villacorzo, Villacorzo, Chiapas, México
3
INRAE, US 1116 AgroClim, 228 route de l’Aérodrome CS 40509, 84914 Avignon Cedex 9, France
4
Math Methods and IT Department, Institute of Economics and Trade, Siberian Federal University, L. Prushinskoi st., 2, Krasnoyarsk 660075, Russia
Anne-Sophie Sergent ansosergent@gmai
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