• The first paper is undoubtedly one of the most quoted articles from Annals of Forest Science. In this paper, A. Granier describes for the first time a method for measuring the flow of xylem sap in tree trunks, based on a principle of heat diffusion between two sensors. A key article, even if it is in French: Une nouvelle méthode pour la mesure du flux de sève brute dans le tronc des arbres - A. GRANIER
• The second one is one of M Becker’s first publications based on the use of dendrochronology as tool for analysing long term trends in growth and productivity of forest trees: Bilan de santé actuel et rétrospectif du sapin (Abies alba Mill.) dans les Vosges. Etude écologique et dendrochronologique - M. BECKER, F. GEREMIA and R. SCHIPFER
• The third article written by an American researcher presenting here one of the first attempts to produce a synthesis about the vulnerability of xylem in trees to cavitation. This article is emblematic of the transformation of Annals of Forest Science into an international journal, in English and open to forest researchers worldwide: Cavitation in trees and the hydraulic sufficiency of woody stems - M. TYREE