Dr La Marche examines a core which he has just taken from a tree using an increment borer

Abstract

Tree rings hold clues to future climate changes. Future changes in the Australian climate may be anticipated using data from research into the annual growth rings of trees undertaken at the Australian National University by Visiting Fellow at the Centre for Resource and Environmental Studies (CRES), Dr Valmore La Marche, and several other ANU scientists. Dr La Marche, a Professor of Dendochronology at the Laboratory of Tree-Ring Research at the University of Arizona, USA, studied the physical and chemical properties of the annual growth rings of trees over a twelve month period, 1975-1976.