Annual Growth of Salix arctica in the High-Arctic1

Abstract

A study of the dry weights and ages of 57 Salix arctica plants growing in a higharctic region shows that their annual relative growth-rate, which decreases with age, is about one-fifth of the annual relative growth-rate of comparable plants under temperate conditions. Data on the thickness of annual rings indicate that there is a large and progressive increase in annual growth from high-arctic to sub-arctic regions.