Risto Jalkanen

TL;DR: In this paper, the periods of cambial activity and cell differentiation were assessed on a weekly time-scale on histological sections of Cambium and wood tissue collected over 2 to 5 years per site from 1998 to 2005 from the stems of seven conifer species.

TL;DR: In this paper, the authors proposed a correction procedure that attempts to calculate the δ13C values that would have been obtained under pre-industrial conditions using nonlinear regression, but the magnitude of the adjustment made is restricted by two logical constraints based on the physiological response of trees.

TL;DR: In this article, the authors proposed a correction procedure that attempts to calculate the δ13C values that would have been obtained under pre-industrial conditions using nonlinear regression, but the magnitude of the adjustment made is restricted by two logical constraints based on the physiological response of trees.

TL;DR: In this paper, stable carbon isotope ratios from the latewood cellulose of 12 trees from two sites in northern Finland are used to construct an isotope chronology covering AD 1640 to 2002.

TL;DR: It is demonstrated that the combined effects of increasing CO2 and climate change leading to soil drying have resulted in an accelerated increase in iWUE, which will help to reduce uncertainties in the land surface schemes of global climate models, where vegetation-climate feedbacks are currently still poorly constrained by observational data.