Monitoring weekly δ13C variations along the cambium-xylem continuum in the Canadian eastern boreal forest.

ABSTRACT: Intra-annual variations of carbon stable isotope ratios (δ13C) in different tree compartments could represent valuable indicators of plant carbon source-sink dynamics, at weekly time scale. Despite this significance, the absence of a methodological framework for tracking δ13C values in tree rings persists due to the complexity of tree ring development. To fill this knowledge gap, we developed a method to monitor weekly variability of δ13C in the cambium-xylem continuum of black spruce species [Picea mariana (Mill.) BSP.] during the growing season. We collected and isolated the weekly incremental growth of the cambial region and the developing tree ring from five mature spruce trees over three consecutive growing seasons (2019-21) in Simoncouche and two growing seasons (2020-21) in Bernatch

SUBMITTER: Namvar S 

PROVIDER: S-EPMC11585013 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature