Drivers and variability of CO₂:O₂ saturation along a gradient from boreal to Arctic lakes.

ABSTRACT: Lakes are significant players for the global climate since they sequester terrestrially derived dissolved organic carbon (DOC), and emit greenhouse gases like CO₂ to the atmosphere. However, the differences in environmental drivers of CO₂ concentrations are not well constrained along latitudinal and thus climate gradients. Our aim here is to provide a better understanding of net heterotrophy and gas balance at the catchment scale in a set of boreal, sub-Arctic and high-Arctic lakes. We assessed water chemistry and concentrations of dissolved O₂ and CO₂, as well as the CO₂:O₂ ratio in three groups of lakes separated by steps of approximately 10 degrees latitude in South-Eastern Norway (near 60° N), sub-Arctic lakes in the nor

SUBMITTER: Allesson L 

PROVIDER: S-EPMC9643447 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature