Stream metabolism controls diel patterns and evasion of CO₂ in Arctic streams.

ABSTRACT: Streams play an important role in the global carbon (C) cycle, accounting for a large portion of CO₂ evaded from inland waters despite their small areal coverage. However, the relative importance of different terrestrial and aquatic processes driving CO₂ production and evasion from streams remains poorly understood. In this study, we measured O₂ and CO₂ continuously in streams draining tundra-dominated catchments in northern Sweden, during the summers of 2015 and 2016. From this, we estimated daily metabolic rates and CO₂ evasion simultaneously and thus provide insight into the role of stream metabolism as a driver of C dynamics in Arctic streams. Our results show that aquatic biological processes regulate CO₂ concentrations

SUBMITTER: Rocher-Ros G 

PROVIDER: S-EPMC7078971 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature