Decoupling of carbon dioxide and dissolved organic carbon in boreal headwater streams

Abstract

Streams and rivers emit large quantities of carbon dioxide (CO2) to the atmosphere. The sources of this CO2 are in-stream mineralization of organic carbon (OC) and CO2 input via groundwater inflow, but their relative importance is largely unknown. In this study, we quantified the role of in-stream OC mineralization as a source of CO2 in a number of nested boreal headwater streams. The results showed that mineralization of stream OC contributed 3% of CO2 supersaturation at time scales comparable to the estimated water travel times in the streams (

Keywords

DOC; CO2; mass balance; water-atmosphere exchange; Riparian flow-concentration Integration Model

Published in

Journal of Geophysical Research: Biogeosciences
2016, volume: 121, number: 10, pages: 2630-2651

SLU Authors

• Winterdahl, Mattias

  • Stockholm University

• Wallin, Marcus

  • Uppsala University

• Huseby Karlsen, Reinert

  • Uppsala University

• Laudon, Hjalmar

  • Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
    

• Öquist, Mats

  • Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
    

Associated SLU-program

SLU Future Forests

UKÄ Subject classification

Forest Science

Publication identifier

• DOI: https://doi.org/10.1002/2016JG003420

Permanent link to this page (URI)

https://res.slu.se/id/publ/78126