Campeau, Audrey
- Université du Quebec a Montreal (UQAM)
- Uppsala universitet
Sammanfattning
Boreal rivers and streams are known as hot spots of CO2 emissions, yet their contribution to CH4 emissions has traditionally been assumed to be negligible, due to the spatially fragmented data and lack of regional studies addressing both gases simultaneously. Here we explore the regional patterns in river CO2 and CH4 concentrations (pCO(2) and pCH(4)), gas exchange coefficient (k), and the resulting emissions in a lowland boreal region of Northern Quebec. Rivers and streams were systematically supersaturated in both gases, with both pCO(2) and pCH(4) declining along the river continuum. The k was on average low and increased with stream order, consistent with the hydrology of this flat landscape. The smallest streams (order 1), which represent
Nyckelord
methane (CH4); carbon dioxide (CO2); rivers; stream; fluvial networks; greenhouse gases
Publicerad i
Global Biogeochemical Cycles
2014, volym: 28, nummer: 1, sidor: 57-69
SLU författare
UKÄ forskningsämne
Geokemi
Publikationens identifierare
- DOI: https://doi.org/10.1002/2013gb004685
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/106004