Athabasca Basin Athabasca River basin 1 Autotrophic respiration 1 Canada 1 Canadian boreal forest 1 Carbon 1 Carbon cycle 1 Cold climate region 1 Dissolution 1 Dissolved oxygen 1 Dissolved oxygen levels 1 Ecosystem respiration 1 Ecosystems 1 Multiple regression analysis 1 Multivariate approach 1 Oxidation reduction potential 1 Redox reactions 1 Regression analysis 1 Root respiration 1 SWAT 1 Soil moisture 1 Soil respiration 1 Temperature 1 Water-filled pore space 1 air temperature 1 autotrophy 1 boreal forest 1 environmental factor 1 forest soil 1 net ecosystem exchange 1