Understanding linkages between river chemistry and biological production in arctic coastal waters requires improved estimates of riverine nutrient export. Here we present the results of a synthesis effort focusing on relationships between watershed slope and seasonal concentrations of river-borne dissolved organic carbon (DOC), dissolved organic nitrogen (DON), and nitrate (NO3 -) around the pan-Arctic. Strong negative relationships exist between watershed slope and concentrations ofDOC andDONin arctic rivers. Spring and summer concentration-slope relationships forDOCandDON are qualitatively similar, although spring concentrations are higher. Relationships for NO3 -are more variable, but a significant positive relationship exists between summer NO3 -concentrations and watershed slopes. These results suggest that watershed slope can serve as a master variable for estimating spring and summerDOCandDONconcentrations, and to a lesser degree NO3 -, from drainage areas where field data are lacking, thus improving our ability to develop pan-arctic estimates of watershed nutrient export.
- dissolved organic matter
- inorganic nitrogen
- watershed slope
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Environmental Science(all)
- Public Health, Environmental and Occupational Health