Photodegraded dissolved organic matter from peak freshet river discharge as a substrate for bacterial production in a lake-rich great Arctic delta

• Published in: Arctic Science
• Main Authors: Jolie A.L. Gareis, Lance F.W. Lesack
• Format: Article in Journal/Newspaper
• Language: English; French
• Published: Canadian Science Publishing 2018
• Subjects: circumpolar river delta; photodegradation; dissolved organic matter; bacterial metabolism; mackenzie river; Environmental sciences; GE1-350; Environmental engineering; TA170-171; Arctic; Mackenzie River; Mackenzie Delta; Mackenzie river
• Online Access: https://doi.org/10.1139/as-2017-0055; https://doaj.org/article/6ac37c10a9de4c799b7ed7c2738f7734

Lake-rich Arctic river deltas are recharged with terrigenous dissolved organic matter (DOM) during the yearly peak water period corresponding with the solstice (24 h day−1 solar irradiance). Bacteria-free DOM collected during peak Mackenzie River discharge was exposed to sunlight for up to 14 days i...