Articles | Volume 12, issue 22
Biogeosciences, 12, 6823–6836, 2015
Biogeosciences, 12, 6823–6836, 2015

Research article 30 Nov 2015

Research article | 30 Nov 2015

Photomineralization and photomethanification of dissolved organic matter in Saguenay River surface water

Y. Zhang and H. Xie


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (Editor review) (10 Nov 2015) by Gerhard Herndl
AR by Huixiang Xie on behalf of the Authors (10 Nov 2015)  Author's response    Manuscript
ED: Publish as is (15 Nov 2015) by Gerhard Herndl
Short summary
Sunlight-initiated photochemistry plays an important role in carbon and trace gases cycling in natural waters. We for the first time confirm that photochemical degradation of dissolved organic carbon (DOC) can produce methane, which is the second most important greenhouse gas in the atmosphere. Dissolved oxygen greatly affects the rates of DOC photodegradation and methane photoproduction. The implications of methane photoproduction for methane cycling in modern and ancient oceans are discussed.
Final-revised paper