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Volume 12, issue 22
Biogeosciences, 12, 6669–6685, 2015
https://doi.org/10.5194/bg-12-6669-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Freshwater ecosystems in changing permafrost landscapes

Biogeosciences, 12, 6669–6685, 2015
https://doi.org/10.5194/bg-12-6669-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 24 Nov 2015

Research article | 24 Nov 2015

Controls on dissolved organic matter (DOM) degradation in a headwater stream: the influence of photochemical and hydrological conditions in determining light-limitation or substrate-limitation of photo-degradation

R. M. Cory et al.

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Cited articles

Amado, A. M., Farjalla, V. F., Esteves, F. D. A., Bozelli, R. L., Roland, F., and Enrich-Prast, A.: Complementary pathways of dissolved organic carbon removal pathways in clear-water Amazonian ecosystems: Photochemical degradation and bacterial uptake, FEMS Microbiol. Ecol., 56, 8–17, 2006.
Battin, T. J., Kaplan, L. a., Findlay, S., Hopkinson, C. S., Marti, E., Packman, A. I., Newbold, J. D., and Sabater, F.: Biophysical controls on organic carbon fluxes in fluvial networks, Nat. Geosci., 2, 595–595, 2009.
Boano, F., Harvey, J. W., Marion, A., Packman, A. I., Revelli, R., Ridolfi, L., and Wörman, A.: Hyporheic flow and transport processes:Mechanisms,models, and biogeochemical implications, Rev. Geophys., 52, 603–679, https://doi.org/10.1002/2012RG000417, 2014.
Brooks, M. L., Meyer, J. S., and McKnight, D. M.: Photooxidation of wetland and riverine dissolved organic matter: Altered copper complexation and organic composition, Hydrobiologia, 579, 95–113, 2007.
Caplanne, S. and Laurion, I.: Effect of chromophoric dissolved organic matter on epilimnetic stratification in lakes, Aquat. Sci., 70, 123–133, 2008.
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This study investigates how sunlight, dissolved organic matter (DOM) concentration and composition, and hydrology interact to control DOM degradation in headwater streams. In Imnavait Creek, a shallow, low-relief stream in the Arctic, DOM degradation by sunlight was limited by light under all conditions. Study results were used to synthesize controls on DOM degradation by sunlight for a river reach, expressed as a function of light attenuation and water residence times.
This study investigates how sunlight, dissolved organic matter (DOM) concentration and...
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