Articles | Volume 18, issue 11
Research article
07 Jun 2021
Research article |  | 07 Jun 2021

Reproducible determination of dissolved organic matter photosensitivity

Alec W. Armstrong, Leanne Powers, and Michael Gonsior

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Cited articles

Amado, A. M., Cotner, J. B., Cory, R. M., Edhlund, B. L., and McNeill, K.: Disentangling the Interactions Between Photochemical and Bacterial Degradation of Dissolved Organic Matter: Amino Acids Play a Central Role, Microb. Ecol., 69, 554–566,, 2015. 
Anderson, T. R., Rowe, E. C., Polimene, L., Tipping, E., Evans, C. D., Barry, C. D. G., Hansell, D. A., Kaiser, K., Kitidis, V., Lapworth, D. J., Mayor, D. J., Monteith, D. T., Pickard, A. E., Sanders, R. J., Spears, B. M., Torres, R., Tye, A. M., Wade, A. J., and Waska, H.: Unified concepts for understanding and modelling turnover of dissolved organic matter from freshwaters to the ocean: the UniDOM model, Biogeochemistry, 146, 105–123,, 2019. 
Anesio, A. M. and Granéli, W.: Increased photoreactivity of DOC by acidification: Implications for the carbon cycle in humic lakes, Limnol. Oceanogr., 48, 735–744,, 2003. 
Armstrong, A. W.: Reproducible determination of dissolved organic matter photosensitivity: data and code [Dataset],, 2020. 
Arrigo, K. R. and Brown, C. W.: Impact of chromophoric dissolved organic matter on UV inhibition of primary productivity in the sea, Mar. Ecol. Prog. Ser., 140, 207–216, 1996. 
Short summary
Living things decay into organic matter, which can dissolve into water (like tea brewing). Tea receives its color by absorbing light. Similarly, this material absorbs light, which can then cause chemical reactions that change it. By measuring changes in these optical properties, we found that materials from some places are more sensitive to light than others. Comparing sensitivity to light helps us understand where these materials come from and what happens as they move through water.
Final-revised paper