Articles | Volume 17, issue 4
https://doi.org/10.5194/bg-17-1133-2020
https://doi.org/10.5194/bg-17-1133-2020
Research article
 | 
28 Feb 2020
Research article |  | 28 Feb 2020

Distribution and behaviour of dissolved selenium in tropical peatland-draining rivers and estuaries of Malaysia

Yan Chang, Moritz Müller, Ying Wu, Shan Jiang, Wan Wan Cao, Jian Guo Qu, Jing Ling Ren, Xiao Na Wang, En Ming Rao, Xiao Lu Wang, Aazani Mujahid, Mohd Fakharuddin Muhamad, Edwin Sien Aun Sia, Faddrine Holt Ajon Jang, and Jing Zhang

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Cited articles

Abdel-Moati, M. A. R.: Speciation of Selenium in a Nile Delta Lagoon and SE Mediterranean Sea Mixing Zone, Estuar. Coast. Shelf S., 46, 621–628, 1998. 
Apte, S., Howard, A., Morris, R., and McCartney, M.: Arsenic, antimony and selenium speciation during a spring phytoplankton bloom in a closed experimental ecosystem, Mar. Chem., 20, 119–130, 1986. 
Asmala, E., Bowers, D. G., Autio, R., Kaartokallio, H., and Thomas, D. N.: Qualitative changes of riverine dissolved organic matter at low salinities due to flocculation, J. Geophys. Res.-Biogeo., 119, 1919–1933, 2014. 
Baines, S. B. and Fisher, N. S.: Interspecific differences in the bioconcentration of selenite by phytoplankton and their ecological implications, Mar. Ecol.-Prog. Ser., 213, 1–12, 2001. 
Balistrieri, L. S. and Chao, T. T.: Selenium Adsorption by Goethite, Soil Sci. Soc. Am. J., 51, 1145–1151, https://doi.org/10.2136/sssaj1987.03615995005100050009x, 1987. 
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Short summary
Selenium (Se) is an essential micronutrient for many organisms. Our knowledge of dissolved Se biogeochemical cycling in tropical estuaries is limited. We have found that dissolved organic Se (DOSe) was the major speciation in the peat-draining rivers and estuaries. The DOSe fractions may be associated with high molecular weight peatland-derived carbon compounds and may photodegrade to more bioavailable forms once transported to oligotrophic coastal water, where they may promote productivity.
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