Articles | Volume 15, issue 1
Biogeosciences, 15, 353–367, 2018
Biogeosciences, 15, 353–367, 2018

Research article 17 Jan 2018

Research article | 17 Jan 2018

Use of flow cytometry and stable isotope analysis to determine phytoplankton uptake of wastewater derived ammonium in a nutrient-rich river

Calla M. Schmidt et al.

Related authors

Methane and sulfate dynamics in sediments from mangrove-dominated tropical coastal lagoons, Yucatán, Mexico
Pei-Chuan Chuang, Megan B. Young, Andrew W. Dale, Laurence G. Miller, Jorge A. Herrera-Silveira, and Adina Paytan
Biogeosciences, 13, 2981–3001,,, 2016
Short summary

Related subject area

Biogeochemistry: Stable Isotopes & Other Tracers
Summertime productivity and carbon export potential in the Weddell Sea, with a focus on the waters adjacent to Larsen C Ice Shelf
Raquel F. Flynn, Thomas G. Bornman, Jessica M. Burger, Shantelle Smith, Kurt A. M. Spence, and Sarah E. Fawcett
Biogeosciences, 18, 6031–6059,,, 2021
Short summary
Particulate biogenic barium tracer of mesopelagic carbon remineralization in the Mediterranean Sea (PEACETIME project)
Stéphanie H. M. Jacquet, Christian Tamburini, Marc Garel, Aurélie Dufour, France Van Vambeke, Frédéric A. C. Le Moigne, Nagib Bhairy, and Sophie Guasco
Biogeosciences, 18, 5891–5902,,, 2021
Short summary
Hydrogen and carbon isotope fractionation factors of aerobic methane oxidation in deep-sea water
Shinsuke Kawagucci, Yohei Matsui, Akiko Makabe, Tatsuhiro Fukuba, Yuji Onishi, Takuro Nunoura, and Taichi Yokokawa
Biogeosciences, 18, 5351–5362,,, 2021
Short summary
Host-influenced geochemical signature in the parasitic foraminifera Hyrrokkin sarcophaga
Nicolai Schleinkofer, David Evans, Max Wisshak, Janina Vanessa Büscher, Jens Fiebig, André Freiwald, Sven Härter, Horst R. Marschall, Silke Voigt, and Jacek Raddatz
Biogeosciences, 18, 4733–4753,,, 2021
Short summary
Comparing modified substrate-induced respiration with selective inhibition (SIRIN) and N2O isotope approaches to estimate fungal contribution to denitrification in three arable soils under anoxic conditions
Lena Rohe, Traute-Heidi Anderson, Heinz Flessa, Anette Goeske, Dominika Lewicka-Szczebak, Nicole Wrage-Mönnig, and Reinhard Well
Biogeosciences, 18, 4629–4650,,, 2021
Short summary

Cited articles

Altabet, M., Pilskaln, C., Thunell, R., Pride, C., Sigman, D., Chavez, F., and Francois, R.: The nitrogen isotope biogeochemistry of sinking particles from the margin of the Eastern North Pacific, Deep-Sea Res. Pt. I, 46, 655–679,, 1999.
Berg, G. M., Glibert, P. M., Jorgensen, N. O. G., Balode, M., and Purina, I.: Variability in Inorganic and Organic Nitrogen Uptake Associated with Riverine Nutrient Input in the Gulf of Riga, Baltic Sea, Estuaries, 24, 204,, 2001.
Canuel, E. A., Cloern, J. E., Ringelberg, D. B., Guckert, J. B., and Rau, G. H.: Molecular and isotopic tracers used to examine sources of organic matter and its incorporation into the food webs of San Francisco Bay, Limnol. Oceanogr., 40, 67–81,, 1995.
Casciotti, K. L., Sigman, D. M., Hastings, M. G., Böhlke, J. K., and Hilkert, A.: Measurement of the oxygen isotopic composition of nitrate in seawater and freshwater using the denitrifier method, Anal. Chem., 74, 4905–4912,, 2002.
Cifuentes, L. A., Fogel, M. L., Pennock, J. R., and Sharp, J. H.: Biogeochemical factors that influence the stable nitrogen isotope ratio of dissolved ammonium in the Delaware Estuary, Geochim. Cosmochim. Ac., 53, 2713–2721,, 1989.
Short summary
In this study we measured phytoplankton use of nitrogen from wastewater treatment plant effluent in a river. The project was designed to test a new technique for isolating phytoplankton from river water prior to isotopic analysis in order to use trace nitrogen source use under environmental conditions. This study helps us understand the fate of anthropogenic nitrogen in aquatic ecosystems, which is essential to establishing effective nutrient management plans.
Final-revised paper