Articles | Volume 15, issue 9
https://doi.org/10.5194/bg-15-2891-2018
https://doi.org/10.5194/bg-15-2891-2018
Research article
 | 
16 May 2018
Research article |  | 16 May 2018

Nitrogen cycling in Sandusky Bay, Lake Erie: oscillations between strong and weak export and implications for harmful algal blooms

Kateri R. Salk, George S. Bullerjahn, Robert Michael L. McKay, Justin D. Chaffin, and Nathaniel E. Ostrom

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Cited articles

Becker, R. H., Sultan, M. I., Boyer, G. L., Twiss, M. R., and Konopko, E.: Mapping cyanobacterial blooms in the Great Lakes using MODIS, J. Great Lakes Res., 35, 447–453, https://doi.org/10.1016/j.jglr.2009.05.007, 2009. 
Beversdorf, L. J., Millter, T. R., and McMahon, K. D.: The role of nitrogen fixation in cyanobacterial bloom toxicity in a temperate, eutrophic lake, PLoS ONE, 8, e56103, https://doi.org/10.1371/journal.pone.0056103, 2013. 
Bricker, S. B., Longstaff, B., Dennison, W., Jones, A., Boicourt, K., Wicks, C., and Woerner, J.: Effects of nutrient enrichment in the nation's estuaries: A decade of change, Harmful Algae, 8, 21–32, https://doi.org/10.1016/j.hal.2008.08.028, 2008. 
Bullerjahn, G. S., McKay, R. M. L., Davis, T. W., Baker, D. B., Boyer, G. L., D'Anglada, L. V., Doucette, G. J., Ho, J. C., Irwin, E. G., Kling, C. L., Kudela, R. M., Kurmayer, R., Michalak, A. M., Ortiz, J. D., Otten, T. G., Paerl, H. W., Qin, B., Sohngen, B. L., Stumpf, R. P., Visser, P. M., and Wilhelm, S. W.: Global solutions to regional problems: Collecting global expertise to address the problem of harmful cyanobacterial blooms. A Lake Erie case study, Harmful Algae, 54, 223–238, https://doi.org/10.1016/j.hal.2016.01.003, 2016. 
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This paper highlights dynamic nitrogen cycling in a freshwater estuary, with implications for harmful algal blooms and downstream nitrogen loading. Phytoplankton and microbes actively consumed nitrogen in this system, contributing to recycling of nitrogen within the system and permanent nitrogen removal, respectively. However, delivery of nitrogen from the river and fixation of atmospheric nitrogen by phytoplankton outweighed nitrogen uptake, resulting in variable downstream nitrogen delivery.
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