Articles | Volume 20, issue 14
https://doi.org/10.5194/bg-20-2857-2023
https://doi.org/10.5194/bg-20-2857-2023
Research article
 | 
18 Jul 2023
Research article |  | 18 Jul 2023

Maximum respiration rates in hyporheic zone sediments are primarily constrained by organic carbon concentration and secondarily by organic matter chemistry

James C. Stegen, Vanessa A. Garayburu-Caruso, Robert E. Danczak, Amy E. Goldman, Lupita Renteria, Joshua M. Torgeson, and Jacqueline Hager

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Cited articles

Arrieta, J. M., Mayol, E., Hansman, R. L., Herndl, G. J., Dittmar, T., and Duarte, C. M.: Dilution limits dissolved organic carbon utilization in the deep ocean, Science, 348, 331–333, https://doi.org/10.1126/science.1258955, 2015. 
Battin, T. J., Kaplan, L. A., Newbold, J. D., and Hendricks, S. P.: A mixing model analysis of stream solute dynamics and the contribution of a hyporheic zone to ecosystem function, Freshwater Biol., 48, 995–1014, https://doi.org/10.1046/j.1365-2427.2003.01062.x, 2003. 
Bernhardt, E. S., Blaszczak, J. R., Ficken, C. D., Fork, M. L., Kaiser, K. E., and Seybold, E. C.: Control Points in Ecosystems: Moving Beyond the Hot Spot Hot Moment Concept, Ecosystems, 20, 665–682, https://doi.org/10.1007/s10021-016-0103-y, 2017. 
Boulton, A. J., Findlay, S., Marmonier, P., Stanley, E. H., and Valett, H. M.: The functional significance of the hyporheic zone in streams and rivers, Annu. Rev. Ecol. Syst., 29, 59–81, https://doi.org/10.1146/annurev.ecolsys.29.1.59, 1998. 
Bramer, L. M., White, A. M., Stratton, K. G., Thompson, A. M., Claborne, D., Hofmockel, K., and McCue, L. A.: ftmsRanalysis: An R package for exploratory data analysis and interactive visualization of FT-MS data, PLOS Comput. Biol., 16, e1007654, https://doi.org/10.1371/journal.pcbi.1007654, 2020. 
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Short summary
Chemical reactions in river sediments influence how clean the water is and how much greenhouse gas comes out of a river. Our study investigates why some sediments have higher rates of chemical reactions than others. We find that to achieve high rates, sediments need to have two things: only a few different kinds of molecules, but a lot of them. This result spans about 80 rivers such that it could be a general rule, helpful for predicting the future of rivers and our planet.
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