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. 2020 May 26;10:8722. doi: 10.1038/s41598-020-65520-0

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Drivers of DIN uptake velocity. Uptake velocity (V_f) of NH₄⁺ (circles) and NO₃⁻ (triangles) grouped as DIN V_f from streams across the burn gradient (10 red, 25 orange, 50 blue, 60 yellow, and>100 green) related to (A) ambient DIN concentration, (B) molar DOC:DIN ratios, and (C) relative abundance of polyphenolics. V_f values here are from 2016 through 2018. The n-values for NH₄⁺V_f is 18 and NO₃¯ V_f is 10.