Supplement. .

<h2>File List</h2><blockquote> <p><a href="Tank_et_al_uptake_data.txt">Tank_et_al_uptake_data.txt</a></p> </blockquote><h2>Description</h2><blockquote> <p>The Tank_et_al_uptake_data.txt file contains 514 lines of tab-delimited data from the literature that was used to assess relationship between inorganic nitrogen uptake parameters and stream discharge, and to compare NO<sub>3</sub>-N uptake parameters with NH<sub>4</sub>-N uptake parameters. Parameter abbreviations are as follows: Cb = background concentration in µg/L; Cp = plateau concentration in µg/L; Sw = uptake length in meters; Vf = uptake velocity in mm/min. Missing values are indicated by a period (‘.’). Full citations associated with author_date_code in column 1 are given in Tank et al. <a href="appendix-A.htm">Appendix A</a>.</p> </blockquote>