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. 2018 May 10;190(6):339. doi: 10.1007/s10661-018-6716-1

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© The Author(s) 2018

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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.

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Fig. 2 — Median sediment size, D₅₀, by study riffle over time (F_5,70 = 12.44, p < 0.0001). Riffle 1 is the reference riffle, riffle 2–6 are upstream (of previous dam), and riffle 7 is downstream of the previous dam. Significant pairwise differences are indicated by different letters a and b (Tukey’s HSD: p < 0.05). For visual clarity, error bars are not included. However, please see Supplementary Material: Table S1 for details on data variability