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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. 3 — Relationships between D₅₀ and densities (no. 0.1 m⁻²) of a Chironomidae (y = 406.8–4.87x; R² = 0.14, p = 0.015) and b Hydropsychidae (y = 802.9–9.95x, R² = 0.16, p = 0.008). Dashed lines represent confidence curves at α = 0.05