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. 2018 Nov 1;9:2619. doi: 10.3389/fmicb.2018.02619

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Copyright © 2018 Lee, Caruso, Archer, Gillman, Lau, Cary, Lee and Pointing.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The relationship between samples, OTUs, and geochemical factors visualized via canonical correspondence analysis (CCA) with type III (symmetric) scaling. Samples from the zones, ranging from closest (1) to furthest (4) away from the pond are represented by color-coded circles and individual OTUs are represented as dots. Top six overall most relatively abundant OTUs are specifically marked. Quantitative explanatory variables are represented by as arrows. Proximity of the samples and OTUs to the direction of the arrow indicates likelihood the response variables are to be found with the geochemical factor.