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. 2016 Apr 19;9:219. doi: 10.1186/s13071-016-1492-7

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© Ya’cob et al. 2016

Open AccessThis 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. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 6 — Ordination diagram of the first two axes of canonical correspondence analysis (CCA) of 432 sampling collections (open triangles represent low-altitude sites; closed triangles represent middle-altitude sites; and open square represent high-altitude sites). Arrows denote environmental variables with strength of the environmental condition indicated by arrow length of closeness to the CCA axis