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. 2016 Jun 22;12:27. doi: 10.1186/s13002-016-0099-6

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© The Author(s). 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. 1 — Study area. a Position of Tuscany (grey) and Emilia-Romagna (dark grey) in Europe b PT: province of Pistoia (Tuscany); BO: province of Bologna (Emilia-Romagna). c In white: the six municipalities involved in the study; AVRT: the Alta Valle del Reno, Tuscan side; AVRB: the Alta Valle del Reno, Emilian side