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. 2017 Aug 31;7:10279. doi: 10.1038/s41598-017-10753-9

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Predicted native distribution for the brown mussel P. perna derived by averaging an ensemble of presence-absence algorithms. (a) overall distribution, (b) P. perna distribution along the expanding front in the Northern Hemisphere, (c) Mean scores of the relative importance of the environmental variables obtained from the ensemble. Blue and red dots represent presence and absence data, respectively, obtained from field surveys and records in the literature (see Supplementary Table S7). The map was created using the open source software QGIS 2.12.3 (http://www.qgis.org/).