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. 2017 May 2;7:1337. doi: 10.1038/s41598-017-01418-8

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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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Acid phosphatase activity on different Soil weathering, Community and Forest types. Dependence of TN (A) and phosphatase activity (D) on the amount of soil weathering. Only sites with information for soil type were included (n = 204). Dependence of TN (B) and phosphatase activity (E) on community type (n = 291). Dependence of TN (C) and phosphatase activity (F) on forest class. Only sites with an accurate description of the vegetation were included (n = 171). Boxplot show median values (solid horizontal line), 50^th percentile values (box outline), 90^th percentile values (whiskers), and outlier values. Letters represent the results of Tukey’s post-hoc comparisons of group means.