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. 2020 Mar 24;10:5334. doi: 10.1038/s41598-020-62073-0

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© The Author(s) 2020

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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Linear regression models of the compartments fruit biomass, leaf biomass and pollen concentration. (a) pollen concentration and fruit biomass, (b) leaf biomass and pollen concentration and (c) leaf biomass and fruit biomass of European beech; in percentage of maximum value per site. For (a) only measurements with more than 10% of pollen concentration were used, for (b,c) all measurements were used. For (a) log-transformed fruit biomass was used. Exceptionally low leaf biomass values occurred in SCH in 2011 and in LAU in 2018. Lines: linear regression lines, grey area: 95% confidence interval. LAU Lausanne, SCH Schänis.