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. 2020 Jun 2;11:2770. doi: 10.1038/s41467-020-16502-3

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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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Fig. 4 — Record is based on sedaDNA data of two short chloroplast assays (trnL-gh and rbcL). a Detection of select indicator species through time. It includes data from sequences A and B sorted by age (Supplementary Table 4). b Non-metric multidimensional scaling (NMDS) plot based on presence/absence data of all taxa detected by sedaDNA. c Number of taxa detected per layer for different time periods illustrated with boxplots (centre line: median. Box limits: upper and lower quartiles. Whiskers extend to the extremes of the data, no data points were excluded). A total of 32 biologically independent samples from three time periods were compared: Bølling–Allerød (n = 15), YD (n = 8) and Early Holocene (n = 9). Source data are provided as a Source Data file.