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. 2016 Mar 11;39(12):2387–2401. doi: 10.1007/s00300-016-1914-1

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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.

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Fig. 5 — Depletion of ¹⁴C—added as ¹⁴C-trialanine (a, b), ¹⁴C-amino acids (c, d) and ¹⁴C-glucose (e, f) in temperate grassland soils after they had been subjected to 1 (a, c, e) or 3 (b, d, f) freeze–thaw cycles (−7.5 to +5 °C). The results are fitted with a double first-order exponential decay equation. Error bars indicate ± 1SE