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. 2019 Feb 22;10:191. doi: 10.3389/fpls.2019.00191

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Copyright © 2019 Mäki, Aalto, Hellén, Pihlatie and Bäck.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Mean (A) monoterpene, (B) methanol, and (C) acetone fluxes (n = 3 chambers), and standard deviation (μg m^-2 h^-1) during different times of the day from the boreal forest floor in spring, summer, and autumn, from 2010 to 2017. Summer starts when daily mean temperature is over 10°C, and autumn begins when daily mean temperature is below 10°C.