Received: 17 November 2020 / Revised: 14 December 2020 / Accepted: 23 December 2020 / Published: 28 December 2020 This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0). This article belongs to the Section Forest Ecology and Management. |