4.1 Article

Ancientness and maturity: Two complementary qualities of forest ecosystems

Journal

COMPTES RENDUS BIOLOGIES
Volume 338, Issue 1, Pages 58-73

Publisher

centre Mersenne pour ldition scientifique ouverte
DOI: 10.1016/j.crvi.2014.10.004

Keywords

Ancientness; Maturity; Dynamic; Naturality of forest

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Ancientness and maturity are two major qualities of forest ecosystems. They are components of naturalness and are affected by human impact. These qualities and the associated terms are often mixed up and incorrectly used. We have carried out a synthesis in order to propose an adapted French terminology based on international literature. The topics of ancientness and maturity for biodiversity and soil characteristics are explained. This review leads us to submit different potential thresholds for ancientness and maturity. An analysis on ancientness and maturity on forest data for France leads to the conclusion that about 29% of all forests can be considered ancient woodland, and less than 3% of the even-age forest is older than the harvesting age. (C) 2014 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.

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