This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1111/JVS.12903 This article is protected by copyright. All rights reserved DR. EMMANUEL CORCKET (Orcid ID : 0000-0002-8586-2202) Article type : Research article Monika Wulf Title page Canopy composition and drought shape understorey plant assemblages in a young tree diversity experiment Running title : Canopy, drought and understorey plant assemblages Authors: Emmanuel Corcket 1 , Didier Alard 1 , Inge van Halder 2 , Hervé Jactel 2 , Begoña Garrido Diaz 2 , Edith Reuzeau 1 , Bastien Castagneyrol 2 1 Univ. Bordeaux, INRAE, BIOGECO, F-33600 Pessac, France 2 INRAE, Univ. Bordeaux, BIOGECO, F-33610 Cestas, France Correspondence Emmanuel Corcket, Université de Bordeaux, UMR1202 BIOGECO, CS 50023, 33615 PESSAC cedex, France Accepted Article