1. Fenner School of Environment and Society, 141 Linnaeus Way, The Australian National University, Canberra, ACT, 2600, Australia.
2. Institut des Sciences de la Forêt Tempéré (ISFORT), Université du Québec en Outaouais (UQO), 58, Rue Principale, Ripon, QC JOV 1V0, Canada.
3. Center for Forest Research (CEF), Université du Québec à Montréal, P.O. Box 8888, Centre-ville Station, Montréal, QC H3C 3P8, Canada.
4. School of Plant Biology, The University of Western Australia, Crawley, 6009, Western Australia.