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<datestamp>2018-01-11</datestamp>
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<title lang=en>Seasonal variations in phenological traits: leaf shedding and cambial activity in Parkia nitida Miq. and Parkia velutina Benoist (Fabaceae) in tropical rainforest</title>
<creator>Morel, Hélène</creator>
<creator>Mangenet, Thomas</creator>
<creator>Beauchêne, Jacques</creator>
<creator>Ruelle, Julien</creator>
<creator>Nicolini, Eric</creator>
<creator>Heuret, Patrick</creator>
<creator>Thibaut, Bernard</creator>
<contributor>Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Université de Guyane (UG) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut national de la recherche agronomique [Montpellier] (INRA Montpellier) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Institut de Recherche pour le Développement (IRD [France-Sud])</contributor>
<contributor>Laboratoire d'Etudes des Ressources Forêt-Bois (LERFoB) ; Institut National de la Recherche Agronomique (INRA) - AgroParisTech</contributor>
<contributor>Laboratoire de Mécanique et Génie Civil (LMGC) ; Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Bois (BOIS) ; Laboratoire de Mécanique et Génie Civil (LMGC) ; Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>ISSN: 0931-1890</source>
<source>EISSN: 1432-2285</source>
<source>Trees - Structure and Function</source>
<publisher>Springer Verlag</publisher>
<identifier>hal-01135166</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01135166</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01135166/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01135166/file/Art_Morel_al_Seasonal_variations_phenological_traits_2015.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01135166</source>
<source>Trees - Structure and Function, Springer Verlag, 2015, 29 (4), pp.973-984. 〈10.1007/s00468-015-1177-4〉</source>
<identifier>DOI : 10.1007/s00468-015-1177-4</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1007/s00468-015-1177-4</relation>
<language>en</language>
<subject lang=en>cambial activity</subject>
<subject lang=en>climate</subject>
<subject lang=en>leaf shedding pattern</subject>
<subject lang=en>tropical rain forest</subject>
<subject lang=en>French Guiana</subject>
<subject>[SDV.BV.BOT] Life Sciences [q-bio]/Vegetal Biology/Botanics</subject>
<subject>[SDV.EE.ECO] Life Sciences [q-bio]/Ecology, environment/Ecosystems</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Studies on the periodicity of wood formation provide essential data on tree age and factors related to the control of tree growth. The aim of this work was to investigate the cambial phenology and its relation with leaf phenology and climatic seasonality in two tropical rainforest species belonging to the genus Parkia known for having a contrasted leaf phenology. From wood samples collected at 15 day intervals from April 2009 to February 2012 in five trees of both species, we quantified cambial activity by counting layers of cells in cambial zone, enlarging cells zone and wall thickening cells zone from wood prepared anatomical micro sections. In the same time, we observed leaf shedding behaviors in the crown of the studied trees. In both species, cambial activity was significantly reduced during leafless period. However, the cambial activity of P. velutina was not affected by seasonality while in P. nitida, we found a significant positive effect of the dry season on cambial activity. This diminution of activity associated to leaf shedding occurred annually during the dry season in P. nitida whereas the trees were not synchronous in time for P. velutina. On the contrary that is often admitted, the rest cambial period can be independent of environmental restriction such as dry season. Leaf phenology remains the best proxy to estimate cambial activity.</description>
<date>2015</date>
</dc>
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