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<datestamp>2018-01-11</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>The coexistence of two Cecropia species: a morphological study approach.</title>
<creator>ZALAMEA, Paul-Camilo</creator>
<creator>Heuret, Patrick</creator>
<creator>Nicolini, Éric</creator>
<creator>Sarmiento, Carolina</creator>
<creator>Fonty, Emile</creator>
<creator>Rutishauser, Ervan</creator>
<creator>Stevenson, Pablo</creator>
<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>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 - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Centre de Coopération Internationale en Recherche Agronomique pour le Développement</contributor>
<contributor>CIFOR</contributor>
<contributor>Laboratorio de Botánica & Sistemática ; Universidad de los Andes</contributor>
<source>Botany 2008</source>
<coverage>Vancouver, Canada</coverage>
<identifier>hal-01190209</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01190209</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01190209</source>
<source>Botany 2008, Jul 2008, Vancouver, Canada. 2008</source>
<identifier>PRODINRA : 182910</identifier>
<language>en</language>
<subject lang=en>Plant morphology</subject>
<subject lang=en>Periodicity</subject>
<subject lang=en>Node production</subject>
<subject lang=en>rate</subject>
<subject lang=en>Cecropia sciadophylla</subject>
<subject>[SDV.BV] Life Sciences [q-bio]/Vegetal Biology</subject>
<type>info:eu-repo/semantics/conferenceObject</type>
<type>Conference papers</type>
<description lang=en>The genus Cecropia includes pioneer trees that colonize canopy gaps and cleared areas. It is widely distributed from Mexico to Northern Argentina. Cecropia trees have architecture, which corresponds to the Rauh’s architectural model. In recent studies we have found that C. obtusa/ and C. sciadophylla, in French Guiana, have a strong annual periodicity for growth, branching and flowering processes, with annual emission of 35 nodes for C. obtusa and 25 for C. sciadophylla. Those species show different life histories since C. sciadophylla has longer life expectancy. In addition, C. sciadophylla is found more frequently in forest gaps, although in French Guiana mixed populations are found. The aim of this work was to compare developmental strategies of both species in three different field stations in French Guiana and to determine how these two species coexist during its first years of life. We studied a 20-year old population of /C. sciadophylla/ at Saint Elie’s Road, a 10-year old population of /C. obtusa/ at Paracou’s field station, and a 7-year old mixed population at Counami’s Road. /C. sciadophylla /emits 25 nodes per year in both studied populations, while/ C. obtusa /emits 35 nodes in the monospecific population and 30 nodes in the mixed population. In the monocaule stage, the lower number of nodes emitted by /C. sciadophylla/ compared to /C. obtusa /is compensated with a higher internodal length, which allows finding individuals with similar ages and lengths, but different number of nodes. The branching and flowering processes start on average three years before in /C. obtusa/, however for 12-year old individuals we observed a dominancy of C. sciadophylla over C. obtusa. In the mixed population it is likely that the different life histories would decrease competition effects allowing coexistence of both species during the first stages of life</description>
<date>2008-07-26</date>
</dc>
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