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<datestamp>2018-01-11</datestamp>
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<title lang=en>Leaf functional response to increasing atmospheric CO(2) concentrations over the last century in two northern Amazonian tree species: a historical δ(13) C and δ(18) O approach using herbarium samples.</title>
<creator>Bonal, Damien</creator>
<creator>Ponton, Stéphane</creator>
<creator>Le Thiec, Didier</creator>
<creator>Richard, Béatrice</creator>
<creator>Ningre, Nathalie</creator>
<creator>Hérault, Bruno</creator>
<creator>Ogée, Jérôme</creator>
<creator>Gonzalez, Sophie</creator>
<creator>Pignal, Marc</creator>
<creator>Sabatier, Daniel</creator>
<creator>Guehl, Jean-Marc</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 - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Ecologie et Ecophysiologie Forestières (EEF) ; Institut National de la Recherche Agronomique (INRA) - Université de Lorraine (UL)</contributor>
<contributor>Commissariat général du Plan (CGP) ; Premier ministre</contributor>
<contributor>Écologie fonctionnelle et physique de l'environnement (EPHYSE - UR1263) ; Institut National de la Recherche Agronomique (INRA)</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>INRA - Mathématiques et Informatique Appliquées (Unité MIAJ) ; Institut National de la Recherche Agronomique (INRA)</contributor>
<description>International audience</description>
<source>ISSN: 0140-7791</source>
<source>EISSN: 1365-3040</source>
<source>Plant, Cell and Environment</source>
<publisher>Wiley</publisher>
<identifier>halsde-00675165</identifier>
<identifier>https://hal.archives-ouvertes.fr/halsde-00675165</identifier>
<source>https://hal.archives-ouvertes.fr/halsde-00675165</source>
<source>Plant, Cell and Environment, Wiley, 2011, 34 (8), pp.1332-44. 〈10.1111/j.1365-3040.2011.02333.x〉</source>
<identifier>DOI : 10.1111/j.1365-3040.2011.02333.x</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-3040.2011.02333.x</relation>
<identifier>PUBMED : 21486302</identifier>
<relation>info:eu-repo/semantics/altIdentifier/pmid/21486302</relation>
<language>en</language>
<subject lang=en>Carbon isotope composition</subject>
<subject lang=en>Environmental change</subject>
<subject lang=en>Herbarium</subject>
<subject lang=en>Oxygen isotope composition</subject>
<subject lang=en>Photosynthesis</subject>
<subject lang=en>Stomata</subject>
<subject lang=en>Tropical rainforests</subject>
<subject>[SDE.BE] Environmental Sciences/Biodiversity and Ecology</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>We assessed the extent of recent environmental changes on leaf morphological (stomatal density, stomatal surface, leaf mass per unit area) and physiological traits (carbon isotope composition, δ(13)C(leaf) , and discrimination, Δ(13)C(leaf) , oxygen isotope composition, δ(18)O(leaf) ) of two tropical rainforest species (Dicorynia guianensis; Humiria balsamifera) that are abundant in the Guiana shield (Northern Amazonia). Leaf samples were collected in different international herbariums to cover a 200 year time-period (1790-2004) and the whole Guiana shield. Using models describing carbon and oxygen isotope fractionations during photosynthesis, different scenarios of change in intercellular CO(2) concentrations inside the leaf (C(i)), stomatal conductance (g), and photosynthesis (A) were tested in order to understand leaf physiological response to increasing air CO(2) concentrations (C(a)). Our results confirmed that both species displayed physiological response to changing C(a) . For both species, we observed a decrease of about 1.7‰ in δ(13)C(leaf) since 1950, without significant change in Δ(13)C(leaf) and leaf morphological traits. Furthermore, there was no clear change in δ(18)O(leaf) for Humiria over this period. Our simulation approach revealed that an increase in A, rather than a decrease in g, explained the observed trends for these tropical rainforest species, allowing them to maintain a constant ratio of C(i)/C(a) .</description>
<date>2011-08</date>
</dc>
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