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<datestamp>2018-01-11</datestamp>
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<title lang=en>Assessing foliar chlorophyll contents with the SPAD-502 chlorophyll meter: a calibration test with thirteen tree species of tropical rainforest in French Guiana</title>
<creator>Coste, Sabrina</creator>
<creator>Baraloto, Christopher</creator>
<creator>Leroy, Céline</creator>
<creator>Marcon, Eric</creator>
<creator>Renaud, Amélie</creator>
<creator>Richardson, Andrew D.</creator>
<creator>Roggy, Jean-Christophe</creator>
<creator>Schimann, Heidy</creator>
<creator>Uddling, Johan</creator>
<creator>Hérault, Bruno</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>
<description>International audience</description>
<source>ISSN: 1286-4560</source>
<source>EISSN: 1297-966X</source>
<source>Annals of Forest Science</source>
<publisher>Springer Verlag/EDP Sciences</publisher>
<identifier>hal-00883628</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00883628</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00883628/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00883628/file/hal-00883628.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00883628</source>
<source>Annals of Forest Science, Springer Verlag/EDP Sciences, 2010, 67 (6), 〈10.1051/forest/2010020〉</source>
<identifier>DOI : 10.1051/forest/2010020</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1051/forest/2010020</relation>
<language>en</language>
<subject lang=en>neotropical trees</subject>
<subject lang=en>chlorophyll estimate</subject>
<subject lang=en>model calibration</subject>
<subject lang=en>homographic functions</subject>
<subject>[SDV.SA.SF] Life Sciences [q-bio]/Agricultural sciences/Silviculture, forestry</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en> Chlorophyll meters such as the SPAD-502 offer a simple, inexpensive and rapid method to estimate foliar chlorophyll content. However, values provided by SPAD-502 are unitless and require empirical calibrations between SPAD units and extracted chlorophyll values. * Leaves of 13 tree species from the tropical rain forest in French Guiana were sampled to select the most appropriate calibration model among the often-used linear, polynomial and exponential models, in addition to a novel homographic model that has a natural asymptote.* The homographic model best accurately predicted total chlorophyll content (μg cm−2) from SPAD units (R2 = 0.89). Interspecific differences in the homographic model parameters explain less than 7% of the variation in chlorophyll content in our data set. * The utility of the general homographic model for a variety of research and management applications clearly outweighs the slight loss of model accuracy due to the abandon of the species' effect.</description>
<date>2010</date>
<rights>info:eu-repo/semantics/OpenAccess</rights>
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