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<title lang=en>Spatial variability of soil microbial functioning in a tropical rainforest of French Guiana using nested sampling</title>
<creator>Fromin, Nathalie</creator>
<creator>Saby, Nicolas</creator>
<creator>Lensi, Robert</creator>
<creator>Brunet, Didier</creator>
<creator>Porte, Benjamin</creator>
<creator>Domenach, Anne-Marie</creator>
<creator>ROGGY, Jean-Christophe</creator>
<contributor>Centre d’Ecologie Fonctionnelle et Evolutive (CEFE) ; Institut de Recherche pour le Développement (IRD [France-Sud]) - Centre National de la Recherche Scientifique (CNRS) - Université de Montpellier (UM) - Institut national de la recherche agronomique [Montpellier] (INRA Montpellier) - École pratique des hautes études (EPHE) - Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro) - Université Paul-Valéry - Montpellier 3 (UM3) - Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)</contributor>
<contributor>Unité INFOSOL ; Institut National de Recherche Agronomique</contributor>
<contributor>Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes (Eco&Sols) ; Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro) - Institut National de la Recherche Agronomique (INRA) - Institut de Recherche pour le Développement (IRD) - Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)</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>ACI/Ecosphere Continentale; Fonctionnement et Dynamique de la Biosphere Continentale: Processus; Echanges de Matieres et d'Energie; Modelisation (Centre National de la Recherche Scientifique, France) program DIPROTROFLUX</contributor>
<source>ISSN: 0016-7061</source>
<source>Geoderma</source>
<publisher>Elsevier</publisher>
<identifier>hal-01032409</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01032409</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01032409</source>
<source>Geoderma, Elsevier, 2013, 197, pp.98 - 107. 〈10.1016/j.geoderma.2012.12.009〉</source>
<identifier>DOI : 10.1016/j.geoderma.2012.12.009</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geoderma.2012.12.009</relation>
<language>en</language>
<subject lang=en>Soil microbial processes</subject>
<subject lang=en>Respiration</subject>
<subject lang=en>Denitrification</subject>
<subject lang=en>Soil organic matter</subject>
<subject lang=en>Tree influence potential</subject>
<subject lang=en>Scale dependent process</subject>
<subject lang=en>SUBSTRATE-INDUCED RESPIRATION</subject>
<subject lang=en>NEAR-INFRARED SPECTROSCOPY</subject>
<subject lang=en>COASTAL BRITISH-COLUMBIA</subject>
<subject lang=en>LANDSCAPE SCALE</subject>
<subject lang=en>ORGANIC-MATTER</subject>
<subject lang=en>TREE-INFLUENCE</subject>
<subject lang=en>WATER CONTENT</subject>
<subject lang=en>DIVERSITY</subject>
<subject lang=en>COMMUNITIES</subject>
<subject lang=en>PATTERNS</subject>
<subject>[SDV.SA] Life Sciences [q-bio]/Agricultural sciences</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Understanding the pattern in spatial distribution of soil microbial processes is critical to understand the environmental factors that regulate them as well as to scale up these processes to ecosystem. Soil samples from a I ha tropical rainforest plot (Paracou, French Guiana) were analyzed according a nested sampling approach using different separation distances ranging from 0.4 to 40 m. The variability of substrate induced respiration (SIR) and of denitrification enzyme activity (DEA) was characterized in relation to various soil properties (total C and N contents, NIRS related index of soil organic matter quality, SOMQ and index of tree influence potential, IP). The variability of SIR and DEA was higher than that of environmental properties. The patterns of accumulated variance as a function of distance varied among the soil properties. The variability of SIR and DEA mainly occurred at small (1 m) scale (and at the 10-40 m-scales for SIR), probably reflecting the quality of litter input that results of the influence of local assemblage of different tree species, though changes in the soil N and C contents. Indeed, total soil C and N contents explained the microbial properties at every scale. Coefficients of codispersion showed that neither SOMQ nor IP did correlate with SIR and DEA, and confirmed that total C and N contents explained microbial properties in a scale dependent and complex manner. Such spatial dependency underlines the importance of soil heterogeneity in this tropical forest with implications for sampling strategies when studying the microbial processes and their response to disturbances. (C) 2012 Elsevier B.V. All rights reserved.</description>
<date>2013</date>
</dc>
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