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<title lang=en>Fine-scale microhabitat heterogeneity in a French Guianan forest</title>
<creator>Baroloto, Christopher</creator>
<creator>Couteron, Pierre</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>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>
<description>International audience</description>
<source>Botropica</source>
<identifier>halsde-00520179</identifier>
<identifier>https://hal.archives-ouvertes.fr/halsde-00520179</identifier>
<source>https://hal.archives-ouvertes.fr/halsde-00520179</source>
<source>Botropica, 2010, 42 (4), pp.420-428. 〈10.1111/j.1744-7429.2009.00620.x〉</source>
<identifier>DOI : 10.1111/j.1744-7429.2009.00620.x</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1744-7429.2009.00620.x</relation>
<language>en</language>
<subject lang=en>Canopy gap</subject>
<subject lang=en>Geostatistics</subject>
<subject lang=en>Light availability</subject>
<subject lang=en>Microclimat</subject>
<subject lang=en>Soil moisture</subject>
<subject lang=en>Soil nutrients</subject>
<subject lang=en>Topography</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 examined fine-scale heterogeneity of environmental conditions in a primary rain forest in French Guiana to describe variation in microhabitats that plants may experience during establishment. We characterized both the range as well as the spatial structuring of 11 environmental factors important for seedling establishment in six hexagonal sampling grids, one each in gap and understory sites at three points representing the predominant geomorphic units in this primary forest. Each grid contained 37 sampling points separated by 31 cm-20 m. Monte-Carlo tests of semivariograms against complete spatial randomness indicated that for many variables in all six sampling grids, spatial dependence did not exceed 1 m. A principal component analysis of all sampling points revealed a lack of spatial microhabitat structure, rather than homogeneous patches associated with canopy structure or geomorphology. Our results suggest that ample fine-scale spatial heterogeneity exists to support the coexistence of plant species with differential abiotic requirements for regeneration.</description>
<date>2010</date>
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