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Institut de recherche pour le développement (IRD)
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Office national des forêts (ONF)
Office national des forêts (ONF)
Office national des forêts (ONF)
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Habitats: transects to sample the local environmental variability in French Guiana since 2005.

Type: datasetLicense: not specifiedCategory: geoscientific informationScale: 1 / 5000Last update: 15 years ago
Habitats and biotopes

Habitats inventories have been installed over the years in French Guiana using a standardized multi-scale protocol. In each site, we established two to four transects, about 2.5 to 3-km long in different directions to optimally sample the local environmental variability. Each 20-m width transect was divided into 100 m segments so that the basic sampling units are 0.2-ha plots. All the plots were geo-referenced using a Garmin 76CSx GPS receiver and delineated in the field using a Vertex laser clinometer. In each plot, all trees (including palm-trees) greater than 20 cm diameter at breast height (DBH) or above the buttresses were identified by local forest-plotters from ONF. They referred to a vernacular nomenclature whose names correspond either to a botanical species, genus or family. Tested against true botanical data on 4279 trees (Guitet et al., 2014), this nomenclature proved 83% effective accuracy at the family level and 74% at the level of the most precise botanical equivalent…

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Data origin:

Under development.

Purpose: not specified

Data life cycle, according to producer:
Creation date: November 1, 2005
Update frequency: irregular
State: on going


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