Publication Cover
Acta Botanica Gallica
Botany Letters
Volume 149, 2002 - Issue 3
496
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Original Articles

Milieux et formations végétales de Guyane

Pages 319-337 | Published online: 26 Apr 2013
 

Abstract

The physiognomy as well as the main floristic features of the vegetation types found in French Guiana are described and illustrated. Their distribution is shown on maps. The lowland vegetation, on marine sediment, includes principally beach communities, mangrove forests, swamp forests and savannahs. The upland vegetation, on the hills of the Precambrian base, consists of various forest types depending on the soils, the drainage conditions and the altitude. Occasionally, herbaceous communities are observed on the rocks of the streams and on granite outcrops.

Résumé

La physionomie ainsi que les principaux caractères floristiques des formations végétales de Guyane sont décrits et illustrés. Leur répartition est visualisée sur des cartes. La végétation des « terres basses », sur alluvions marines comprend essentiellement des groupements littoraux, des mangroves, des forêts marécageuses et des savanes. La végétation des « terres hautes », sur collines du socle précambrien, est essentiellement formée de différents types de forêts selon la nature du sol, le drainage et l'altitude. Plus rarement, on observe des groupements herbacés sur les rochers des cours d'eau et sur les insel- bergs granitiques.

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