Agritrop
Accueil

Pervasive local-scale tree-soil habitat association in a tropical forest community

Allie Elodie, Pélissier Raphaël, Engel Julien, Petronelli Pascal, Freycon Vincent, Deblauwe Vincent, Soucémarianadin Laure, Weigel Jean, Baraloto Christopher. 2015. Pervasive local-scale tree-soil habitat association in a tropical forest community. PloS One, 10 (11), 16 p.

Article de revue ; Article de recherche ; Article de revue à facteur d'impact Revue en libre accès total
[img]
Prévisualisation
Version publiée - Anglais
Utilisation soumise à autorisation de l'auteur ou du Cirad.
Allié et al. 2015 Plos One.pdf

Télécharger (884kB) | Prévisualisation

Url - jeu de données - Entrepôt autre : https://figshare.com/articles/_Pervasive_Local_Scale_Tree_Soil_Habitat_Association_in_a_Tropical_Forest_Community_/1593441 / Url - jeu de données - Entrepôt autre : https://figshare.com/articles/_Study_site_/1593436

Quartile : Q1, Sujet : MULTIDISCIPLINARY SCIENCES

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie; Staps

Résumé : We examined tree-soil habitat associations in lowland forest communities at Paracou, French Guiana. We analyzed a large dataset assembling six permanent plots totaling 37.5 ha, in which extensive LIDAR-derived topographical data and soil chemical and physical data have been integrated with precise botanical determinations. Map of relative elevation from the nearest stream summarized both soil fertility and hydromorphic characteristics, with seasonally inundated bottomlands having higher soil phosphate content and base saturation, and plateaus having higher soil carbon, nitrogen and aluminum contents. We employed a statistical test of correlations between tree species density and environmental maps, by generating Monte Carlo simulations of random raster images that preserve autocorrelation of the original maps. Nearly three fourths of the 94 taxa with at least one stem per ha showed a significant correlation between tree density and relative elevation, revealing contrasted species-habitat associations in term of abundance, with seasonally inundated bottomlands (24.5% of species) and well-drained plateaus (48.9% of species). We also observed species preferences for environments with or without steep slopes (13.8% and 10.6%, respectively). We observed that closely-related species were frequently associated with different soil habitats in this region (70% of the 14 genera with congeneric species that have a significant association test) suggesting species-habitat associations have arisen multiple times in this tree community. We also tested if species with similar habitat preferences shared functional strategies. We found that seasonally inundated forest specialists tended to have smaller stature (maximum diameter) than species found on plateaus. Our results underline the importance of tree-soil habitat associations in structuring diverse communities at fine spatial scales and suggest that additional studies are needed to disentangle community assembly mechanisms related to dispersal limitation, biotic interactions and environmental filtering from species-habitat associations. Moreover, they provide a framework to generalize across tropical forest sites.

Mots-clés Agrovoc : forêt tropicale humide, facteur édaphique, composition botanique, espacement, propriété physicochimique du sol, altitude, hydrologie, modèle de simulation, méthode statistique, dynamique des populations, adaptation physiologique, écologie forestière, distribution géographique

Mots-clés géographiques Agrovoc : Guyane française, France

Classification Agris : K01 - Foresterie - Considérations générales
F70 - Taxonomie végétale et phytogéographie
P33 - Chimie et physique du sol
F40 - Écologie végétale
U10 - Informatique, mathématiques et statistiques

Champ stratégique Cirad : Axe 6 (2014-2018) - Sociétés, natures et territoires

Auteurs et affiliations

  • Allie Elodie, UAG (GLP)
  • Pélissier Raphaël, IRD (FRA)
  • Engel Julien, CNRS (FRA)
  • Petronelli Pascal, CIRAD-ES-UMR Ecofog (GUF)
  • Freycon Vincent, CIRAD-ES-UPR BSef (FRA)
  • Deblauwe Vincent
  • Soucémarianadin Laure
  • Weigel Jean, AgroParisTech (FRA)
  • Baraloto Christopher, Florida International University (USA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/578845/)

Voir la notice (accès réservé à Agritrop) Voir la notice (accès réservé à Agritrop)

[ Page générée et mise en cache le 2024-01-28 ]