Nom du corpus

Corpus Systématique Végétale

Titre du document

Vegetation in a high Andean transect between Turi and Cerro León in Northern Chile

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Andean vegetation
  • Belt
  • Chile
  • Gradient analysis
  • Phytosociology
Nom du fichier dans la ressource
Syst_veg6_v2_024464
Auteur(s)
  • C. Villagrán 1
  • J. J. Armesto 2
  • M. T. Kalin Arroyo 1
Affiliation(s)
  • 1) Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
  • 2) Department of Botany, Rutgers University, P.O. Box 1059, 08854, Piscataway, NJ, USA
Résumé

This paper reports the results of a phytosociological and gradient analysis of the vegetation occurring along an altitudinal gradient from Turi (3100 m) to Cerro León (4250 m) on the western flank of the Andes in northern Chile (22°06′–22°22′ S; 68°15′–68°07′ W). Along the transect, the total cover of vegetation ranges from 2.5% at the lower end to 35.7% at 4000 m altitude. Four major physiognomic zones, including six associations are recognized within the transect studied: (1) The ‘Pre-Puna’ belt (2700–3150 m), characterized by a sparse cover of xerophytic subshrubs, including two associations: Acantholippia deserticola-Franseria meyeniana, which occurs over the sedimentary sands around Turi, and Franseria meyeniana-Helogyne macrogyne-Helianthocereus atacamensis, restricted to ravines and canyons. (2) The ‘Puna’ belt (3150–3850 m), physiognomically dominated by shrubs and presenting the highest vegetational cover, including the: Fabiana densa-Baccharis boliviensis, and Junellia seriphioides-Baccharis incarum-Lampaya medicinalis, associations. (3) The ‘High-Andean’ belt, localized above the ‘Puna’, including the Fabiana bryoides-Adesmia horrida and Oxalis exigua-Mulinum crassifolium associations. (4) The ‘Subnival’ belt, a high mountain semi-desert with a poorly developed vegetation. Only three species occur at the upper vegetational limit (4380 m). The phytosociological scheme proposed in this paper can be paralleled with that by Ruthsatz (1977) for the eastern flank of the Andes. A marked contrast in species richness and phytosociological complexity between these Andean regions is pointed out. Lower species richness of the Chilean transect is related to the presence of the Atacama desert, which extends from the coast up to 2700 m in the study area.

Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - ecologie animale, vegetale et microbienne
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Plant Science
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Ecology
Identifiant ISTEX
022444135E54FC78AAFC74263CE6CD8D076B4B0B
Revue

Vegetatio

Année de publication
1981
Présence de XML structuré
Non
Score qualité du texte
10
Version PDF
1.3
Type de publication
Journal
ark:/67375/1BB-0LZBZ3XZ-0
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