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Acta Botanica Gallica
Botany Letters
Volume 151, 2004 - Issue 1
453
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Original Articles

The Nothofagus nitida (Phil.) Krasser woodlands of southern Chile in the northern half of their range: phytosociological position

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Pages 3-31 | Received 18 Jun 2003, Accepted 24 Sep 2003, Published online: 26 Apr 2013
 

Abstract

A phytosociological study of the temperate rain forests dominated by an evergreen species endemic to Chile, one of the highest-rainfall woodland types of temperate South America, included within the geobotanical concept of North Patagonian Forest. Relevés were taken from throughout an area comprised between 40° and 44° 40′ South, in which these woodlands show highest floristic richness. The community's floristic and structural diversity are described and proposed as an independent association, Luzuriago polyphyllae-Nothofagetum nitidae ass. nova. The ultrahyperhumid character of this association is evidenced by the number of Hymenophyllaceae species (filmy ferns) that may occur within it.

Résumé

Cette étude phytosociologique porte sur les forêts humides tempérées dominées par une espèce à feuilles persistantes endémique du Chili, un type de forêt nord-patagon du point de vue géobotanique et une des plus arrosées de toute l'Amérique du Sud tempérée. Nous avons rassemblé des relevés tout au long du territoire compris entre les parallèles 40° et 44° 40′ Sud, là où ce type de forêt trouve son optimum floristique. Après la description de ses composition floristique et diversité structurale, nous affirmons son originalité syntaxo- nomique sous le nom de Luzuriago polyphyllae-Nothofagetum nitidae ass. nova. Son caractère ultrahyperhumide est marqué par une diversité d'espèces d'Hymenophyllaceae.

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