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Ecología de los robledales de altura (bosque de Quercus) maduros y en recuperación en la Cordillera de Talamanca, Costa Rica

by Zamora, N; Kappelle, M; Kappelle, M; University of Amsterdam, Amsterdam (Países Bajos). Dept. of Palynology and Paleo; Universidad Nacional, Heredia (Costa Rica).
Publisher: Amsterdam (Países Bajos) 1995Description: p. 109-128.Other Title: Changes in woody species richness along an altitudinal gradient in Talamancan montane Quercus forests, Costa Rica; Ecology of mature and recovering Talamancan Montane Quercus forests, Costa Rica.Subject(s): QUERCUS | ALTITUD | BIODIVERSIDAD | COMPOSICION BOTANICA | COSTA RICA | QUERCUS | ALTITUDE | BIODIVERSITY | BOTANICAL COMPOSITION | COSTA RICA | QUERCUS | ALTITUDE | BIODIVERSITE | COMPOSITION BOTANIQUE | COSTA RICASummary: In order to understand changes in woody species richness along an altitudinal gradient in Talamancan montane Quercus forests (Costa Rica) we conducted a general floristic inventory as well as a detailed altitudinal transect analysis. Woody species richness was compared for forests at 2000 and 2300 m (lower montane) and 2600, 2900 and 3200 m (upper montane). In total we recorded 477 woody species (92 percent dicots) in 223 genera and 90 families. Best-represented families were Rubiaceae, Lauraceae, Melastomataceae and Myrsinaceae in lower montane forests, and Ericaceae, Rosaceae, Poaceae and Asteraceae in upper montane forests. Species-rich genera were Chusquea (16 spp.), Miconia (13), Ocotea (12), Palicourea (10), Oreopanax (9), Piper (9) Rubus (9) and Solanum (9). Numbers of woody species decline continuously with increasing altitude. A comparison between Talamancan montane Quercus forests and montane forests of the northern Andes shows the great phytogeographical affinity between both neotropical montane forest regions.
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5 ilus. 4 tab. Bib. p. 125-127. Sum. (En). Publicado también en Memoirs of the New York Botanical Garden (In press)

Tesis (Ph D)

In order to understand changes in woody species richness along an altitudinal gradient in Talamancan montane Quercus forests (Costa Rica) we conducted a general floristic inventory as well as a detailed altitudinal transect analysis. Woody species richness was compared for forests at 2000 and 2300 m (lower montane) and 2600, 2900 and 3200 m (upper montane). In total we recorded 477 woody species (92 percent dicots) in 223 genera and 90 families. Best-represented families were Rubiaceae, Lauraceae, Melastomataceae and Myrsinaceae in lower montane forests, and Ericaceae, Rosaceae, Poaceae and Asteraceae in upper montane forests. Species-rich genera were Chusquea (16 spp.), Miconia (13), Ocotea (12), Palicourea (10), Oreopanax (9), Piper (9) Rubus (9) and Solanum (9). Numbers of woody species decline continuously with increasing altitude. A comparison between Talamancan montane Quercus forests and montane forests of the northern Andes shows the great phytogeographical affinity between both neotropical montane forest regions.

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