Quartäre Klima- und Landschaftsveränderungen in Südamerika

Changements paysagiques et climatiques quaternaires en Amérique du Sud

Paläo-Klimaforschung

Recherche sur les paléo-climats

Auteur :
VEIT, H.

Description :
From a long term perspective, South America´s different landscapes, climate- and vegetation zones are no stable features. In the Andes as well as in the large sediment basins environmental changes of the past are well documented in geomorphological features and in sediments. Neither the rain forests in Amazonia nor the salars and lakes on the tropical-subtropical altiplano looked in the past 10.000 to 20.000 years, even less in the past 1 or 2 million years, as they look today. In course of global climate changes (such as ice ages) the rain forests shrank, savannahs expanded and deserts existed where dense vegetation dominates today. Or big lake sand long glaciers existed in today´s desert like central Andean valleys. Apart from temperature changes, variations in humidity played an important role in the past. - (IfL)


Type de document :
Article de monographie

Source :
Geographische Rundschau, issn : 0016-7460, 2007, vol. 59, n°. 4, p. 4-10, nombre de pages : 7, Références bibliographiques : 45 ref.

Date :
2007

Editeur :
Pays édition : Allemagne, Braunschweig, Westermann