Active deformation in the Bolivian Andes, South America

Active dispersal by wild Triatoma infestans in the Bolivian Andes.

Triatoma infestans is the main vector of Chagas disease and target of control programmes in the Southern Cone countries. So far Bolivia is the only country where true T. infestans wild foci are documented. The dispersal ability for wild T. infestans was studied at microgeographical scale in Bolivian Andes, to assess the possibility for wild populations to actively recolonize insecticide-treated...

Late Cenozoic uplift of the Eastern Cordillera, Bolivian Andes

This paper analyses Late Cenozoic uplift in the Bolivian Andes, using the morphology of well preserved regional paleosurfaces in the Eastern Cordillera that define three axially draining braided river catchments that formed between ∼12 and ∼9 Ma. Rock uplift since the formation of the paleodrainage systems, which has been quantified using four different methods, is 1705±695 m, with a mean erosi...

Pulmonary endocrine cells of Aymara Indians from the Bolivian Andes.

INTRODUCTION There is evidence to suggest that life at high altitude causes changes in the population of pulmonary endocrine cells, possibly because of exposure to chronic hypoxia. A study was made of the populations of pulmonary endocrine cells in three Aymara Indians and three Mestizos of La Paz (3600 m), Bolivia, which were compared with those in four white lowlanders. METHODS Pulmonary en...

Assessment of 21 Century Climate Change Projections in Tropical South America and the Tropical Andes

A modern pollen rain study from the central Andes region of South America

In order for palynologists to reconstruct past environments accurately with fossil pollen evidence, it is necessary to first understand how the current vegetation is represented in the modern pollen rain of the study area (Webb et al., 1987, 1993). In the central Andes region of South America, however, no comprehensive study of this nature exists to date. Of the dozen or so fossil pollen studie...