Ciencia e investigación agraria versión On-line ISSN 0718-1620
Cienc. Inv. Agr. v.36 n.3 Santiago dic. 2009 Cien. Inv. Agr.
36(3):411-424 Species richness, diversity and human activities
in an elevation gradient of a high-ecosystem in Lagunas
Huascoaltinas, Atacama Region, Chile Relación entre
biodiversidad florística e intervención antrópica en un
gradiente altitudinal, de un ecosistema altoandino, "Lagunas
Huascoaltinas", Region de Atacama, Chile Doris Sanhueza, Marcelo
Miranda, Miguel Gómez, and Cristian Bonacic Facultad de
Agronomía e Ingeniería Forestal, Pontificia Universidad Católica
de Chile, Casilla 306-22, Santiago, Chile. Corresponding author:
firstname.lastname@example.org. The relationship between species
richness, diversity and grazing frequency along an altitudinal
gradient (1900-3400 m) of an Andean ecosystem indicates that
there is an intense human pressure on vegetation use. To
identify the vascular flora and its conservation, 20 sites were
sampled in two visits during 2006. We identified 79