CAMBIOS ESPACIO - TEMPORALES EN LA DIVERSIDAD DE LA COMUNIDAD DE AVES DE LAS LOMAS DE LACHAY LUEGO DEL EVENTO EL NIÑO 97 – 98

Abstract

Spatio - temporal changes in the avian diversity values from Lomas de Lachay, were evaluated in order to identify the development of resilience processes, after the ENSO 97 - 98 perturbation. The avian diversity, showed a post - ENSO process probably in association with the low herbaceous productivity during 1999. Values for 2000 year are similar to those expected for a normal year. Diversity showed an homogeneous spatial distribution during months with ENSO influence. This spatial distribution changed to an heterogeneous one during the dry months of a normal year. Results lead to the conclusion that birds, considering the diversity values and its spatial distribution , develop resilience processes that permit the bird community to show the expected values for a normal year, and a return to the characteristic seasonal changes in this ecosystem. (English) [ABSTRACT FROM AUTHOR]