Análisis de calidad de agua de la quebrada La Ayurá con base en variables fisicoquímicas y macroinvertebrados acuáticos
Loading...
Date
2009
Journal Title
Journal ISSN
Volume Title
Publisher
Área Metropolitana del Valle de Aburrá
Corporación Universitaria Lasallista
Corporación Universitaria Lasallista
Abstract
Introduction. The analysis of physical and chemical variables and the use of macro
invertebrates as witnesses of the quality of water are complementary methods in the evaluation
processes for environmental conditions. The reason for the use of these micro organisms as
indicators is based mainly on their life cycles, which are longer than those of other aquatic
inferior organisms. Besides, macro invertebrates present lower mobility levels. The idea is,
by the use of the physical and chemical variables, the aquatic macro invertebrates and quality
indexes, to prevent the contamination of water, with cleaner production strategies that reduce
environmental negative impacts.
Objective. To determine the quality of water from the Ayurá creek, by the analysis of physical
and chemical variables and the community of aquatic macro invertebrates.
Materials ad methods. In November 2007 and January and February 2008, samples were
taken from three stations located in the high, medium and low parts of the creek. In each
station the physical/chemical variables were measured, and samples of macro invertebrates
were taken with the Surber net.
Results. A total number of 1655 organisms, distributed in 59 taxa, were counted. From them,
the most abundant were Leptonema, Haplotaxida and Baetodes. The space behavior of electric
conductivity, turbidity, total alkalinity and solids dissolved keeps a close relation with the ecophysiological
characteristics of aquatic macro invertebrates.
Conclusion. In station 1there was a good quality of the water and in stations 2 and 3 that
quality was considered between good and medium. The highest deterioration took place in
station 3, as a consequence of the pouring of external waste water into the creek and the
presence of solid wastes near the sampling stations.
Description
Keywords
Calidad del agua, Macroinvertebrados acuáticos, Variables fisicoquímicas, Corporación Universitaria Lasallista, Área Metropolitana del Valle de Aburrá, Índices de diversidad