Abstract

AGUIRRE RAMIREZ, Néstor Jaime; PALACIO BAENA, Jaime  and  RAMIREZ RESTREPO, John Jairo. CARACTERÍSTICAS LIMNOLÓGICAS DEL EMBALSE EL PEÑOL-GUATAPÉ, COLOMBIA. Rev. ing. univ. Medellin [online]. 2007, vol.6, n.10, pp.53-66. ISSN 1692-3324.

Between July of 1992 and August of 1993 and with the purpose of studying the hydrologic characteristics of two water columns in the Peñol-Guatapé Reservoir, monthly sampling in the reservoir's tail were carried out and in open water (Isla del sol). In each station and at five depths, some physical and chemical variables were analyzed; and in the fotic zone, the phytoplankton community was studied, excluding the Diatomophyceae group. Thermal and chemical gradients were found in the two stations and from the hydro-biological point of view, the quality of water was oligomesotrofic. The primary production was low during the entire period of sampling, and just as the other variables, it was deeply influenced by the variation in the reservoir levels at the time of study.

Keywords : Reservoir; Thermal-chemical gradient; chlorophyll 'a'; primary production; Microcystis aeruginosa; Botryococcus baunii; water quality.

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