Abstract (en):
La Miel River is a tributary of the Magdalena basin and the main tributary of the Amaní reservoir. In order to establish the spatial and temporal dynamics of periphytic algae genera downstream of the reservoir, data collected every two months between 2006 and 2009, at seven sampling sites (five in the main channel and two tributaries) were analyzed. 130 genera and 15 classes were recorded, Cyanophyceae and Bacillariophyceae being the most representative in density and frequency. Both the generic density and richness showed significant variations in the spatial dimension, but did not differentiate the sampling sites on the La Miel River from those in tributaries and did not show a specific pattern related to hydrological seasons; but changes of richness were observed between samples and a association between the algal community and parameters related to water dynamics was found. We conclude that although the variables analyzed are not limited by the discharge, other structural characteristics of the community such as the taxonomic composition and diversity are affected, especially at the site of direct influence of this process.
Abstract (es):
El río La Miel es un tributario de la cuenca del Magdalena (Colombia) y el principal afluente del embalse Amaní. Con el objetivo de establecer la dinámica espacial y temporal de la densidad y riqueza de los géneros algales del ficoperifiton aguas abajo del embalse, se analizaron datos obtenidos cada dos meses entre 2006 y 2009, en siete estaciones (cinco en el cauce principal y dos en ríos afluentes). Se registraron 130 géneros y 15 clases, de las cuales Cyanophyceae y Bacillariophyceae fueron las más representativas en densidad y frecuencia. Tanto la densidad como la riqueza genérica presentaron variaciones significativas en la dimensión espacial, pero no diferenciaron las estaciones de los afluentes sobre el río La Miel y no mostraron un patrón claro de variación relacionado con los periodos hídricos. Sin embargo, se observaron cambios de la riqueza entre muestreos y una clara asociación entre la comunidad y parámetros relacionados con la dinámica hídrica. Se concluye que aunque las variables analizadas no están limitadas por la descarga, otras características estructurales de la comunidad tales como la composición
taxonómica y la diversidad son afectadas, especialmente en el sitio de influencia directa de este proceso.
Keywords:
Algas perifíticas, Hidroeléctrica, Río regulado, Embalses (es)
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How to Cite
López-Muñoz, M. T., & Pérez-Gallego, C. M. (2014). Dinámica espacial y temporal de los géneros ficoperifíticos del río La Miel (cuenca del río Magdalena), aguas abajo del embalse Amaní (Caldas, Colombia), entre 2006 y 2009. Biota Colombiana, 15(2). Retrieved from https://revistas.humboldt.org.co/index.php/biota/article/view/325
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