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Revista U.D.C.A Actualidad & Divulgación Científica
Article . 2016 . Peer-reviewed
License: CC BY NC
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Grupos funcionales alimenticios de macroinvertebrados acuáticos en un arroyo tropical (Colombia)

Functional feeding groups of aquatic macroinvertebrates in a tropical stream (Colombia)
Authors: Motta Díaz, Ángela; Ortega Corredor, Laura; Niño Fernández, Yeina; Aranguren Riaño, Nelson;

Grupos funcionales alimenticios de macroinvertebrados acuáticos en un arroyo tropical (Colombia)

Abstract

Los macroinvertebrados son un importante componente biológico de los ríos, ya que están vinculados, activamente, en el flujo de materia y energía. El objetivo del estudio fue determinar la estructura y los grupos funcionales alimenticios de los macroinvertebrados, en la quebrada La Chapa (Departamento de Boyacá). En tres tramos de la quebrada, en las épocas de lluvia y sequía, se midieron características físicas y químicas. Mediante red Surber, se obtuvieron muestras en cada tramo, para estimar la abundancia y la biomasa de macroinvertebrados. La asignación de los grupos funcionales alimenticios por taxón, se hizo a partir de fuentes secundarias. En el análisis de componentes principales, las variables físicas y químicas se ordenaron según la temporalidad; la conductividad eléctrica, la dureza y la alcalinidad fueron las variables con mayor peso en el análisis. Respecto a los macroinvertebrados, se hallaron 35 taxones, con mayor riqueza en efemerópteros y dípteros, con 8 y 7 taxones, respectivamente. En época de lluvias predominaron, en abundancia, los organismos colectores-recolectores y colectoresfiltradores, como Thraulodes sp. y Simulium sp., mientras que en época seca fueron los raspadores, como Helycopsyche sp. En cuanto a la biomasa, en la época de lluvia predominaron los perforadores-carnívoros, como Limnocoris sp., mientras en la época seca fueron los raspadores, como Hydrobiidae. La variación temporal en los grupos funcionales, se puede asociar con los cambios en las condiciones del hábitat, determinados por la expresión diferencial del caudal. Se confirma que los cambios temporales asociados a la estacionalidad climática e hidráulica son importantes en la estructuración de la comunidad de macroinvertebrados, en los sistemas loticos andinos.

Keywords

Medicine (General), Macroinvertebrates, QH301-705.5, Agriculture (General), Andes, estructura trófica, S1-972, R5-920, trophic structure, ríos de cabecera, headstreams, Biology (General), Macroinvertebrados

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
5
Top 10%
Average
Average
Green
gold