Influencia de la ganadería en los macroinvertebrados acuáticos en microcuencas de los Andes centrales de Colombia. Cattle raising influence over the aquatic macroinvertebrates in microbasins of central Andes, Colombia.
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| Autor: | |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2018 |
| Descripción: | . In Colombia, livestock activity is of great importance for the rural economy and the country’s foodsupply. In order to measure the impact of cattle raising and riparian corridors on the composition and diversityof benthic macroinvertebrates in Andean microbasins, nine headwater streams were selected in the municipalityof Villamaría (Caldas, Colombia), five of them with riparian corridors and four without protection. During July2013, macroinvertebrate samples were collected using D-net and Surber nets, and each streams was characterized according to water quality, channel metrics and habitat quality score. In total 98 934 individuals werecollected, distributed in nine classes, 17 orders, 56 families and 92 genera. Veneroidea was the most abundantorder followed by Trichoptera, Diptera, Tubificida and Ephemeroptera. Coleoptera was the richest order with 28genera, followed by Diptera with 18, Trichoptera with 11, Ephemeroptera with 10 and Odonata with 8. Streamswith riparian corridors were deeper, had higher proportion of coarse substrates and Habitat Quality Score andpresented higher genus diversity than those unprotected (P < 0.05). The genera Ferrisia, Eurygerris, Heleobiaand Pisidium; total nitrogen, ammonia nitrogen and silt proportion on the streambed were correlated with unprotected streams, whilst the genus Rhagovelia, the subfamily Chironominae, the Habitat Quality Score and theproportion of coarse substrates were correlated with streams with riparian corridors. This information confirmsthat riparian corridors help reducing the negative impact generated by cattle ranching practices and improve theprovision of environmental services, and therefore it is recommended to maintain or restore the strip of riparianvegetation to protect the streams in cattle ranching landscapes. |
| País: | Portal de Revistas UCR |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Lenguaje: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/30316 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/30316 |