Sensitivity of Elmidae (Insecta: Coleoptera) to habitat disturbance and physicochemical water quality in lotic environments of the Colombian Andes
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| Autores: | , , , , |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2020 |
| Descripción: | Introduction: Riffle beetles are aquatic organisms frequently associated with well-oxygenated clean running water; however, some genera of Elmidae can also be found in moderately polluted streams proving their tolerance to certain degree of habitat degradation. Objective: In order to determine the contamination sensitivity and tolerance of each genus and the main factors that influence the presence and composition of Elmidae in Colombia, Methods: 60 locations between 450 and 4000 masl were sampled in six localities of Colombia, mainly in the Andean Region. Collection was carried out with D and Surber nets. Physico-chemical, bacteriological and environmental quality information was recorded. With these data, Canonycal Correspondence Analysis and descriptions of occurrence intervals for each genus were made. Results: Twenty-two genera were found in the streams evaluated; which represents 85% of known national richness. The most important factors influencing the presence and composition of Elmidae were oxygen saturation, sediment deposition, suspended solids, epifaunal substrate availability and geographic location. Conclusions: Results are useful for classifying elmids according to their sensibility to changes in environmental conditions and habitat degradation, which is a first step to incorporate Elmidae in water quality biotic indexes. |
| 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/36702 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/36702 |
| Palabra clave: | Riffle beetles Lotic Dissolved oxygen Freshwater quality Pollution Escarabajos acuáticos Lótico Oxígeno disuelto Calidad de agua Contaminación |