Epilithic diatoms associated with the water quality of the Illuchi River, Latacunga, Ecuador
DOI:
https://doi.org/10.46380/rias.vol5.e158Keywords:
bioindicators, trophic index of water quality, water pollution, water quality indexAbstract
The quality of the water in the Cotopaxi province has been the object of analysis due to the usefulness of this resource for the population, which serves as a reference point for the detection of contamination levels in the Illuchi River. The objective of the study was to determine the water quality index through physical, chemical and microbiological parameters. In the first two, abiotic variables were taken into account; while in the third, biotic variables were worked on, specifically the taxonomic identification of diatoms present in aquatic systems. Three sampling points were taken: Laguna Salayambo (P1), Hacienda Noelanda (P2) and Barrio Saragosín (P3), identifying 31 species of epilithic diatoms along the river. The calculation of the water quality index yielded values ??for point 1 of 70.18, whose qualification is regular and of oligotrophic type, point 2 a value of 52.2, its regular state of type ?-mesotrophic and point 3 of 46.87 with a poor quality ?-mesotrophic type. It was concluded that there is a relationship between diatoms and water quality; In addition, the increase in contamination due to agriculture, livestock and human settlements was evidenced.
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Copyright (c) 2022 Manuel Patricio Clavijo Cevallos, Diana Gallegos, Cinthia Vilela Muñoz
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