Estructura de macroinvertebrados acuáticos y su relación con diferentes coberturas ribereñas en el rio Baba de la microcuenca del río Quevedo
Due to the different anthropogenic activities that were carried out on the banks of the Baba river, they caused direct changes in the conditions of the habitat, the drastic loss in the variability of the richness and abundance of the populations of aquatic macroinvertebrates. The project was carried...
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| Format: | bachelorThesis |
| Language: | spa |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://repositorio.uteq.edu.ec/handle/43000/6601 |
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Add Tag | Summary: | Due to the different anthropogenic activities that were carried out on the banks of the Baba river, they caused direct changes in the conditions of the habitat, the drastic loss in the variability of the richness and abundance of the populations of aquatic macroinvertebrates. The project was carried out through diagnostic and operational research, with the identification of benthic macroinvertebrates in the Baba river of the Quevedo river micro-basin, the quality indices, Shannon-Wiener, Simpson (ISD), BMWP-CR, Index of Quality of the Ribera Forest (QBR) and River Index (IHF). The samples were taken during the months of June, July and August 2021, 3 sections were used in each land use (grassland, agricultural, mine, forest and urban). The statistical software PAST version 4.0 was used for the diversity indices with the taxonomic composition table. These results were used to obtain ANOVA analysis of variance with a significance range of 95% (p <0.05). A total of 9 orders and 26 genera were collected, resulting in 2279 individuals of aquatic macroinvertebrates collected in the study period. Where the order with the greatest predominance stood out: EPHEMEROPTERA of the genus Beotedoes. The use of agricultural land by means of the BMWP-Cr Biotic Index is found to be water of poor quality, highly polluted and the second group made up of the other land uses located at a level of very poor water quality, extremely polluted. It was observed through the fluvial index with the highest value corresponding to the 2nd section, use of forest land with a value of 70 obtaining high diversity. While for QBR the use of urban and grassland land maintained poor quality with ranges of equal to or less than 25, due to human settlements near the rivers. The diversity and dominance indices, Shannon, Simpson, Margalef showed that there was no statistically significant difference in land uses. With the cluster analysis it can be denoted that the uses of agricultural land and forest share a small similarity between their communities, the similarity was given by the presence and dominance of the genera Baetodes, Choropterpes and Epigompus respectively. Diversity Indices, BMWP-CR, Physicochemical Parameters, QBR, IHF |
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