Impacts of dam construction on the macroinvertebrate community in the Poxin-Açú, in a tropical region

  • Anderson Nascimento do Vasco Departamento de Agroecologia. Instituto Federal de Educação, Ciência e Tecnologia de Sergipe (IFS), Rodovia BR 101, Km 96, s/n, CEP: 49100-000, São Cristóvão, SE, Brazil.
  • Amanda Vaz de Souza Oliveira Departamento de Agroecologia. Instituto Federal de Educação, Ciência e Tecnologia de Sergipe (IFS), Rodovia BR 101, Km 96, s/n, CEP: 49100-000, São Cristóvão, SE, Brazil.
  • Geovane Alves Feitosa Departamento de Agroecologia. Instituto Federal de Educação, Ciência e Tecnologia de Sergipe (IFS), Rodovia BR 101, Km 96, s/n, CEP: 49100-000, São Cristóvão, SE, Brazil.
  • Talita Guimarães Araújo-Piovezan Departamento de Biologia. Instituto Federal de Educação, Ciência e Tecnologia de Sergipe (IFS), Rodovia BR 101, Km 96, s/n, CEP: 49100-000, São Cristóvão, SE, Brazil.
  • Agripino Emanuel Oliveira Alves Departamento de Agroecologia. Instituto Federal de Educação, Ciência e Tecnologia de Sergipe (IFS), Rodovia BR 101, Km 96, s/n, CEP: 49100-000, São Cristóvão, SE, Brazil.
  • José Oliveira Dantas Departamento de Biologia. Instituto Federal de Educação, Ciência e Tecnologia de Sergipe (IFS), Rodovia BR 101, Km 96, s/n, CEP: 49100-000, São Cristóvão, SE, Brazil.
DOI: https://doi.org/10.4136/ambi-agua.2704

Abstract

River regularization plays an important role in socio economic development. However, it also modifies the natural flow system of the river and its biotic and abiotic characteristics, causing significant impacts on rivers. To evaluate the impacts on the macroinvertebrate community caused by dam construction on the Poxim-Açú River, metrics of composition and community structure of the macroinvertebrates were analyzed, as well as ecological and biological traits of the region. Macroinvertebrates were collected at three sites located downstream the dam, before (2013) and after (2015) dam construction. The water quality was classified as “good” to “excellent” according to the biotics indices. The alterations of the flow regime of the river after the dam construction influenced the macroinvertebrate communities, modifying their diversity, equitability, richness, and the number of individuals.

Keywords: bioindicators, dam impacts, environmental monitoring.


Published
22/11/2021
Issue
Vol. 16 No. 6 (2021)
Section
Papers

Authors maintain the copyrights for their work. However, they grant rights of first publication to Ambiente e Agua - An Interdisciplinary Journal of Applied Science. In compensation, the journal can transfer the copyrights, allowing non-commercial use of the article including the right of sending the article to other data bases or publication media. The journal uses the CC BY 4.0 license"