Simplified fish larval supply in coastal areas after a dam burst in Brazil.

Autor: Barrilli GHC; Marine Ecology and Conservation Laboratory., Centre for Environmental Science, Universidade Federal do Sul da Bahia, Campus Sosígenes Costa, Rodovia BR 367 km 10, 45810-000 Porto Seguro, Bahia, Brazil. Electronic address: germanohcb@gmail.com., Tatsumi S; Hokkaido Research Center, Forestry and Forest Products Research Institute, Sapporo, Hokkaido, Japan., De Biasi JB; Marine Ecology and Conservation Laboratory., Centre for Environmental Science, Universidade Federal do Sul da Bahia, Campus Sosígenes Costa, Rodovia BR 367 km 10, 45810-000 Porto Seguro, Bahia, Brazil., Cruz ARS; Marine Ecology and Conservation Laboratory., Centre for Environmental Science, Universidade Federal do Sul da Bahia, Campus Sosígenes Costa, Rodovia BR 367 km 10, 45810-000 Porto Seguro, Bahia, Brazil; Programa de Pós-Graduação em Sistemas Aquáticos Tropicais, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, km 16. Ilhéus - BA, Brazil., de Oliveira TCT; Marine Ecology and Conservation Laboratory., Centre for Environmental Science, Universidade Federal do Sul da Bahia, Campus Sosígenes Costa, Rodovia BR 367 km 10, 45810-000 Porto Seguro, Bahia, Brazil; Programa de Pós-Graduação em Ecologia e Conservação da Biodiversidade, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, km 16. Ilhéus - BA, Brazil., Hostim-Silva M; Laboratório de Ecologia de Peixes Marinhos (LEPMAR), Department of Agricultural and Biological Sciences, Federal University of Espírito Santo (UFES/CEUNES), Brazil., Hackradt CW; Marine Ecology and Conservation Laboratory., Centre for Environmental Science, Universidade Federal do Sul da Bahia, Campus Sosígenes Costa, Rodovia BR 367 km 10, 45810-000 Porto Seguro, Bahia, Brazil., Félix-Hackradt FC; Marine Ecology and Conservation Laboratory., Centre for Environmental Science, Universidade Federal do Sul da Bahia, Campus Sosígenes Costa, Rodovia BR 367 km 10, 45810-000 Porto Seguro, Bahia, Brazil.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2024 Aug; Vol. 205, pp. 116615. Date of Electronic Publication: 2024 Jun 24.
DOI: 10.1016/j.marpolbul.2024.116615
Abstrakt: Coastal and estuarine systems play an important role in the maintenance of marine biodiversity, providing nursery, feeding, developmental and reproductive areas for terrestrial and aquatic species. The Fundão dam collapse is considered one of the biggest environmental disasters in Brazil, causing great social, economic and ecological damage in the affected areas. In our study, we used beta diversity and its components as a tool to monitor the spatio-temporal variation of fish larvae in four marine areas adjacent to the Doce River. The results show that the four areas undergo different spatio-temporal dynamics, with the composition of fish larvae in the Doce being simplified in the last years after the dam burst, compared to the other adjacent marine areas. In addition, turbidity is an important factor that has caused the homogenization of the larval composition of the Doce, demonstrating that mud resuspension events can cause a decrease in diversity and also suggesting the toxicity of the mud composition. The change from negative to positive additive and colonizing components in recent years suggests a slight recovery of diversity in the Doce compared to other marine areas. Finally, we have shown that some species may be tolerant to the impact, but with probable behavioral, energetic and physiological costs, which justifies the constant monitoring of these areas.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. Germano Henrique Costa Barrilli reports financial support was provided by Espírito Santo Technology Foundation. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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