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Santos SM, Oliveira AT, Aride PHR, Liebl ARS, Mendonça FP, Zuanon J, Pantoja-Lima J. Environmental and ichthyofaunistic characteristics of Amazonian streams with and without fish farm. BRAZ J BIOL 2023; 83:e272623. [PMID: 38018522 DOI: 10.1590/1519-6984.272623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 09/11/2023] [Indexed: 11/30/2023] Open
Abstract
The environmental impacts caused by fish farming can lead to changes in aquatic ecosystems, especially in fish communities. In this study, we investigated possible changes in water quality, in the number of species and individuals of the same species caused by the construction of fish nurseries in dammed Amazonian streams. For this purpose, four streams located in the municipalities of Novo Airão and Presidente Figueiredo were selected. Samples were collected in streams without fish farming and in streams with stretches used for fish farming, where collections took place both downstream and upstream. The fish were captured, identified, quantified and the water was collected for physical and chemical analyses, in addition to the environmental characterization that was carried out. Comparisons were made using fish richness and abundance indices between the sampled points and correspondence analysis of the species identified at the collection sites, using the Mantel test and principal component analysis (PCA) for the environmental characteristics of the water and variables physical and chemical, and permutational multivariate analysis of variance (PERMANOVA) to verify the possible effects of species composition on the sampled conditions and on the analyzed environmental variables. In total, 2,302 fish belonging to 53 species, 15 families and six orders were found. We conclude that the Amazonian streams dammed for fish farming, under the analyzed conditions, can be characterized as environments with different and specific levels of richness and abundance, however, the data set analyzed in this study did not show that these characteristics are directly related to productive activity. We recommend that further studies be carried out following the current research.
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Affiliation(s)
- S M Santos
- Instituto Federal de Educação, Ciência e Tecnologia do Amazonas - IFAM, Campus Manaus Zona Leste, Manaus, AM, Brasil
| | - A T Oliveira
- Instituto Federal de Educação, Ciência e Tecnologia do Amazonas - IFAM, Campus Manaus Zona Leste, Manaus, AM, Brasil
| | - P H R Aride
- Instituto Federal de Educação, Ciência e Tecnologia do Amazonas - IFAM, Campus Manaus Centro, Manaus, AM, Brasil
| | - A R S Liebl
- Instituto Federal de Educação, Ciência e Tecnologia do Amazonas - IFAM, Campus Manaus Centro, Manaus, AM, Brasil
| | - F P Mendonça
- Instituto Federal de Educação, Ciência e Tecnologia do Amazonas - IFAM, Campus Presidente Figueiredo, Presidente Figueiredo, AM, Brasil
| | - J Zuanon
- Instituto Nacional de Pesquisas da Amazônia - INPA, Manaus, AM, Brasil
| | - J Pantoja-Lima
- Instituto Federal de Educação, Ciência e Tecnologia do Amazonas - IFAM, Campus Presidente Figueiredo, Presidente Figueiredo, AM, Brasil
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Miiller NOR, Cunico AM, Gubiani ÉA, Piana PA. Functional responses of stream fish communities to rural and urban land uses. NEOTROPICAL ICHTHYOLOGY 2021. [DOI: 10.1590/1982-0224-2020-0134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract We tested the effects of ruralization and urbanization on the functional diversity indices and the composition of functional traits of Neotropical stream fish communities. The study was carried out in 24 streams of the Pirapó, Piquiri, Paraná III and Iguassu river basins. Land use in the watershed was categorized as percentages of native vegetation, rural occupation and urban occupation. Statistical tests revealed negative bivariate correlations between functional dispersion and the proportion of native vegetation in the watershed. The results indicate that a higher percentage of rural or urban occupation is associated with increased functional dispersion. In the analyzes of trait composition, significant alterations were observed in response to urbanization while only the increase in herbivory responded to ruralization. As the area of native vegetation is reduced by urbanization, the trait composition changes, with reduced proportions of species with intolerance to hypoxia, migratory reproductive behavior, external fertilization, and subterminal mouth, and increased proportions of species with parental care, detritivory, internal fertilization, and an upper mouth. Therefore, fish species that have these specific characteristics are more likely to disappear from streams as urbanization progresses. In summary, urbanization was related to a greater change in the composition of functional traits than ruralization.
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Affiliation(s)
| | - Almir Manoel Cunico
- Universidade Federal do Paraná, Brazil; Universidade Estadual do Oeste do Paraná, Brazil
| | - Éder André Gubiani
- Universidade Estadual do Oeste do Paraná, Brazil; Universidade Estadual do Oeste do Paraná, Brazil
| | - Pitágoras Augusto Piana
- Universidade Estadual do Oeste do Paraná, Brazil; Universidade Estadual do Oeste do Paraná, Brazil
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