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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Fluvial lateral environments in Río de La Plata basin: effects of hydropower damming and eutrophication

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Author(s):
José Roberto Debastiani Júnior ; Danilo Augusto de Oliveira Naliato ; Gilmar Perbiche-Neves ; Marcos Gomes Nogueira
Total Authors: 4
Document type: Journal article
Source: Acta Limnol. Bras.; v. 28, p. -, 2016.
Abstract

Abstract Aim: Identify large-scale limnological patterns in lateral water bodies of Río de La Plata Basin, considering the influence of river damming and urban conglomerates. Methods Samplings were performed in a broad spatial scale (along 16 latitude degrees) during two seasonal periods (23 sites in summer and 20 sites in winter) for measurements of physical and chemical variables, chlorophyll a and periphyton biomass. Results Geographical distance between sites was significantly correlated with the environmental dissimilarity (Euclidean distance). Reservoir and floodplain associated sites exhibited lower phosphorus concentration. Eutrophic conditions were higher in sites close to urban areas and regions with intensive agriculture and livestock activities, which exhibited higher conductivity, concentration of nitrogen and chlorophyll a. Sites associated to reservoirs had higher periphyton biomass. Inorganic suspended matter was higher in summer whereas organic suspended matter was higher in the winter, due to contrasting rain seasonality in the upper Paraná River sub-basin. No significant correlation between the dissimilarity of the vegetation and the environmental dissimilarity or geographical distance between sites was observed. Conclusions The limnological conditions in the fluvial lateral habitats in the Río de La Plata basin are highly influenced by reservoirs construction, intensive urban occupation and rain seasonality. (AU)

FAPESP's process: 11/18358-3 - Copepoda Cyclopoida (Crustacea) associate with macrophytes in ''la Plata'' river basin (Argentina, Bolivia, Brazil, Paraguay and Uruguay): a taxonomic and molecular approach
Grantee:Gilmar Perbiche Neves
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 09/00014-6 - Limnological studies of large reservoirs of the River de la Plata Basin (Brazil, Argentine, Paraguay and Uruguay): a spatial geographical approach and the influence of present and historical processes
Grantee:Marcos Gomes Nogueira
Support type: Regular Research Grants
FAPESP's process: 09/11781-8 - The importance of the wetlands associated to reservoirs in the Rio de La Plata Basin (Argentina, Brazil, Paraguay and Uruguay) to the Cladocera fauna diversity
Grantee:Jose Roberto Debastiani Júnior
Support type: Scholarships in Brazil - Master
FAPESP's process: 11/23444-6 - Cladoceran (Crustacea, Branchipoda) assemblages diversity from lotic stretches adjacent areas of Rio de la Plata Basin (Argentina, Brazil, Paraguay and Uruguay)
Grantee:Jose Roberto Debastiani Júnior
Support type: Scholarships in Brazil - Doctorate (Direct)