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- W2591916109 abstract "Abstract: Aim: As part of the remodeling of an almost century-old dam, in the Rio Jacaré-Guaçu, the dredging and management of macrophytes were carried out in the Gavião Peixoto Reservoir (São Paulo State, Brazil). Data for the reservoir and a river stretch upstream the reservoir were compared, for evaluating the effects of the management procedures. Methods The fish fauna and physical and chemical factors were studied during five years, before (2005-2006) and after the recovery procedures (2007-2009), once a year, during the rainy season. Fishes were caught by gill nets, 10 m long and 1.5, 4, and 6 cm-mesh between adjacent knots. Results After the management procedures, the values of pH and dissolved oxygen increased in the reservoir, whereas conductivity decreased, bringing them closer to those of the upstream stretch. Species richness, diversity, and Catch per Unit Effort in number and biomass, increased in the reservoir after the management. Conclusions After the recovery procedures, the composition of the fish fauna in the reservoir was similar to that of the upstream stretch. The dredging and management of macrophytes in the reservoir benefited the fish fauna diversity, through improvement in water quality and space expansion." @default.
- W2591916109 created "2017-03-16" @default.
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- W2591916109 date "2017-01-01" @default.
- W2591916109 modified "2023-10-16" @default.
- W2591916109 title "Effects of dredging and macrophyte management on the fish species composition in an old Neotropical reservoir" @default.
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- W2591916109 doi "https://doi.org/10.1590/s2179-975x3415" @default.
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