Landscape changes and hydrologic alterations associated with dam construction have greatly hindered reproductive success and the recruitment of migratory species. However, little is known about the flow conditions that are necessary for the reproductive success of migrators. We aimed to analyze one of the important migrants of the Paraná River, the curimba, Prochilodus lineatus (Valenciennes, 1836), to determin...
Made available in DSpace on 2018-11-26T17:06:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-01-01. Added 1 bitstream(s) on 2019-10-09T18:26:13Z : No. of bitstreams: 1 S1676-06032016000300203.pdf: 775070 bytes, checksum: d809c7771e8ef16729583e5aa9f1de7d (MD5); The drainages of the Iguacu River basin, as well as the main channel of the river, have peculiar characteristics resulting from geomorphologica...
This study aimed to evaluate the formation of longitudinal and vertical gradients (zonation) of fish fauna and limnological variables, as well as assess the variability of abundance and interrelation of fish species from the Salto Osório (run-of-river) and Salto Santiago (water storage) reservoirs, both positioned in the central region of the Iguaçu River reservoirs cascade. For this, samples were taken monthly...
This is a study with temporal approach on the community of periphytic algae in the upper Paraná riverfloodplain, inserted in the Long-Term Ecological Research/CNPq, site 6. We sought to evaluate the community structure of periphytic algae, analyze the influence of abiotic factors on this structuring, and determine a model for the density of the phycoperiphyton community in 11 years of study. Samples were taken ...
O rio Iguaçu nasce na confluência dos rios Atuba e Irai, e desemboca no rio Paraná, em Foz do Iguaçu. A ictiofauna deste rio, desde os primeiros trabalhos realizados, sempre foi considerada pobre e de pequeno porte, entretanto, apresenta um elevado grau de endemismo favorecido pelo surgimento das Cataratas do Iguaçu, que exerceram um papel fundamental neste processo. Esta obra busca uma fonte aglutinadora, mas ...
This study aimed to evaluate the performance of the Butter Head/Boston lettuce culture, irrigated with fresh water (T1), wastewater from fish breeding (T2), wastewater from a stabilization pond of pig excrement (T3) and wastewater from a pond of seaweed culture fed with biodigestor residue (T4). The Tukey test was applied and it was observed that the plant dimensions of height, diameter of the head, length of t...
The objective of this work was to analyze the spatial and temporal distribution, to establish the relationship between weight and length, to analyze the reproductive development and to determine the length distribution from Steindachnerina insculpta, this specie is very important in the river for prey fishes. The fishes were obtained in 6 collections, from October 2002 to September 2003, in 3 sampling stations ...
The composition and structure of fish community can be considered ecological and environmental indicators. The present study aimed to survey information about the specific composition and abundance of the ichthyofauna from Padres’ River. Quarterly samplings were accomplished by the method of the electrofishing in two sample sites, one close to the headwater and another in the proximities of the mouth. The colle...