2010
DOI: 10.1590/s1679-62252010000100019
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Abstract: The structure and composition of a fish community in a tributary stream of the Aquidauana River, located in the plateau region of the Paraguay River basin, central west Brazil are described, with special attention to the differential effects of the phytophysiognomies of the Cerrado (a tropical savanna), which are predominant in riparian zones all along their longitudinal gradient. A total of 1,166 individuals belonging to 44 species were captured. Similarity analyses of composition and abundance showed two gro… Show more

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Cited by 17 publications
(10 citation statements)
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“…Species addition seems to prevail in less abrupt transitions of streams gradient (Ferreira and Petrere Jr. 2009), but segments more distant from the headwaters often present a more complex habitat, suggesting a higher number of species able variably to interact with the environment (Silva et al 2013). The opposite situation observed in Tenente and Centenário streams may be strongly associated with local environmental characteristics (Mazzoni et al 2006;Teresa and Romero 2010) and can be attributed to the degree of environmental degradation along the whole reach but concentrated in the upper portion. The studied streams have been disrupted by extensive agricultural activities (especially sugar cane agriculture), pastures, dumping of domestic and industrial effluents, and riparian deforestation.…”
Section: Discussionmentioning
confidence: 99%
“…Species addition seems to prevail in less abrupt transitions of streams gradient (Ferreira and Petrere Jr. 2009), but segments more distant from the headwaters often present a more complex habitat, suggesting a higher number of species able variably to interact with the environment (Silva et al 2013). The opposite situation observed in Tenente and Centenário streams may be strongly associated with local environmental characteristics (Mazzoni et al 2006;Teresa and Romero 2010) and can be attributed to the degree of environmental degradation along the whole reach but concentrated in the upper portion. The studied streams have been disrupted by extensive agricultural activities (especially sugar cane agriculture), pastures, dumping of domestic and industrial effluents, and riparian deforestation.…”
Section: Discussionmentioning
confidence: 99%
“…This vegetation is composed mainly of exotic grasses (Brachiaria spp.) that tend to invade stream banks of deforested areas ) and may provide substrate for shelter and reproduction (Growns et al 2003;Teresa & Romero 2010). This would favour the occurrence of species usually associated with submerged vegetation, like Crenicichla britskii, Gymnotus carapo, Hoplias malabaricus and Hysonotus francirochai.…”
Section: Discussionmentioning
confidence: 99%
“…Just occasionally these species serve as nuclear and, in the case of Brycon, only in the unaltered site, which can be explained by the low abundance of macrophytes in disturbed locations. Jupiaba acanthogaster, the dominant species acting as follower has its occurrence associated specially to headwaters streams (Teresa & Romero, 2010) and is the most common species in the córrego Olho d'Água. According to Willink et al (2000), this species exhibits a large phenotypic plasticity, with the ability to occupy different habitats.…”
Section: Discussionmentioning
confidence: 99%