M. Ceneviva-Bastos

M. Ceneviva-Bastos
Universidade Estadual do Centro-Oeste do Paraná (UNICENTRO) | UNICENTRO · Departamento de Ciências Biológicas

PhD

About

24
Publications
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288
Citations

Publications

Publications (24)
Article
Full-text available
The loss of riparian forests can disrupt the structure and function of lotic ecosystems through increased habitat homogenization and decreased resource diversity. We conducted a field experiment and manipulated structural complexity and basal resource diversity to determine their effect on multiple aspects of community and food-web structure of deg...
Article
Full-text available
Many studies on Neotropical streams have reported seasonal changes in the diet of fish, although studies that evaluate the influence of these temporal differences on the entire web are very scarce. Under the hypothesis that trophic interactions and the food web structure are under seasonal influences, two forested streams (named S1 and S2) were sam...
Article
Full-text available
In this study, we investigated the influence of environmental variables (predictor variables) on the species richness, species diversity, functional diversity, and functional redundancy (response variables) of stream fish assemblages in an agroecosystem that harbor a gradient of degradation. We hypothesized that, despite presenting high richness or...
Article
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Bromeliads are numerous both in diversity and abundance in the Atlantic Rainforest, one of the most threatened biomes on Earth. They are also an important habitat for several animal species that live in the water retained by its rosette structure. In this study, we aimed to characterize and compare the macroinvertebrate community of two bromeliad s...
Article
Full-text available
Habitat homogenization has been a major impact in stream ecosystems, and it is considered one of the main drivers of biotic homogenization as well, leading to the loss of water quality and fish diversity. In this study, we added artificial woody structures and leaf packs in physically impacted streams to test if the additions can improve habitat co...
Article
Full-text available
Resumo: A meta deste estudo foi experimentar novas propostas pedagógicas para que o processo de ensino aprendizagem se desenvolva e se diferencie dentro de uma das piores realidades educacionais brasileiras. As técnicas pedagógicas de Sequencia Didática e da Problematização foram empregadas e a eficiência da combinação destes métodos foi avaliada....
Article
Full-text available
Aim The aim of this study was to describe the diet of stream macroinvertebrates and to determine their trophic groups. Methods Invertebrates were sampled with D nets in three pasture streams. They were identified to genus level and submitted to gut content analysis, except for fluid feeders such as hemipterans, to which diet data was obtained from...
Article
Full-text available
The aquatic communities of headwater streams are highly influenced by the surrounding matrix. The edge effects of forest fragments are known to influence terrestrial communities; however, their influence on aquatic communities remains poorly understood. The aim of this study was to investigate whether and how edge effects can influence stream envir...
Conference Paper
Full-text available
Background/Question/Methods Many streams in deforested regions of southern Brazil have silted channels with reduced structural heterogeneity and grassy banks. Historically, biodiversity in these streams was high, but now is declining. We experimentally investigated whether or not an increase in instream structural heterogeneity supporting more di...
Article
Full-text available
We investigated the reproductive biology of Knodus moenkhausii, an abundant small-sized characin fish with broad occurrence in the Paraná River basin, Brazil. Specimens were collected monthly to determine fecundity, length at first maturity, reproductive period and spawning type. Gonads were macroscopically classified according to their form, size...
Conference Paper
Full-text available
Background / Purpose: In stream ecosystems the removal of riparian vegetation to agricultural land-use has been leading to habitat simplification, which in turn can lead to ecosystem function loss. Since most streams have been degraded due to human activities, restoration has been considered a priority and must take into account the protection of...
Article
Full-text available
AIM: In this study, we evaluated and compared community attributes from a tropical deforested stream, located in a pasture area, in a period before (PRED I) and three times after (POSD I, II, and III) a flash flood, in order to investigate the existence of temporal modifications in community structure that suggests return to conditions previous to...
Article
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We evaluated qualitatively and quantitatively the community structure of aquatic insects (Ephemeroptera, Plecoptera, and Trichoptera) in 19 streams in areas of Cerrado in the Paraguay, Paraná, and São Francisco river basins. The number of genera and taxonomic composition were compared at spatial (at the hydrographic basins level) and conservation l...
Conference Paper
Full-text available
Background/Question/Methods In stream ecosystems the removal of riparian vegetation to agricultural land-use has been leading to habitat simplification, which in turn can lead to ecosystem function loss. Since most streams have been degraded due to human activities, restoration has been considered a priority and must take into account the protecti...
Conference Paper
Background/Question/Methods It has been long since ecology is predominantly descriptive with regards to community structure and dynamics. In recent years, however, many ecologists have conducted studies involving experimental manipulation in order to evidence cause-effect relations from the manipulated variables. The aim of the present study was to...
Article
Full-text available
The habitat use and feeding habits of a set of nektonic fish species often found in small low-gradient streams in Brazil were investigated. The core species in the present study was Knodus moenkhausii (Eigenmann & Kennedy, 1903), the most abundant of five species in the nektonic guild. Records of the species in 22 streams indicate that K. moenkhaus...
Article
Full-text available
Feeding opportunism of Knodus moenkhausii (Teleostei, Characidae): an abundant species in streams of the northwestern in the state of Sao Paulo, Brazil. In the present investigation we studied the feeding biology of Knodus moenkhausii (Eigenmann & Kennedy, 1903) in streams of the Upper Parana river system in the state of Sao Paulo. In eight streams...
Article
Full-text available
Feeding opportunism of Knodus moenkhausii (Teleostei, Characidae): an abundant species in streams of the northwestern in the state of São Paulo, Brazil. In the present investigation we studied the feeding biology of Knodus moenkhausii (Eigenmann & Kennedy, 1903) in streams of the Upper Paraná river system in the state of São Paulo. In eight streams...

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