A5067543113- Fish biology, ecology, and behavior
- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- Child Nutrition and Water Access
- Bat Biology and Ecology Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Species Distribution and Climate Change
- Aquatic Ecosystems and Biodiversity
- Parasites and Host Interactions
- Avian ecology and behavior
- Hydropower, Displacement, Environmental Impact
- Marine and Offshore Engineering Studies
- Conservation, Biodiversity, and Resource Management
- Evolution and Paleontology Studies
- Fire effects on ecosystems
- Parasite Biology and Host Interactions
- Marine animal studies overview
- Effects of Environmental Stressors on Livestock
- Ecology and Vegetation Dynamics Studies
- Freshwater macroinvertebrate diversity and ecology
- Indigenous Health and Education
- Comparative Literary Analysis and Criticism
Universidade Estadual de Maringá
2015-2024
Universidade do Estado do Rio de Janeiro
2024
Virginia Tech
2021
Coordenação de Aperfeicoamento de Pessoal de Nível Superior
2020-2021
European Union of Medical Specialists
2008
Instituto Adolfo Lutz
1988
Secretaria da Saúde
1988
Abstract The long‐term impact of river regulation on fish functional diversity by a dam immediately upstream from the upper Paraná River floodplain, Brazil, was evaluated. It expected that resulting alterations in natural flow, downstream dam, would negatively species, simplification ichthyofauna. In addition, this effect to be more pronounced directly affected main channel than its tributaries, Baía and Ivinhema rivers. Fish were sampled before (pre) after (post) closure (the intervention)....
The Xingu River, located in northern Brazil, is already under the impacts of one most harmful projects history Amazon – Belo Monte hydroelectric dam. A new megaproject called 'Volta Grande Project', led by Canadian gold mining company Sun will be situated adjacent to same stretch that dewatered complex. Various aspects project are controversial. There reports acquired public lands illegally, affected area has high biodiversity and endemism several taxonomic groups, operations would...
Abstract Human activities affecting freshwater ecosystems, such as regulation of rivers by dams and introduction non‐native species, are recognised major threats to biodiversity, with fish communities strongly impacted. We evaluated patterns functional diversity native species in local assemblages the upper Paraná River floodplain over a 33‐year period (1986–2019) three different degrees alteration (highly altered, moderately little altered). also examined effect on investigated responses...
Como parte de estudo populacional sobre condições saúde na infância, uma amostra representativa das crianças menores cinco anos residentes no Município São Paulo, SP (Brasil) (n=695) foi submetida a exames parasitológicos fezes. Os foram realizados através da técnica sedimentação e, quando as fezes tinham consistência amolecida ou liquefeita, também pela do exame direto. A prevalência enteroparasitoses em geral 30,9%, sendo 16,4%, 14,5% e 12,5% prevalências específicas ascaridíase, giardíase...
Abstract The unrestrained ongoing construction of dams in rivers high-priority for conservation represents a common threat to environment and surrounding societies. In Brazil, despite several known negative impacts assigned poorly planned dams, Federal State Governments maintain the policy expansion hydroelectric matrix. outcome includes impoundments remaining that are extremely important biodiversity conservation. Here, we suggest strategies prevent proven be high priority or with potential...
ABSTRACT. The relationships between the degree of dietary overlap and food availability, implications for selectivity fish species were evaluated at floodplain lakes on upper Paraná River floodplain, Brazil. hypothesis tested were: i) become less selective in with high availability resources; ii) (interspecific) or individual (intraspecific) present higher conditions resources. In general, results was observed that when environment provided Interspecific did not show a pattern evaluating...
The flood pulse is the main driving force for communities' structure and functioning in river-floodplain systems. High synchrony exists between hydrological cycle reproductive events several fish species. However, species with different strategies can respond ways to regime. Thus, this study intends evaluate relationship recruitment of guilds freshwater attributes (flood duration, maximum annual water level, delay flood) from a time series 20 years Upper Paraná River floodplain, Brazil....
This work aimed to determine which population features were important the colonization process of Astyanax altiparanae in Corumbá Reservoir. The species presented wide spatial-temporal distribution, caught all months and sites. Higher CPE values recorded upstream from reservoir during filling phase. In this phase, reproductive activity was intense moderate tributaries. However, a fall abundance juveniles observed after formation reservoir. Among most relevant grant successful geographic...
Abstract Anthropogenic impacts are altering ecosystems, especially aquatic habitats, resulting in the loss of critical biodiversity. This study aimed to evaluate influence human pressure, as surrogated by footprint index (HFI), on functional diversity fish assemblages from 109 Neotropical reservoirs while considering covariates such temperature, flooded area and age since damming. We assessed two components (richness dispersion) specific trait composition each assemblage. found that both...
Analyzing aquatic organisms present in fish stomachs is a good way to determine their availability the environment. This paper aims organism (especially benthos) for bentophagous fishes and analyze spatial, temporal ontogenetic changes diets. Samples were monthly taken from March 2000 February 2001, through electrofishing, two streams of Iguacu River. The analyzed (329 units) results expressed volumetric method. diet was composed benthic invertebrates, especially insects several orders,...
Abstract Dams and associated reservoirs cause drastic changes in the composition structure of ichthyofauna. Therefore, functional groups within a fish assemblage may respond distinctly to such human interventions rivers. The objective this study was evaluate how fluctuations abundance biomass differ among trophic guilds. Fish were sampled before after damming four reservoirs, their inner areas (more heavily impacted areas) upstream (less areas). To possible changes, we used before–after...
An intensively debated issue in ecology is whether the variations biodiversity patterns of different biological groups are congruent space and time. In addition, ecologists have recognized necessity accounting for both taxonomic functional facets when analysing spatial temporal congruence patterns. This study aimed to determine how cross-taxon beta diversity varies across time, using data from four floodplains at a continental scale. Our general hypothesis was that between aquatic groups,...