A5032006508- Fish Ecology and Management Studies
- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Environmental and biological studies
- Marine and coastal plant biology
- Growth and nutrition in plants
- Weed Control and Herbicide Applications
- Ecology and Vegetation Dynamics Studies
- Aquatic Ecosystems and Biodiversity
Universidade Estadual de Maringá
2019-2024
Abstract Populations of generalist fish can be composed individuals specialised to a small subset food resources, process known as individual specialisation. In this study, we hypothesised that variation in the diet and morphology is related habitat complexity greater levels specialisation are found at intermediate macrophyte biomass. Fish aquatic plants were sampled 15 multispecific stands with different biomasses Baía River (Upper Paraná floodplain). We assessed using biomass macrophytes...
Abstract Habitat complexity is recognized to mediate predator–prey relationships by offering refuge or not. We investigated the availability of planktonic microcrustaceans and diet a planktivorous fish (Hyphessobrycon eques) at different levels (low, intermediate high) aquatic macrophyte biomass. Sampling was carried out in river with low flow speed, located Neotropical floodplain. collected stands variations There were no differences microcrustacean density water among biomass, but richness...
Abstract The hydrological regime leads to fluctuations in the availability of food resources for fish, which may reflect their diet variation. Our main goal was analyze relationship between water-level and body condition Trachelyopterus galeatus Upper Paraná River floodplain. fish used study were sampled quarterly along nine years, at sampling stations. results showed that T. varied response oscillations hydrometric level, with consumption terrestrial invertebrates being positively related...
Abstract Aquatic macrophytes serve as shelter and a direct source of food for invertebrates, in addition to indirectly providing items such algae, detritus, microorganisms. Thus, aquatic act habitat structuring elements, requiring distinction between complexity (physical formations fractal dimensions, density biomass) heterogeneity (diversity these structures). Here we explore the effects on invertebrate community. We collected invertebrates from 28 sampling sites along 13.7‐km stretch Baía...
Abstract Studies that combine functional and taxonomic beta-diversity are essential for explaining some ecological processes, including the process of species invasion. We evaluated whether environmental factors (such as lake connectivity, subsystem hydrological period) biological (occurrence richness non-native native fish species) affect components (total, replacement) communities living in Upper Paraná River floodplain Brazil. For this, a distance-based redundancy analysis (dbRDA) was...