A5001050051- Fish Ecology and Management Studies
- Isotope Analysis in Ecology
- Fish biology, ecology, and behavior
- Aquatic Invertebrate Ecology and Behavior
- Fish Biology and Ecology Studies
- Public Health and Environmental Issues
- Innovations in Medical Education
- Health and Medical Education
- Mosquito-borne diseases and control
- Environmental Toxicology and Ecotoxicology
- Latin American Cultural Politics
- HIV/AIDS oral health manifestations
- Meat and Animal Product Quality
- Educational Research and Science Teaching
- Public Health and Social Inequalities
- Environmental Sustainability and Education
- Freshwater macroinvertebrate diversity and ecology
- Electromagnetic Compatibility and Noise Suppression
- Power Line Communications and Noise
- Fungal Infections and Studies
- Higher Education and Sustainability
- Sustainability and Ecological Systems Analysis
- Marine Bivalve and Aquaculture Studies
- Education and Public Policy
- Pneumonia and Respiratory Infections
Universidad de la República de Uruguay
2019-2024
Instituto de Investigaciones Biológicas Clemente Estable
2019-2021
University of Carabobo
2009-2013
Abstract The invasive Asian golden mussel Limnoperna fortunei is continuously expanding through South America, altering aquatic ecosystem structure and functioning. While several native fish species predate on this mussel, these interactions, their consequences for the food web, have not been studied in depth. We combine a survey of assemblage trophic using gut contents stable isotope analysis with an situ exclusion experiment order to: (a) determine main predating L. ; (b) estimate...
In naturally flowing waters, communities are expected to increase their taxonomic and functional diversity as well the complexity of food web architecture along longitudinal gradient from headwaters mouth. However, these theories do not necessarily apply dammed rivers. We analysed fish at 12 locations 1700 km stretch transnational Uruguay River. determined species richness, beta-diversity its components (turnover nestedness), trophic diversity, isotopic niches community level, with...
The Neotropics represent a hotspot for freshwater biodiversity with vast number of fish species scarce ecological knowledge. This holds true the Uruguay River, where assemblages and their diets remain unexplored. Fish were surveyed in 14 sites along river main course, from headwaters to mouth (approximately 1800 km), aim identify trophic roles fishes describe structure these assemblages, following standardized sampling campaigns laboratory procedures. One hundred (2309 gut contents) analysed...
Abstract Unravelling the effect of climate variability on species biology has been one main goals ecological studies. Environmental factors such as river discharge and temperature have being proposed triggers reproductive cycle in fish. In temperate climates, fish reproduction is affected mainly by temperature, while influenced flood pulses large tropical rivers. We evaluated influence Iheringichthys labrosus’ . studied following variables: gonadosomatic index (GSI), hepatosomatic (HSI)...
The ecosystem effects of Limnoperna fortunei have been studied nationally in recent years. However, the interactions that this invader establishes with native benthic fauna not determined detail. objective study was to collect information on between golden mussel and macroinvertebrates Uruguay River, through (a) bibliographic survey, (b) photographic record obtained field (c) analysis data from an experiment colonization carried out previously rocky shores river. reported bibliography mainly...
Abstract Increasing human pressures threaten fish diversity, with potentially severe but unknown consequences for the functioning of riverine food webs. Using a 17‐year dataset from multi‐trophic communities, we investigated long‐term effects pressure on diversity and web functioning. Combining metabolic scaling ecological network principles, calculate annual energy fluxes through trophic compartments (top‐carnivore, mesocarnivore, detritivore omnivore). Energy link compartments, thus...
The accurate estimation of trophic discrimination factors (TDFs) for stable carbon and nitrogen isotopes (Δ13C Δ15N) requires studies each particular species or taxonomic group, because the use general TDFs values all animals obtained from literature represents an important bias in isotopic modelling. Values Δ13C Δ15N were estimated aquatic food chain (periphyton-Chironomini-Perithemis sp.), a subtropical region South America, under experimental conditions using two approaches: i)...
Abstract Genidens barbus is a vulnerable marine migrant catfish with low fecundity, complex life cycle (i.e. mouth breeding), and the target of industrial artisanal fisheries several countries. This species regularly migrates from to freshwater environments south‐western Atlantic. The aim this work was delve deeper into migration ecology G. , characterizing both its timing potential environmental drivers. Furthermore, aspects population structure reproduction migrants in lower Uruguay River...
Several theories attempt to explain the ecological dynamics of running waters along longitudinal gradient from headwaters mouth. In naturally flowing waters, fish communities are expected increase their taxonomic and functional diversity as well complexity food web architecture downstream. However, these do not necessarily apply when hydrological flows disrupted by dams. this study, we analysed at twelve locations 1700 km stretch Uruguay River. We determined species richness, trophic...
Increasing human pressures threaten fish diversity, with potentially severe but unknown consequences to the functioning of riverine food webs. Using a 17-years dataset from multi-trophic communities, we investigated long-term effects pressure (represented by footprint) on species richness and energy flux across webs, measure ecosystem functioning. Combining metabolic scaling theory ecological network principles, calculate annual through varying trophic compartments (i.e., top-carnivore,...