A5007408166- Fish Ecology and Management Studies
- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Freshwater macroinvertebrate diversity and ecology
- Wildlife Ecology and Conservation
- Animal Behavior and Reproduction
- Hydrology and Sediment Transport Processes
- Isotope Analysis in Ecology
- Diversity and Career in Medicine
- Career Development and Diversity
- Hydrology and Watershed Management Studies
- Aquaculture Nutrition and Growth
- scientometrics and bibliometrics research
- Avian ecology and behavior
- Soil and Water Nutrient Dynamics
- Hemispheric Asymmetry in Neuroscience
- Physiological and biochemical adaptations
- Genetic diversity and population structure
- Bat Biology and Ecology Studies
- Ichthyology and Marine Biology
- Marine Bivalve and Aquaculture Studies
- Work-Family Balance Challenges
- COVID-19 and healthcare impacts
- Marine and fisheries research
- Primate Behavior and Ecology
Universidade do Estado do Rio de Janeiro
2016-2025
Drexel University
2007-2017
Theory suggests evolutionary change can significantly influence and act in tandem with ecological forces via ecological-evolutionary feedbacks. This theory assumes that significant occurs over ecologically relevant timescales phenotypes have differential effects on the environment. Here we test hypothesis local adaptation causes ecosystem structure function to diverge. We demonstrate populations of Trinidadian guppies (Poecilia reticulata), characterized by differences phenotypic...
The coronavirus disease 2019 (COVID-19) pandemic is altering dynamics in academia, and people juggling remote work domestic demands – including childcare have felt impacts on their productivity. Female authors faced a decrease paper submission rates since the beginning of period. reasons for this decline women’s productivity need to be further investigated. Here, we analyzed influence gender, parenthood race academic during period based survey answered by 3,345 Brazilian academics from...
As daily life grinds to a halt worldwide in response the coronavirus disease 2019 (COVID-19) pandemic, professionals are adjusting new reality of remote working. For many researchers, release from teaching and administrative activities means more time for independent work. In contrast, parents young children whom school has been cancelled facing uniquely challenging responsibilities. Although academic fathers not immune impacts confinement, it is traditionally women who carry heaviest load...
1. Life histories evolve as a response to multiple agents of selection, such age-specific mortality, resource availability or environmental fluctuations. Predators can affect life-history evolution directly, by increasing the mortality prey, and indirectly, modifying prey density resources available survivors. Increasing survivor densities intensify intraspecific competition cause evolutionary changes in their selectivity, also affecting nutrient acquisition. 2. Here, we show that different...
The elemental content of life is a key trait shaping ecology and evolution, yet organismal stoichiometry has largely been studied on case-by-case basis. This limitation hindered our ability to identify broad patterns mechanisms across taxa ecosystems. To address this, we present StoichLife, global dataset 28,049 records from 5,876 species spanning terrestrial, freshwater, marine realms. Compiled published unpublished sources, StoichLife documents stoichiometric ratios (%C, %N, %P, C:N, C:P,...
1. Ecological stoichiometry expresses ecological interactions as the balance between multiple elements. It relates function of organisms to their elemental composition, or organismal stoichiometry. Organismal is thought reflect investments in life history and morphology acting concert with variability abiotic environmental conditions, but relative contribution these factors natural poorly understood. 2. We assessed stream identity, predation, body size sex guppies (Poecilia reticulata) six...
Laboratory and field studies have documented better cognitive performance associated with marked hemispheric specialization in organisms as diverse chimpanzees, domestic chicks topminnows. While providing an evolutionary explanation for the emergence of cerebral lateralization, this evidence represents a paradox because large proportion non-lateralized (NL) individuals is commonly observed animal populations. Hemispheric often determines left-right differences perceiving responding to...
Abstract Alien species often flourish and become invasive in urban ecosystems. How why invaders succeed systems is an important, yet poorly understood, question. We investigate whether the success of related to changes traits that enhance potential. also explore a trophic mechanism helps explain systems. use guppy Poecilia reticulata , globally distributed alien has invaded both non‐urban systems, as our model. first characterize effect urbanization on streams where guppies are present....
Light, nutrient availability, and flow are strong factors controlling the elemental composition biomass of epilithon in temperate stream ecosystems. However, comparatively little is known about these relationships tropical streams. We investigated how gradients light seasonality, habitat influenced biomass, chlorophyll a, ratios montane streams Trinidad, West Indies. sampled 4 focal tributaries a single river, 2 which had canopies experimentally thinned, every other month over 2-y period to...
Phenotypic plasticity is advantageous for organisms that live in variable environments. The digestive system particularly plastic, responding to changes diet. Gut length the result of a trade-off between maximum nutrient absorption and minimum cost its maintenance it can be influenced by diet evolutionary history. We assessed variation gut Trinidadian guppies (Poecilia reticulata) as function diet, season, ontogeny, local adaptation. Populations adapted different predation levels have...
Worldwide, parenthood remains a major driver for the reduced participation of women in job market, where discrimination stems from people's biases against mothers, based on stereotypes and misconceptions surrounding vision motherhood our society. In academia, may be perceived as negatively affecting scientists' commitment dedication, especially women's. We conducted survey amongst Brazilian scientists found that mothers self-reported higher prevalence negative bias their workplace when...
The elemental composition of animals, or their organismal stoichiometry, is thought to constrain contribution nutrient recycling, interactions with other and demographic rates. Factors that affect stoichiometry are generally poorly understood, but likely reflect investments in morphological features life history traits, acting concert the environmental availability elements. We assessed relative traits variability an insectivorous Neotropical stream fish, Rivulus hartii. characterized...
Abstract While the Coronavirus disease 2019 (COVID-19) pandemic is altering academia dynamics, those juggling remote work and domestic demands – including childcare - have already felt impacts on productivity. Female authors are facing a decrease in papers submission rates since beginning of period. The reasons for this decline women productivity need to be further investigated. Here we show influence gender, parenthood race academics during period, based survey answered by 3,345 Brazilian...
Riparian deforestation may strongly affect stream functioning, with consequences for biodiversity and ecosystem services. These effects can be assessed using bioindicators relating to biotic community structure functioning. We evaluated the of riparian on 1. measures aquatic benthic invertebrates, 2. an aspect leaf processing. selected sites along gradients land use in four Atlantic rainforest streams measured physical chemical properties their association deforestation. sampled...
(2009). Challenges for interpreting stable isotope fractionation of carbon and nitrogen in tropical aquatic ecosystems. SIL Proceedings, 1922-2010: Vol. 30, No. 5, pp. 749-753.
Population variation in trophic niche is widespread among organisms and of increasing interest given its role both speciation adaptation to changing environments. Trinidadian guppies (Poecilia reticulata) inhabiting stream reaches with different predation regimes have rapidly evolved divergent life history traits. Here, we investigated the effects resource availability on guppy niches by evaluating their gut contents, standing stocks, δ
Summary Periphytic algae are an important source of energy fuelling stream food webs. algal biomass can be controlled by bottom‐up and top‐down forces, but there few studies that have investigated these effects simultaneously, especially in tropical streams, where periphyton a very carbon source. Here, we the nutrients grazers predators coastal Brazil. We employed nutrient‐diffusing substrata to test for nutrient limitation, placed inside electric exclosures different intensities, which...
Abstract This study investigates the effect of a predation gradient on female life history traits poeciliid live‐bearing fish Phalloceros harpagos from tropical stream in Brazil. Females’ length at maturity, somatic dry mass, reproductive allotment and fecundity varied significantly among sites. high‐predation site showed smaller size maturity greater higher than nonpredation site. In all sites, we observed superfetation: pregnant females with two broods different developmental stages. The...
Abstract Nutrient limitation assessment is important to understand stream ecosystem functioning. Aquatic primary producers are often limited by nitrogen, phosphorus, or both, as assessed nutrient diffusing substrata (NDS), a common method for assessing in streams. But little known regarding how this relates patterns of uptake at the whole‐stream scale. We combined two techniques examine tropical stream. First, we conducted NDS experiments using ammonium, nitrate, and phosphate alone...
Despite the progress observed in recent years, women are still underrepresented science worldwide, especially at top positions. Many factors contribute to progressively leaving academia different stages of their career, including motherhood, harassment and conscious unconscious discrimination. Implicit bias plays a major negative role recognition, promotions career advancement female scientists. Recently, rank most influential scientists world was created based on several metrics, number...
The effect of consumers on their resources has been demonstrated in many systems but is often confounded by trophic interactions with other consumers. Consumers may also have behavioral and life history adaptations to each co-occurring predators that additionally modulate particular roles ecosystems. We experimentally excluded large from tile periphyton, leaves natural benthic substrata using submerged electrified frames three stream reaches overlapping consumer assemblages Trinidad, West...
We estimated the net primary productivity of periphyton algae and rate macroinvertebrate grazing in a third-order stream coastal Atlantic forest, Brazil. Net was from growth curve chlorophyll, based on relationship between algal density production, with baetid ephemeropteran grazers excluded by high-intensity electric shocks. fit logistic model cite maximum 44.7 mg C m−2 d−1. manipulated pressure excluding shrimp Macrobrachium olfersi low-intensity electrical exclusion—the known to have...
Abstract Interspecific differences in organismal stoichiometry ( OS ) have been documented a wide range of animal taxa and are significant interest for understanding evolutionary patterns . In contrast, intraspecific variation has generally treated as analytical noise or random variation, even though available data suggest variability is widespread. Here, we assess how affects inferences about interspecific using two co‐occurring Neotropical fishes: Poecilia reticulata Rivulus hartii A...