A5036122543- Marine and coastal ecosystems
- Aquatic Ecosystems and Phytoplankton Dynamics
- Microbial Community Ecology and Physiology
- Marine Biology and Ecology Research
- Marine Bivalve and Aquaculture Studies
- Isotope Analysis in Ecology
- Water Quality and Pollution Assessment
- Hydrological Forecasting Using AI
- Fish Ecology and Management Studies
- Neural Networks and Applications
- Statistical and Computational Modeling
- Ocean Acidification Effects and Responses
- Atmospheric and Environmental Gas Dynamics
- Water Quality Monitoring Technologies
- Hydrocarbon exploration and reservoir analysis
- Algal biology and biofuel production
- Fish biology, ecology, and behavior
- Viral gastroenteritis research and epidemiology
- Methane Hydrates and Related Phenomena
- Ecosystem dynamics and resilience
- Protist diversity and phylogeny
- Coral and Marine Ecosystems Studies
- Plant and animal studies
- Aquatic Ecosystems and Biodiversity
- Geological and Geophysical Studies
Aarhus University
2018-2020
Universidade Federal de Minas Gerais
2018-2019
Universidade Federal de Santa Catarina
2012-2018
Universidade do Oeste de Santa Catarina
2010
Recent studies from temperate lakes indicate that eutrophic systems tend to emit less carbon dioxide (CO2) and bury more organic (OC) than oligotrophic ones, rendering them CO2 sinks in some cases. However, the scarcity of data tropical is critical for a complete understanding interplay between eutrophication aquatic (C) fluxes warm waters. We test hypothesis system source both CH4 atmosphere, atmospheric emissions are larger burial OC sediments. This was based on following assumptions: (i)...
The present study evaluated the contamination of a surface water lagoon (Peri Lagoon) in Florianópolis, Santa Catarina, Brazil, by human adenovirus (HAdV), polyomavirus JC (JCPyV), hepatitis A virus (HAV) and rotavirus species (RVA). Efforts were driven to determine correlation between viral presence physicochemical parameters measure distribution these viruses throughout year (June 2010 May 2011). total 48 samples collected, concentrated analyzed qPCR (quantitative polymerase chain...
Abstract. Despite the increasing understanding about differences in carbon cycling between temperate and tropical freshwater systems, our knowledge on importance of organic matter (OM) pools light absorption properties lakes is very scarce. We performed a factorial mesocosm experiment lake (Minas Gerais, Brazil) to evaluate effects increased concentrations allochthonous autochthonous OM, availability characteristics chromophoric dissolved (CDOM). Autochthonous OM deriving from phytoplankton...
AIM: The aim of the present study was to vertical variation in phytoplankton community a subtropical coastal lake and verify temporal this following temperature dissolved nitrogen phosphorus. METHODS: Sampling abiotic variables were performed monthly from June/2009 January/2011 at four depths central part Peri Lake. data analyzed using analysis variance, correlation canonical correspondence analysis. RESULTS: Vertical limnological did not occur but found. limited by light nutrients...
To understand the dynamics of planktonic prokaryotes in a subtropical lake and its relationship with carbon, we conducted water sampling through four 48-h periods Peri Lake for 1 year. Planktonic were characterized by abundance biomass heterotrophic bacteria (HB) cyanobacteria (coccoid filamentous cells). During all samplings, measured wind speed, temperature (WT), pH, dissolved oxygen (DO), precipitation, organic carbon (DOC), inorganic (DIC), dioxide (CO2). DOC was higher summer (average =...
Although many studies have shown that the dispersion, increased abundance and dominance of cyanobacteria can be attributed to nutrient enrichment, we discuss features contributing Cylindrospermopsis raciborskii in a shallow, polymictic, subtropical coastal lake with low phosphorus light limitation (Peri Lake). The presence C. an environment such characteristics emphasizes idea nutrients alone do not explain high density this cyanobacterium. Other should considered explaining species...
Abstract Food web studies provide a useful tool to assess the organization and complexity of natural communities. Nevertheless, seasonal dynamics food properties, their environmental correlates, potential association with community diversity stability remain poorly studied. Here, we condensed an incomplete 6‐year dataset subtropical coastal lake examine how monthly variation in impacts structure over idealized time series for averaged year. Phytoplankton, zooplankton, macroinvertebrates,...
Planktonic primary production and respiration rates were estimated in a subtropical coastal lake dominated by Cyanobacteria order to investigate the temporal vertical variation this evaluate its relationships with limnological variables phytoplankton. Light dark bottles incubated at four different depths central part of performed bimonthly from June/2009 December/2010. No significant difference was evident among relation phytoplankton, metabolic rates. However, highest recorded surface,...
The aquatic metabolism comprises production and mineralization of organic matter through biological processes, such as primary respiration that can be estimated by gases concentration in the water column. AIM: study aimed to assess temporal variability pCO2 pO2 littoral zone a subtropical coastal lake. Our hypotheses are i) high meteorological conditions, temperature light, drive pO2, ii) lake is permanently heterotrophic due low phosphorus concentration. METHODS: We from pH-alkalinity...
The aim of this study was to investigate whether the bacterioplankton activity in meso-eutrophic Conceição Lagoon would increase significantly under allochthonous inputs inorganic nutrients and organic carbon. Abundance biomass were evaluated three treatments: light (14 h light/10 dark), complete darkness (dark-control), nutrient (C + N P—dark, 100 : 10 1) enrichments during 72 h. Nutrient promoted a significant abundance (maximum 19.0 ×10 9 cells·L −1 first 32 hours) heterotrophic...
We assessed the importance of boulder reefs to oxygen dynamics a shallow estuary during two growing seasons in 2017 and 2018. Using open-system diel measurements benthic pelagic incubations, we evaluated relative contribution habitats ecosystem metabolism along depth gradient areas, with (Reef) without (Bare) Limfjorden, Denmark. System integrated areal rates gross primary production (GPP) respiration (ER) both increased areas. Benthic system GPP ER was highest at where it represented 47 53%...
Abstract. Despite the increasing understanding about differences in carbon cycling between temperate and tropical freshwater systems, our knowledge on importance of organic matter (OM) pools light absorption properties lakes is very scarce. We performed a factorial mesocosm experiment lake (Minas Gerais, Brazil) to evaluate effects increased concentrations allochthonous autochthonous OM characteristics colored dissolved (CDOM), addition availability. added inorganic nutrients (to stimulate...