A5033964737- Toxic Organic Pollutants Impact
- Marine and coastal ecosystems
- Oil Spill Detection and Mitigation
- Microbial bioremediation and biosurfactants
- Coastal wetland ecosystem dynamics
- Marine Biology and Ecology Research
- Ocean Acidification Effects and Responses
- Microplastics and Plastic Pollution
- Hydrocarbon exploration and reservoir analysis
- Isotope Analysis in Ecology
- Water Quality and Pollution Assessment
- Geology and Paleoclimatology Research
- Environmental Toxicology and Ecotoxicology
- Petroleum Processing and Analysis
- Heavy metals in environment
- Atmospheric and Environmental Gas Dynamics
- Coastal and Marine Management
- Effects and risks of endocrine disrupting chemicals
- Microbial Community Ecology and Physiology
- Coastal and Marine Dynamics
- Plant responses to water stress
- Environmental Chemistry and Analysis
- Geological formations and processes
- Polar Research and Ecology
- Marine Bivalve and Aquaculture Studies
Universidade do Estado do Rio de Janeiro
2016-2025
Pontifical Catholic University of Rio de Janeiro
2006-2017
ABSTRACT The stable isotopes δ 13 C and 15 N are widely recognized utilized as biomarkers for analysing trophic links, paleoenvironmental reconstruction, biogeography nutrient sources. However, it is essential to further develop their applications, use in marine environmental monitoring not prominent. have distinct signatures organic compounds, which can be identify potential carbon nitrogen Marine bivalves often employed studies efficient bioindicators because sessile filter feeders tend...
Dissolved organic carbon and nitrogen (DOC DON, respectively) are important components of the nutrient cycle in marine systems. However, there still significant gaps understanding role these compounds biogeochemical cycles polar environments, due to limitations spatiotemporal sampling. Here, we present an overview surface distributions DOC DON along Northern Antarctic Peninsula (NAP) Atlantic Southern Ocean (ASO), using dataset available between 1992 2022, collected during different seasons....
SEPETIBA BAY, RIO DE JANEIRO.The inputs of organic matter derived from natural and anthropogenic sources to Sepetiba Bay were investigated by using aliphatic hydrocarbons sterols in superficial sediments.Concentrations ranged 0.26 2.65 μg g -1 , <0.01 17.41 0.77 9.24 for n-alkanes, UCM (unresolved complex mixture) total sterols, respectively.The selected markers ratios among individual compounds showed the major contribution terrestrial pool sedimentary bay, but accumulation autochthonous...
The Guanabara Bay in Rio de Janeiro has undergone profound alterations of its natural environmental conditions. Metal concentration increase sediments been reported to be among these alterations. Trace-metal contamination and availability were studied 3 mangrove areas the bay. Cd, Zn, Pb, Ni, Cu Al concentrations determined segments sediment cores, after treatment with 1 mol L-1 HCl concentrated HNO3. Fe Mn leach Concentrations low comparison those for Cd showed up 90% recovery extract....
Abstract The study of near‐pristine estuaries can be used as a tool for mitigation projects harmful effects in anthropogenic eutrophic systems, since one analyze the effect temporal and spatial variations generated mainly by natural forces. Phytoplankton taxonomy has been classical indicator to assess changes transitional water communities, however alternative methods based on morphological, behavioral physiological traits offer opportunity compare sites or moments with different taxonomic...
Dissolved organic carbon (DOC) is a key component of the biogeochemical cycle in Southern Ocean. However, there are still significant gaps understanding role DOC polar environments, due to limitations spatiotemporal sampling. In this study, we investigated regional aspects controlling distribution and diffusive advective fluxes along northern Antarctic Peninsula (NAP) during austral late summers 1995 between 2015 2019. concentrations ranged from 33.1 157.6 μmol kg-1. The NAP showed...
O histórico de acumulação em sedimentos produtos combustão produzidos na área metropolitana ao redor da Baía Guanabara foi avaliado através black carbon (BC) e hidrocarbonetos policíclicos aromáticos (HPA) como indicadores.A concentração BC variou 0,23-0,51%, com uma tendência crescente acúmulo massa longo dos últimos 118 anos, mas a proporção BC/carbono orgânico caiu nos 30 possivelmete reflexo eutrofização.Observaram-se as maiores concentrações HPAs pirolíticos períodos entre 1925 1976,...
As of August 2019, several oil slicks reached the Brazilian coast, compromising local ecosystems and economy coastal communities. In this context, study aimed to assess seafood quality at Canavieiras Extractive Reserve (RESEX), located in state Bahia, Northeastern Brazil, by determining polycyclic aromatic hydrocarbons (PAHs) concentrations biota following spill. It was designed carried out a participatory manner, involving RESEX fishers, shellfish crab gatherers managers, as well university...
Os processos de deposição e preservação matéria orgânica (OM) em sedimentos da Baía Ilha Grande, sudoeste Atlântico, foram avaliados através análise elementar (C N) marcadores moleculares (esteróis n-alcoois).Foram analisadas amostras quatro testemunhos datados, representando diferentes níveis tipos influência antrópica.A concentração total esteróis variou 71 a 9.320 ng g -1 , com predomínio 24-etil-colesta-5,22-dien-3β-ol, 24-etilcolest-5-en-3β-ol 24-etil-5a-colest-3β-ol. Entre os...