Article
Environmental Sciences
Lorena da Graca Pedrosa de Macena, Renato Castiglia Feitosa, Carmen Baur Vieira, Irene Trigueiros Araujo, Mami Taniuchi, Marize Pereira Miagostovich
Summary: This study utilized a molecular tool to assess microbiological contamination in a coastal ecosystem area in Rio de Janeiro, Brazil, identifying a diverse range of enteropathogens and indicator microorganisms in the water samples. The results suggest potential microbial contamination risks in the area, highlighting the importance of monitoring and addressing water quality issues in rapidly developing urban regions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Ecology
Leonardo Bacha, Rodrigo Ventura, Maria Barrios, Jean Seabra, Diogo Tschoeke, Gizele Garcia, Bruno Masi, Larissa Macedo, Jose Marcus de O. Godoy, Carlos Cosenza, Carlos E. de Rezende, Vinicius Lima, Adacto B. Ottoni, Cristiane Thompson, Fabiano Thompson
Summary: The Guandu River, a major water source for over nine million people in Rio de Janeiro, has been heavily polluted for more than two decades, leading to high levels of phosphorus, cyanobacteria, and enteric bacteria. The use of Phoslock has proven ineffective in reducing phosphorus levels, and water extracted from the river has unpleasant odors and tastes. Proposed solutions include constructing sewage treatment plants, implementing strict water quality monitoring, environmental recovery efforts, and establishing protected areas to improve water quality.
Article
Environmental Sciences
Matheus Teixeira, Ricardo Cesar, Denis Abessa, Celeste Siqueira, Rodrigo Lourenco, Mariana Vezzone, Yan Fernandes, Gustavo Koifman, Fernando Cesar Perina, Roberto Meigikos dos Anjos, Helena Polivanov, Zuleica Castilhos
Summary: This study assessed the sediment quality of Tijuca Lagoon in Rio de Janeiro, Brazil and found contamination and toxicity, such as PAHs and heavy metals, in the sediments. While PAH and metal concentrations were not significantly correlated with the mortality of burrowing amphipods, domestic sewage contributions and eutrophication had a significant impact on sediment toxicity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Raquel A. F. Neves, Agatha Miralha, Tamara B. Guimaraes, Rayane Sorrentino, Monica R. C. Marques Calderari, Luciano N. Santos
Summary: This study aimed to assess sediment contamination by different pollutants in coastal and marine environments at Rio de Janeiro, Brazil. The results showed environmental differences between coastal lagoon and oceanic beaches, mostly influenced by marine waters, while sediment characteristics largely varied among bay's beaches. PAHs and BPA were not detected, but PAEs were found for the first time in the sediments of Rio de Janeiro coast. DEHP was detected in all environments, DBP in coastal lagoon and three marine environments, and DnOP and DINP solely in the coastal lagoon.
MARINE POLLUTION BULLETIN
(2023)
Article
Geosciences, Multidisciplinary
Paula Fernanda Chaves Soares, Rafael Cipriano da Silva, Eduardo Carvalho da Silva Neto, Marcos Gervasio Pereira, Carlos Roberto Pinheiro Junior, Luiz Carlos Ruiz Pessenda, Lucia Helena Cunha dos Anjos
Summary: This study evaluated the properties of Histosols in wetlands using isotopic and radiocarbon dating methods, revealing a mixture of algae and terrestrial organic matter deposited over the last 4000 years. The soils were formed by a combination of geogenic and pedogenic processes, indicating vertical accretion in lake environments.
Article
Zoology
Isabele Corte, Nathalia H. Pecly, Victor Quintas, Andre L. D. Ferreira, Rodney R. Cavichioli, Gabriel Mejdalani
Summary: Two new species of Paratubana from southeastern Brazil were described, both closely related to each other and using Eryngium as host plants. The study also included a key to males of the genus's ten known species and distribution maps.
Article
Environmental Sciences
Pedro Ivo Bastos de Castro, He Yin, Paulo Domingos Teixera Junior, Eduardo Lacerda, Rui Pedroso, Sven Lautenbach, Raul Sanchez Vicens
Summary: The mapping and changes of sugarcane plantations are important for the economy and environment, especially in the biofuel industry. This study evaluates two approaches to address the challenge of mapping sugarcane abandonment in a region dominated by smallholders in Brazil. Using Landsat imagery and temporal analysis, the study reveals the spatial and temporal patterns of sugarcane abandonment and provides a necessary database for further research on the underlying causes.
REMOTE SENSING OF ENVIRONMENT
(2022)
Article
Marine & Freshwater Biology
Mathias Chynel, Sofia Rockomanovic, Gwenael Abril, Glenda Barroso, Humberto Marotta, Wilson Machado, Christian J. Sanders, Najet Thiney, Tarik Meziane
Summary: Mangrove sediments have a high capacity of carbon storage, but are vulnerable to degradation and carbon losses due to urbanization. The level of eutrophication varies among different mangroves.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Zoology
Victor C. Calvanese, Antonio D. Brescovit
Summary: This study describes Mecophilus carioca n. sp. based on male and female specimens recently sampled in the Parque Nacional de Itatiaia, Rio de Janeiro, Brazil. The specimens were analyzed using light microscopy and scanning electron microscopy, and photos and schematic illustrations are provided. A map illustrating the known distribution of the three species of Mecophilus is also presented.
Article
Multidisciplinary Sciences
Antonio Jailson De S. Rodrigues, Mauricio R. Fernandes, Igor C. Miyahira, Luciano N. Dos Santos, Carlos Henrique S. Caetano
Summary: The study focused on the invasion of Mytilopsis leucophaeata in Rodrigo de Freitas Lagoon, Rio de Janeiro, Brazil, analyzing the composition and structure of the benthic macrofauna associated with the invader, as well as the spatiotemporal variation of richness, density, and diversity of the benthic community. Water quality parameters and high densities of the invader were found to contribute to variations in density of associated species. Oscillations in densities of Mytilopsis leucophaeata and native bivalve Brachidontes darwinianus suggest some agonistic relationship between them.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2021)
Article
Environmental Studies
Jeff Garmany, Rafael Goncalves de Almeida
Summary: In this article, the authors analyze the concept of 'urban informality' in Rio de Janeiro, Brazil. They explore the changes in the understanding of informal housing (favelas) throughout Rio's history and argue that the concept of informality perpetuated orientalist knowledge in urban development theories. This article highlights how conceptualizations of favelas reflect societal and political anxieties related to urban development and the control of informal spaces.
ENVIRONMENT AND PLANNING D-SOCIETY & SPACE
(2023)
Article
Ecology
M. C. Vicente, A. C. B. Carvalho, C. L. Trevisan, F. F. L. Soares, J. C. Wasserman
Summary: Hypersaline systems are sensitive to severe osmotic pressure and the introduction of inorganic dissolved nutrients may cause severe impacts on water quality, leading to eutrophication and fish mortalities. The study in Araruama Lagoon showed that atypical summer precipitation and nutrients from domestic effluents had unexpected negative environmental impacts.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Article
Geochemistry & Geophysics
Rafael Cuellar de Oliveira E Silva, Gilberto Tavares de Macedo Dias, Rodrigo Coutinho Abuchacra, Sergio Cadena de Vasconcelos, Kita Chaves Damasio Macario, Estefan Monteiro da Fonseca
Summary: This study reveals the past sea-level variations and sediment formation processes of the coastal plain in Rio de Janeiro, Brazil. Through core sampling and analysis, the researchers inferred the timing of marine transgressions and regressions, confirming prior models proposed for the region and showing similarities with the New South Wales coast in Australia.
Article
Plant Sciences
Eliane De Lima Jacques
Summary: Begonia piraquara is a species endemic to the Brazilian Atlantic Rainforest, resembling B. fimbritepala E.L.Jacques in leaf shape but differing in certain characteristics such as the presence of cystoliths and the margins of staminate tepals.
Article
Microbiology
Alice Pereira Berbigier, Juliana Helena da Silva Barros, Edilene Sousa Pontes, Cristiane Varella Lisboa, Rosana Gentile, Samanta Cristina das Chagas Xavier, Ana Maria Jansen, Andre Luiz Rodrigues Roque
Summary: The survey of trypanosomatid infection in small mammals in the Atlantic Forest area in Rio de Janeiro revealed a diverse range of trypanosomatid species/genotypes infecting the hosts. Even in disturbed areas with low mammal species diversity, a significant number of hosts were found infected, highlighting the generalist aspect of these parasites.
Article
Ecology
Catharina Alves-de-Souza, Tatiane S. Benevides, Mariangela Menezes, Christian Jeanthon, Laure Guillou
Article
Chemistry, Medicinal
Andrew M. Fribley, Yue Xi, Christina Makris, Catharina Alves-de-Souza, Robert York, Carmelo Tomas, Jeffrey L. C. Wright, Wendy K. Strangman
ACS MEDICINAL CHEMISTRY LETTERS
(2019)
Article
Food Science & Technology
Catharina Alves-de-Souza, Jose Luis Iriarte, Jorge I. Mardones
Article
Plant Sciences
Maria Cristina de Queiroz Mendes, Jose Marcos de Castro Nunes, Santiago Fraga, Francisco Rodriguez, Jose Mariano Franco, Pilar Riobo, Suema Branco, Mariangela Menezes
Article
Marine & Freshwater Biology
Suema Branco, Lidiane L. Almeida, Catharina Alves-de-Souza, Mair M. M. Oliveira, Luis A. O. Proenca, Mariangela Menezes
PHYCOLOGICAL RESEARCH
(2019)
Article
Plant Sciences
Helen Michelle De Jesus Affe, Jose Marcos De Castro Nunes, Luis Antonio De Oliveira Proenca, Renata Stock Fonseca, Mariangela Menezes
Article
Multidisciplinary Sciences
Ruibo Cai, Ehsan Kayal, Catharina Alves-de-Souza, Estelle Bigeard, Erwan Corre, Christian Jeanthon, Dominique Marie, Betina M. Porcel, Raffaele Siano, Jeremy Szymczak, Matthias Wolf, Laure Guillou
SCIENTIFIC REPORTS
(2020)
Article
Marine & Freshwater Biology
Suema Branco, Mair M. M. Oliveira, Fabiano Salgueiro, Mauro C. P. Vilar, Sandra M. F. O. Azevedo, Mariangela Menezes
Article
Biology
Sarah Farhat, Phuong Le, Ehsan Kayal, Benjamin Noel, Estelle Bigeard, Erwan Corre, Florian Maumus, Isabelle Florent, Adriana Alberti, Jean-Marc Aury, Tristan Barbeyron, Ruibo Cai, Corinne Da Silva, Benjamin Istace, Karine Labadie, Dominique Marie, Jonathan Mercier, Tsinda Rukwavu, Jeremy Szymczak, Thierry Tonon, Catharina Alves-de-Souza, Pierre Rouze, Yves van de Peer, Patrick Wincker, Stephane Rombauts, Betina M. Porcel, Laure Guillou
Summary: This study sequenced and analyzed the genomes of two early-diverging parasitic dinoflagellate Amoebophrya strains, revealing compact genomes, shared orthologs with Dinophyceae, and high levels of gene synteny conservation. Interestingly, non-canonical introns with diverse splicing motifs were identified, suggesting rapid protein evolution in these unicellular parasites. Loss of organelles was also confirmed, raising questions about speciation and evolutionary mechanisms in parasitic unicellular lineages.
Article
Microbiology
Ehsan Kayal, Catharina Alves-de-Souza, Sarah Farhat, Lourdes Velo-Suarez, Joanne Monjol, Jeremy Szymczak, Estelle Bigeard, Dominique Marie, Benjamin Noel, Betina M. Porcel, Erwan Corre, Christophe Six, Laure Guillou
FRONTIERS IN MICROBIOLOGY
(2020)
Article
Marine & Freshwater Biology
Isabel do Prado Leite, Leonardo Sandrini-Neto, Francisco Lagreze Squella, Thiago Pereira Alves, Mathias Alberto Schramm, Sabrina Loise de Morais Calado, Helena Cristina Silva de Assis, Luiz Laureno Mafra Jr
Summary: The benthic dinoflagellate Prorocentrum lima can produce shellfish toxins that accumulate in bivalve tissues, affecting human consumers. Clams exposed to P. lima cells or toxins showed varying levels of toxin accumulation and detoxification abilities, with antioxidant responses differing depending on toxin concentration. The study suggests that under laboratory conditions, clams do not primarily experience oxidative stress from DST-producing dinoflagellates, but interactions with other stressors should be further studied.
AQUATIC TOXICOLOGY
(2021)
Article
Plant Sciences
Janaina Gomes-da-Silva, Fabiana L. R. Filardi, Maria Regina Barbosa, Jose Fernando A. Baumgratz, Carlos E. M. Bicudo, Taciana B. Cavalcanti, Marcus A. N. Coelho, Andrea F. Costa, Denise P. Costa, Eduardo Couto Dalcin, Paulo Labiak, Haroldo C. Lima, Lucia G. Lohmann, Leonor C. Maia, Vidal F. Mansano, Mariangela Menezes, Marli P. Morim, Carlos Wallace N. Moura, Eimear Nic Lughadha, Denilson F. Peralta, Jefferson Prado, Nadia Roque, Joao Renato Stehmann, Lana S. Sylvestre, Larissa Trierveiler-Pereira, Bruno M. T. Walter, Geraldo Zimbrao, Rafaela C. Forzza
Summary: The shortage of reliable taxonomic data hinders biodiversity research, but recent studies on algae, plants, and fungi in Brazil have demonstrated the country's species richness and endemism. Scientific collaboration has proven to be powerful in achieving ambitious goals.
Article
Health Care Sciences & Services
Cristiane Wanderley Cardoso, Monaise Madalena Oliveira e Silva, Antonio Carlos Bandeira, Renan Bispo Silva, Ana Paula Pitanga Barbuda Prates, Enio Silva Soares, Jose Jorge Moreno Silva, Lazaro Jose Rodrigues de Souza, Mirela Maisa da Silva Souza, Marcela Almeida Muhana, Rosildete Silva Santos Pires, Jose Fernando Araujo Neto, Manuela Sampaio Souza Santos, Luiz Laureno Mafra Junior, Thiago Pereira Alves, Mathias Alberto Schramm, Guilherme Sousa Ribeiro
Summary: From late 2016 to early 2021, cases of Haff disease, a rare cause of rhabdomyolysis, possibly due to poisoning by palytoxin-like compounds in seafood, were detected in Salvador, Brazil. Surveillance was established to investigate the clinical characteristics of the cases and trace the presence of biotoxins and trace metals in fish specimens obtained from cases.
LANCET REGIONAL HEALTH-AMERICAS
(2022)
Article
Water Resources
Marco Antonio Ribeiro Pessoa, Flavio Joaquim de Souza, Patricia Domingos, Jose Paulo Soares de Azevedo
ENGENHARIA SANITARIA E AMBIENTAL
(2020)
