Article
Environmental Sciences
Feijian Mao, Wenxuan Li, Zhi Yang Sim, Yiliang He, Qiuwen Chen, Karina Yew-Hoong Gin
Summary: Cyanobacterial blooms pose a challenge to safe water supply in estuary reservoirs. This study investigated the biweekly abundances and dynamics of picoand nano-phytoplankton in a tropical estuary lake after a prolonged bloom event. The results showed that turbidity played an important role in the formation of the current blooms.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Mehdi Moslemi-Aqdam, George Low, Mike Low, Brian D. Laird, Brian A. Branfireun, Heidi K. Swanson
Summary: The biomagnification of mercury in lake food webs was investigated in ten remote subarctic lakes in Northwest Territories, Canada. The study found significant biomagnification of mercury through the food webs of all lakes and identified forest cover as a key environmental driver of mercury biomagnification.
ENVIRONMENTAL RESEARCH
(2023)
Article
Hematology
Seth E. Karol, Elaine Coustan-Smith, Stanley Pounds, Lei Wang, Hiroto Inaba, Raul C. Ribeiro, Ching-Hon Pui, Jeffery M. Klco, Jeffrey E. Rubnitz
Summary: The prognostic significance of bone marrow minimal residual disease (MRD) in pediatric patients with acute myeloid leukemia (AML) is well characterized. However, the impact of blood MRD is not known. In this study, flow cytometric assessment of leukemia-specific immunophenotypes was used to measure levels of MRD in both the blood and bone marrow of patients treated in a clinical trial. Results showed that day-8 blood MRD was highly predictive of the outcome among patients who tested as having MRD-positive bone marrow on day 22, suggesting its potential as a tool for early identification and treatment of high-risk patients.
Article
Environmental Sciences
Melilotus Thyssen, Gerald Gregori, Veronique Creach, Soumaya Lahbib, Mathilde Dugenne, Hedy M. Aardema, Luis-Felipe Artigas, Bangqin Huang, Aude Barani, Laureen Beaugeard, Amel Bellaaj-Zouari, Alfred Beran, Raffaella Casotti, Yolanda Del Amo, Michel Denis, George B. J. Dubelaar, Sonja Endres, Lumi Haraguchi, Bengt Karlson, Christophe Lambert, Arnaud Louchart, Dominique Marie, Gwenaelle Moncoiffe, David Pecqueur, Francois Ribalet, Machteld Rijkeboer, Tina Silovic, Ricardo Silva, Sophie Marro, Heidi M. Sosik, Marc Sourisseau, Glen Tarran, Nicolas Van Oostende, Li Zhao, Shan Zheng
Summary: The recent development of biological sensors has expanded marine plankton studies by enabling in vivo and real-time observations. Flow cytometry has been a valuable tool for analyzing marine microorganisms since the 1980s, providing single-cell analysis and detection of small cells. However, there is a lack of standards in classifying and grouping cells, which hinders data sharing. In this paper, the authors propose a consensus vocabulary and layout for flow cytometry analysis, aiming to standardize data analysis and promote data harmonization and comparison among users and instruments.
FRONTIERS IN MARINE SCIENCE
(2022)
Review
Biochemical Research Methods
Julian N. Rosenberg, Nathaniel C. Cady
Summary: This review discusses novel approaches to discerning the metabolic, morphological, and mechanistic hallmarks of living systems, including the use of fluorescent probes, viability PCR, and label-free biosensors in the field of cell viability.
CURRENT OPINION IN BIOTECHNOLOGY
(2021)
Article
Environmental Sciences
Stephanie D. Graves, Karsten Liber, Vince Palace, Markus Hecker, Lorne E. Doig, David M. Janz
Summary: This study investigated the trophic dynamics of selenium in a Canadian boreal lake ecosystem along a gradient of exposure concentrations, revealing nonlinear bioaccumulation of selenium by organisms and taxonomic differences in selenium accumulation. Field-derived models for selenium uptake by algae and invertebrates were developed, contributing to a better understanding of selenium bioaccumulation dynamics over exposure concentrations in cold-water lentic systems.
ENVIRONMENTAL POLLUTION
(2021)
Article
Food Science & Technology
Elena Zand, Antje Froehling, Christoph Schoenher, Marija Zunabovic-Pichler, Oliver Schlueter, Henry Jaeger
Summary: Microbial contamination in food and bioindustries is a persistent issue, and current methods for detection and characterization have limitations. Flow cytometry (FCM) and fluorescence in situ hybridization (FISH) are seen as potential solutions to overcome these limitations, but there are challenges, including the use of toxic and mutagenic fluorochromes and probes. Further research is needed to enhance FCM and FISH as monitoring and detection tools for food quality and safety.
Article
Marine & Freshwater Biology
Kathryn Sweeney, Gretchen Rollwagen-Bollens, Stephanie E. Hampton
Summary: Grazing by microzooplankton has a significant impact on freshwater cyanobacteria blooms, but the contribution of rotifers to this effect is not well understood. This study found that the grazing impact of microzooplankton on phytoplankton biomass was exceptionally high just days after a large bloom, while the impact by rotifers was low. As the bloom diminished, the grazing impact of rotifers increased dramatically, specifically consuming dinoflagellate and ciliate biomass. The presence of large, carnivorous Asplanchna spp. in Vancouver Lake indicates multi-trophic grazing dynamics within the rotifer assemblage.
Article
Fisheries
Antonio Bode, M. Pilar Olivar, Cristina Lopez-Perez, Santiago Hernandez-Leon
Summary: This study utilized stable isotope analysis of amino acids to quantify the contributions of microbial vs. metazoan food webs in Stomiiformes fish species, challenging current understanding of marine food webs and providing a new quantitative tool for their analysis.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Environmental Sciences
Junda Ren, Adam D. Point, Sadjad Fakouri Baygi, Sujan Fernando, Philip K. Hopke, Thomas M. Holsen, Bernard S. Crimmins
Summary: PFAS, such as PFOS and PFCA, are widely present in the Laurentian Great Lakes and exhibit biomagnification in the aquatic food web, with higher concentrations detected in predators. Isotope enrichment and fatty acid profiling were used to study trophic dynamics and PFAS transfer pathways, revealing PFAS biomagnification factors greater than 1 for most C8-C14 PFAS. Trophic magnification factors of C8-C14 PFCA were found to be independent of compound hydrophobicity.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Microbiology
Steven B. Kuzyk, Xiao Ma, Vladimir Yurkov
Summary: This first comprehensive study of Lake Winnipeg's microbial communities examines the seasonal variations in the limnetic and littoral euphotic zones. The research shows that aerobic anoxygenic phototrophs (AAP) peak in the spring and decrease as the season progresses. The spatial and temporal fluctuations of microbial populations compared to environmental factors reveal that phototrophic populations independently and regularly fluctuate in the ecosystem.
Review
Environmental Sciences
Xinyi Cai, Huili Chen, Bei Huang, Jianbo Lu
Summary: China is the largest producer and consumer of plastics globally. Microplastic pollution has become a significant research topic in the field of environmental science and ecology. This study analyzes the statistical data on microplastics in 86 lakes across China's lake ecosystems over the past five years. The results show significant correlations between microplastic abundance and factors such as lake area, GDP, urban waste water discharge, and ratio of agricultural land area. The dominant types of microplastics are transparent fragments, films, and fibers, with sizes mostly smaller than 2 mm and major polymers being PE, PP, and PS. The degree of microplastic pollution in organisms is related to the level of environmental pollution.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Environmental Sciences
Zhengzhu Dang, Zhongxin Luo, Shuo Wang, Yinhao Liao, Zhuo Jiang, Xianfang Zhu, Guodong Ji
Summary: The microbial food web (MFW) in lake water ecosystems was divided into three categories through the analysis of its structure and trophic transfer efficiency, showing changes during the lake melt period. The trophic transfer efficiency of MFW increased with the input of exogenous debris and organic pollutants. The different types of MFW had varying levels of complexity and stability in their trophic structures, impacting the overall ecological health of the lake water ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Luka Vucinic, David O'Connell, Rui Teixeira, Catherine Coxon, Laurence Gill
Summary: Microbial pollution of aquifers is a global water quality problem that poses significant risks to public health. This study utilized flow cytometric analysis and fecal indicator bacteria to assess the potential of providing faster and more descriptive information on microbial pollution in karst aquifers. The study also evaluated the use of turbidity as a proxy indicator for fecal groundwater contamination. The findings suggest that flow cytometry can provide additional insights into fecal pollution sources and its fate and transport in karst catchments.
WATER RESOURCES RESEARCH
(2022)
Article
Environmental Sciences
W. Yang, X. T. Fu, X. X. Li, B. S. Cui, X. A. Yin
Summary: This study investigated the food web structure and topology of the river-lake ecotone in Baiyangdian Lake, the largest shallow lake in northern China. The results showed that the food web changed from detritus-based to phytoplankton-based along the gradient from the river to the lake, and the lake ecosystem had a more diverse species assemblage and complex food web structure compared to the river ecosystem.
JOURNAL OF ENVIRONMENTAL INFORMATICS
(2023)
Article
Marine & Freshwater Biology
Maisa Carvalho Vieira, Jean C. G. Ortega, Ludgero Cardoso Galli Vieira, Luiz Felipe Machado Velho, Luis Mauricio Bini
Summary: The study found that river damming can lead to biotic differentiation in zooplankton beta diversity, as different hydrological conditions can affect the colonization and population growth of different species groups.
Article
Marine & Freshwater Biology
Bianca Ramos Meira, Felipe Rafael Oliveira, Fernando Miranda Lansac-Toha, Bianca Trevizan Segovia, Melissa Progenio, Fabio Amodeo Lansac-Toha, Luiz Felipe Machado Velho
Summary: This study investigated the role of ciliate protists as a food resource in different stages of Astyanax lacustris fish larvae development, showing that they are particularly important in the early stages of development.
Article
Limnology
L. M. A. Elmoor-Loureiro, F. D. R. Sousa, F. R. Oliveira, C. Y. Joko, G. Perbiche-Neves, A. C. S. da Silva, A. J. Silva, A. R. Ghidini, B. R. Meira, C. E. G. Aggioj, C. S. Morais-Junior, E. M. Eskinazi-Sant'Anna, F. M. Lansac-Toha, G. S. Cabral, J. L. Portinho, J. R. Nascimento, J. V. F. Silva, L. Veado, L. J. Chiarelli, L. O. Santana, L. P. Diniz, L. S. M. Braghin, L. T. F. Schwind, M. Melo Junior, M. Progenio, M. A. Rocha, M. L. C. Silva, M. S. M. Castilho-Noll, N. J. Silva, N. G. dos Santos, P. H. R. Morari, P. M. Maia-Barbosa, P. M. Oliveira, R. L. Arrieira, R. L. Macedo, S. Deosti, T. Mantovanoj, V. Gazulha, C. C. Bonecker, F. A. Lansac-Toha, P. H. C. Corgosinhot, L. F. M. Velho, N. R. Simoesn
Summary: Although Brazil is a megadiverse country, there is still limited knowledge about freshwater biodiversity. This study provides a general overview of Protozoa, Rotifera, Cladocera, and Copepoda species and their distribution in Brazilian Hydrographic Regions based on literature data since the 1890s. The results reveal high species richness and uneven distribution of occurrence records, influenced by research groups' location. The study highlights the need for further taxonomic studies on Brazilian zooplankton biodiversity.
Article
Ecology
Thierry A. Pellegrinetti, Simone R. Cotta, Hugo Sarmento, Juliana S. Costa, Endrews Delbaje, Celia R. Montes, Plinio B. Camargo, Laurent Barbiero, Ary T. Rezende-Filho, Marli F. Fiore
Summary: This study investigated the effects of different environmental conditions on bacterial communities and their functioning in six adjacent soda lakes in the Pantanal biome, Brazil. The results showed that the lakes could be classified into three types based on wet and dry season data, and the bacterial community composition and functioning were consistent with this classification. The study also found that microbial abundance and diversity increased during the dry period, indicating the importance of precipitation-evaporation balance in these systems. The microbiome dataset of this study can serve as a baseline for restoring impacted soda lakes. The study highlights the sensitivity of tropical soda lakes to climate change and the potential for drastic shifts in community diversity.
Article
Ecology
Cedric Morana, Alberto Borges, Loris Deirmendjian, William Okello, Hugo Sarmento, Jean-Pierre Descy, Ismael A. Kimirei, Steven Bouillon
Summary: Non-humic African lakes tend to be more autotrophic than expected, with a lower equilibrium point between primary production (PP) and community respiration (CR) compared to lakes in boreal and temperate regions. The burial of organic carbon in sediments is significantly lower in these lakes, suggesting a higher recycling rate of primary production in the warm water column. Integrated at the regional scale, PP is estimated to be about 20 times higher than organic carbon burial.
Article
Microbiology
Helena Henriques Vieira, Inessa Lacativa Bagatini, Guilherme Pavan de Moraes, Roberta Mafra Freitas, Hugo Sarmento, Stefan Bertilsson, Armando Augusto Henriques Vieira
Summary: The turnover of microbial communities is influenced by local and regional factors. Local factors shape community assembly through biological interactions and the environment, while regional factors affect microbial dispersion patterns. This study investigated the turnover processes of three microbial subcommunities in a tropical freshwater reservoir cascade during dry and rainy seasons. The results showed that both local and regional factors played a role in community composition, with different influences in each season.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Multidisciplinary Sciences
Sebastian Metz, Paula Huber, Erick Mateus-Barros, Pedro C. Junger, Michaela de Melo, Inessa Lacativa Bagatini, Irina Izaguirre, Mariana Camara dos Reis, Maria E. Llames, Victoria Accattatis, Maria Victoria Quiroga, Melina Devercelli, Maria Romina Schiaffino, Juan Pablo Nino-Garcia, Marcela Bastidas Navarro, Beatriz Modenutti, Helena Vieira, Martin Saraceno, Carmen Alejandra Sabio Y. Garcia, Emiliano Pereira, Alvaro Gonzalez-Revello, Claudia Piccini, Fernando Unrein, Cecilia Alonso, Hugo Sarmento
Summary: This article presents a study on microbial communities in continental water ecosystems in South America. The authors compiled a database called SudAqua, which includes high-resolution samples and environmental information from different ecoregions in South America. They also constructed a curated database called mu SudAqua[db.sp] for data integration and validation.
Review
Limnology
Maria Stela Maioli Castilho-Noll, Gilmar Perbiche-Neves, Natan Guilherme dos Santos, Leilane Talita Fatoreto Schwind, Fernando Miranda Lansac-Toha, Alan Cleber Santos da Silva, Bianca Ramos de Meira, Ciro Yoshio Joko, Claudio Simoes de Morais-Junior, Edissa Emi Cortez Silva, Eneida Maria Eskinazi-Sant'Anna, Felipe Rafael Oliveira, Gleice de Souza Santos, Joao Vitor Fonseca da Silva, Jorge Laco Portinho, Karime de Araujo-Paina, Laura Jardim Chiarelli, Leidiane Pereira Diniz, Louizi de Souza Magalha Braghin, Luiz Felipe Machado Velho, Maria Eduarda Turcato de Souza, Mariana Lessa Carneiro da Silva, Mariane Amorim Rocha, Melissa Progenio, Natalia Ferreira, Pedro Henrique Cirillo, Pedro Henrique Ribeiro Morari, Rodrigo Leite Arrieira, Tatiane Mantovano, Vanessa Gazulha, Viviane Lucia dos Santos Almeida de Melo, Andre Ricardo Ghidini, Mauro de Melo Junior, Fabio Amodeo Lansac-Toha, Claudia Costa Bonecker, Nadson Ressye Simoes
Summary: In this study, a review was conducted on freshwater zooplankton in Brazil from 1900 to 2021, based on 1014 studies, and the main trends were identified. The number of studies increased significantly from the 1990s onwards, particularly between 2016 and 2020. Most studies focused on ecological and taxonomical research. Field studies were more common than experimental and review studies, but the latter type also showed an increase between 2016 and 2020. Limnetic regions, artificial and natural lakes were the most studied environments, while littoral regions, streams, and wetlands received less attention.
Article
Environmental Sciences
Darshika Manral, Doroteaciro Iovino, Olivier Jaillon, Simona Masina, Hugo Sarmento, Daniele Iudicone, Linda Amaral-Zettler, Erik van Sebille
Summary: Ocean currents play a crucial role in the dispersal of plankton across the oceanic basins. However, temperature constraints specific to each species may limit their dispersal. This study proposes a methodology that combines Lagrangian modeling with network theory to estimate connectivity pathways and timescales for plankton species based on temperature tolerances. The findings suggest that while non-constrained passive particles can connect all sample stations within three years along major ocean currents, the establishment of connectivity is limited under thermal constraints. The study also highlights the impact of advection depth, thermal constraints, and changes in pathways on plankton connectivity.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Biodiversity Conservation
Matheus Henrique Ferreira Aleixo, Fernanda Moreira Florencio, Fernando Miranda Lansac-Toha, Barbara Angelio Quirino, Rosemara Fugi
Summary: This study examined the effects of environmental and biological factors on the beta-diversity components of fish communities in the Upper Parana River floodplain in Brazil. It found that environmental factors influenced the replacement component, while biotic factors influenced the richness component. The study also emphasized the impact of species diversity on beta-diversity.
BIOLOGICAL INVASIONS
(2023)
Article
Fisheries
Atsler Luana Lehun, Joao Otavio Santos Silva, Gabriela Michelan, Fernando Miranda Lansac-Toha, Lidiany Doreto Cavalcanti, Ricardo Massato Takemoto
Summary: The structure of the food chain plays a crucial role in shaping the relationship between trophically transmitted endoparasites. The position and body size of each fish species in the food web can determine the presence and transmission of parasites. By analyzing a helminth dataset from 70 fish species in the upper Parana River floodplain, we found that the richness of fish parasites, both in the larval and adult stages, can be explained by body size and trophic level.
ECOLOGY OF FRESHWATER FISH
(2023)
Article
Ecology
Barbara Angelio Quirino, Martin Sondergaard, Torben Linding Lauridsen, Liselotte Sander Johansson, Rosemara Fugi, Sidinei Magela Thomaz, Fernando Miranda Lansac-Toha, Erik Jeppesen
Summary: Fish community structure in shallow lakes is influenced by macrophyte cover, which provides important habitats and food sources. This study examined the relationships between fish and macrophytes at both lake and point scales in 88 Danish shallow lakes. The results showed negative relationships between macrophyte cover and fish abundance and biomass, with stronger effects at the point scale. Chlorophyll a, a measure of primary productivity, was positively related to fish abundance, except for certain fish species. The findings highlight the complex interactions between fish and macrophytes, which are influenced by lake characteristics.
FRESHWATER BIOLOGY
(2023)
Article
Ecology
Melissa Progenio, Pablo A. P. Antiqueira, Felipe R. Oliveira, Bianca R. Meira, Fernando M. Lansac-Toha, Luzia C. Rodrigues, Gustavo Q. Romero, Liam N. Nash, Pavel Kratina, Luiz F. M. Velho
Summary: An experiment was conducted to test the impacts of predicted future warming on freshwater aquatic communities. The results showed that warming strongly structures freshwater communities and enhances beta-diversity. These effects are influenced by habitat size and detrital resources.
ECOLOGY AND EVOLUTION
(2023)
Article
Marine & Freshwater Biology
Maiara Menezes, Pedro C. Junger, Vinicius S. Kavagutti, Bruno Wanderley, Anderson de Souza Cabral, Rodolfo Paranhos, Fernando Unrein, Andre M. Amado, Hugo Sarmento
Summary: This study examines the temporal variation in abundance and carbon flux of picoplanktonic community, as well as their environmental drivers, in a low-latitude Atlantic coastal station. The study finds that picoplankton exhibit stability in temporal dynamics despite considerable inter-annual variation, with potential influence from biological interactions. Heterotrophic bacteria dominate the picoplankton community, and Synechococcus shows greater importance than picoeukaryotes.
OCEAN AND COASTAL RESEARCH
(2023)