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Microbial processes and biodiversity in aquatic ecosystems


Aquatic ecosystems play an important role in the cycling of energy and matter, and generally present high productivity and biodiversity. In tropical regions, these ecosystems are particularly relevant to biogeochemical cycles. Microorganisms play a central role in CO2 production and consumption processes in these ecosystems. However, little is known about the phylogenetic diversity of these microorganisms and their biotic interaction with other compartments of the planktonic food web, as well as the processes behind the high CO2 emissions observed in tropical aquatic ecosystems. The proposed research will quantify biomass stocks, processes (e.g. production, respiration) and interactions between the different compartments of the planktonic microbial food web in samples from a large number of aquatic environments in the state of São Paulo, and a time series in Broa reservoir. These field data, combined with experiments in controlled laboratory conditions (microcosm) and field experiments (mesocosms), will allow evaluating the influence of classical food chain community structure (phytoplankton, zooplankton and fish) on microbial food web compartments. On the other hand, the study of biodiversity of planktonic microbial communities (prokaryotes and eukaryotes) and the relationships of its dynamics with environmental factors through next generation sequencing techniques (marker genes and metagenomics), will allow a characterization of the community structure and ecological functioning of microbial assemblies, but also obtaining patterns of co-occurrence or covariance between microorganisms and other larger organisms of different food web compartments (allowing the construction of interaction networks). These results will allow testing the robustness of some ecological theories (mainly developed for animals and plants) in microbial systems and clarify the mechanisms behind the high CO2 emissions observed in tropical aquatic ecosystems. This proposal aims to implement a new research line in the DHb (UFSCar), dedicated to the study of ecology and biodiversity of aquatic microorganisms, applying cutting edge methods and technologies such as the application of flow cytometry in the quantification of aquatic microorganisms and single-cell physiological properties, and massive next-generation sequencing techniques to explore the biodiversity of aquatic microorganisms, among others. The strategic goal is to crate a new research group and put it in the frontier of knowledge in this area of research, at the international level. (AU)

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Scientific publications (27)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SARMENTO, HUGO; IZAGUIRRE, IRINA; BECKER, VANESSA; PADISAK, JUDIT; NASELLI-FLORES, LUIGI; HUSZAR, VERA L. M.. Phytoplankton and its biotic interactions: Colin Reynolds' legacy to phytoplankton ecologists. Hydrobiologia, v. 831, n. 1, SI, p. 1-4, . (14/14139-3)
SANTOS-JUNIOR, CELIO DIAS; SARMENTO, HUGO; DE MIRANDA, FERNANDO PELLON; HENRIQUE-SILVA, FLAVIO; LOGARES, RAMIRO. Uncovering the genomic potential of the Amazon River microbiome to degrade rainforest organic matter. MICROBIOME, v. 8, n. 1, . (14/14139-3)
FERRERA, ISABEL; SARMENTO, HUGO; PRISCU, JOHN C.; CHIUCHIOLO, AMY; GONZALEZ, JOSE M.; GROSSART, HANS-PETER. Diversity and Distribution of Freshwater Aerobic Anoxygenic Phototrophic Bacteria across a Wide Latitudinal Gradient. FRONTIERS IN MICROBIOLOGY, v. 8, . (14/14139-3)
PAINA, KARIME DE ARAUJO; GAMA MELAO, MARIA DA GRACA. Zooplankton community structure from tropical temporary ponds during a flood period. LIMNETICA, v. 38, n. 1, p. 189-211, . (16/00753-7, 14/14139-3)
WANDERLEY, BRUNO M. S.; ARAUJO, DANIEL S. A.; QUIROGA, V, MARIA; AMADO, ANDRE M.; NETO, ADRIAO D. D.; SARMENTO, HUGO; METZ, SEBASTIAN D.; UNREIN, FERNANDO. flowDiv: a new pipeline for analyzing flow cytometric diversity. BMC Bioinformatics, v. 20, . (16/50494-8, 14/14139-3)
FREITAS, ROBERTA; VIEIRA, HELENA HENRIQUES; DE MORAES, GUILHERME PAVAN; DE MELO, MICHAELA LADEIRA; HENRIQUES VIEIRA, ARMANDO AUGUSTO; SARMENTO, HUGO. Productivity and rainfall drive bacterial metabolism in tropical cascading reservoirs. Hydrobiologia, v. 809, n. 1, p. 233-246, . (11/50054-4, 14/14139-3)
MATEUS-BARROS, ERICK; MENEGHINE, AYLAN K.; BAGATINI, INESSA LACATIVA; FERNANDES, CAMILA C.; KISHI, LUCIANO T.; VIEIRA, ARMANDO A. H.; SARMENTO, HUGO. Comparison of two DNA extraction methods widely used in aquatic microbial ecology. Journal of Microbiological Methods, v. 159, p. 12-17, . (11/50054-4, 13/18083-0, 14/14139-3, 16/07679-7)
GEBARA, RENAN CASTELHANO; GONCALVES ALHO, LAYS DE OLIVEIRA; DE ABREU, CINTHIA BRUNO; MANSANO, ADRISLAINE DA SILVA; MOREIRA, RAQUEL APARECIDA; ROCHA, GISELI SWERTS; GAMA MELAO, MARIA DA GRACA. Toxicity and Risk Assessment of Zinc and Aluminum Mixtures to Ceriodaphnia silvestrii (Crustacea: Cladocera). Environmental Toxicology and Chemistry, v. 40, n. 10, . (17/24126-4, 18/07988-5, 14/14139-3)
CHAFFRON, SAMUEL; DELAGE, ERWAN; BUDINICH, MARKO; VINTACHE, DAMIEN; HENRY, NICOLAS; NEF, CHARLOTTE; ARDYNA, MATHIEU; ZAYED, AHMED A.; JUNGER, PEDRO C.; GALAND, PIERRE E.; et al. Environmental vulnerability of the global ocean epipelagic plankton community interactome. SCIENCE ADVANCES, v. 7, n. 35, . (17/26786-1, 14/14139-3)
GONSALVES ALHO, LAYS DE OLIVEIRA; GEBARA, RENAN CASTELHANO; PAINA, KARIME DE ARAUJO; SARMENTO, HUGO; GAMA MELDO, MARIA DA GRACA. Responses of Raphidocelis subcapitata exposed to Cd and Pb: Mechanisms of toxicity assessed by multiple endpoints. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, v. 169, p. 950-959, . (14/14139-3, 16/00753-7)
FERMANI, PAULINA; METZ, SEBASTIAN; BALAGUE, VANESSA; DESCY, JEAN PIERRE; MORANA, CEDRIC; LOGARES, RAMIRO; MASSANA, RAMON; SARMENTO, HUGO. Microbial eukaryote assemblages and potential novel diversity in four tropical East African Great Lakes. FEMS MICROBIOLOGY ECOLOGY, v. 97, n. 9, . (14/14139-3)
GONCALVES ALHO, LAYS DE OLIVEIRA; SOUZA, JAQUELINE PEROLA; ROCHA, GISELI SWERTS; MANSANO, ADRISLAINE DA SILVA; LOMBARDI, ANA TERESA; SARMENTO, HUGO; GAMA MELAO, MARIADA GRACA. Photosynthetic, morphological and biochemical biomarkers as tools to investigate copper oxide nanoparticle toxicity to a freshwater chlorophyceae. Environmental Pollution, v. 265, n. A, . (18/07988-5, 16/00753-7, 14/14139-3)
BARRETO FILHO, MARCELO M.; DURAND, PIERRE M.; ANDOLFATO, NATHAN E.; JORDAAN, ANINE; SARMENTO, HUGO; BAGATINI, INESSA L.. Programmed cell death in the coccoid green microalga Ankistrodesmus densus Korshikov (Sphaeropleales, Selenastraceae). European Journal of Phycology, . (14/14139-3)
GEBARA, RENAN CASTELHANO; SOUZA, JAQUELINE PEROLA; MANSANO, ADRISLAINE DA SILVA; SARMENTO, HUGO; GAMA MELAO, MARIA DA GRACA. Effects of iron oxide nanoparticles (Fe3O4) on life history and metabolism of the Neotropical cladoceran Ceriodaphnia silvestrii. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, v. 186, . (16/00753-7, 14/14139-3)
DE LUCCA, GISELE MARIA; FREITAS, EMANUELA CRISTINA; GAMA MELAO, MARIA DA GRACA. Effects of TiO2 Nanoparticles on the Neotropical Cladoceran Ceriodaphnia silvestrii by Waterborne and Dietary Routes. WATER AIR AND SOIL POLLUTION, v. 229, n. 9, . (16/00753-7, 14/14139-3)
SEGOVIA, BIANCA T.; DOMINGUES, CAROLINA D.; MEIRA, BIANCA R.; LANSAC-TOHA, FERNANDO M.; FERMANI, PAULINA; UNREIN, FERNANDO; LOBAO, LUCIA M.; ROLANDO, FABIO; VELHO, LUIZ F. M.; SARMENTO, HUGO. Coupling Between Heterotrophic Nanoflagellates and Bacteria in Fresh Waters: Does Latitude Make a Difference?. FRONTIERS IN MICROBIOLOGY, v. 7, . (14/14139-3)
MAIARA MENEZES; PEDRO C. JUNGER; VINICIUS S. KAVAGUTTI; BRUNO WANDERLEY; ANDERSON DE SOUZA CABRAL; RODOLFO PARANHOS; FERNANDO UNREIN; ANDRÉ M. AMADO; HUGO SARMENTO. Temporal patterns of picoplankton abundance and metabolism on the western coast of the equatorial Atlantic Ocean. Ocean and Coastal Research, v. 71, . (14/14139-3, 16/50494-8, 17/26786-1)
TOYAMA, D.; SANTOS-JUNIOR, C. D.; KISHI, L. T.; OLIVEIRA, T. C. S.; GARCIA, J. W.; SARMENTO, H.; MIRANDA, F. P.; HENRIQUE-SILVA, F.. A snapshot on prokaryotic diversity of the Solimoes River basin (Amazon, Brazil). Genetics and Molecular Research, v. 16, n. 2, . (14/14139-3)
DE MELO, MICHAELA L.; BERTILSSON, STEFAN; AMARAL, JOAO HENRIQUE F.; BARBOSA, PEDRO M.; FORSBERG, BRUCE R.; SARMENTO, HUGO. Flood pulse regulation of bacterioplankton community composition in an Amazonian floodplain lake. Freshwater Biology, v. 64, n. 1, p. 108-120, . (14/14139-3)
SARMENTO, HUGO; MORANA, CEDRIC; GASOL, JOSEP M.. Bacterioplankton niche partitioning in the use of phytoplankton-derived dissolved organic carbon: quantity is more important than quality. ISME Journal, v. 10, n. 11, p. 2582-2592, . (14/14139-3)
MATEUS-BARROS, ERICK; DE MELO, MICHAELA L.; BAGATINI, INESSA L.; CALIMAN, ADRIANO; SARMENTO, HUGO. Local and Geographic Factors Shape the Occupancy-Frequency Distribution of Freshwater Bacteria. MICROBIAL ECOLOGY, v. 81, n. 1, . (11/50054-4, 14/14139-3)
GEBARA, RENAN CASTELHANO; GONCALVES ALHO, LAYS DE OLIVEIRA; ROCHA, GISELI SWERTS; MANSANO, ADRISLAINE SILVA; GAMA MELAO, MARIA GRACA. Zinc and aluminum mixtures have synergic effects to the algae Raphidocelis subcapitata at environmental concentrations. Chemosphere, v. 242, . (16/00753-7, 14/14139-3, 18/07988-5)
AMARAL, JOAO HENRIQUE F.; BORGES, ALBERTO V.; MELACK, JOHN M.; SARMENTO, HUGO; BARBOSA, PEDRO M.; KASPER, DANIELE; DE MELO, MICHAELA L.; DE FEX-WOLF, DANIELA; DA SILVA, JONISMAR S.; FORSBERG, BRUCE R.. Influence of plankton metabolism and mixing depth on CO2 dynamics in an Amazon floodplain lake. Science of The Total Environment, v. 630, p. 1381-1393, . (14/14139-3)
SARMENTO, HUGO; CASAMAYOR, EMILIO O.; AUGUET, JEAN-CHRISTOPHE; VILA-COSTA, MARIA; FELIP, MARISOL; CAMARERO, LLUS; GASOL, JOSEP M.. Microbial food web components, bulk metabolism, and single-cell physiology of piconeuston in surface microlayers of high-altitude lakes. FRONTIERS IN MICROBIOLOGY, v. 6, . (14/14139-3)
SEGOVIA, BIANCA TREVIZAN; MEIRA, BIANCA RAMOS; LANSAC-TOHA, FERNANDO MIRANDA; AMADEO, FELIPE EMILIANO; UNREIN, FERNANDO; MACHADO VELHO, LUIZ FELIPE; SARMENTO, HUGO. Growth and cytometric diversity of bacterial assemblages under different top-down control regimes by using a size-fractionation approach. Journal of Plankton Research, v. 40, n. 2, p. 129-141, . (16/50494-8, 14/14139-3)
COSTA, MARIANA R. A.; MENEZES, ROSEMBERG F.; SARMENTO, HUGO; ATTAYDE, JOSE L.; STERNBERG, LEONEL DA S. L.; BECKER, VANESSA. Extreme drought favors potential mixotrophic organisms in tropical semi-arid reservoirs. Hydrobiologia, v. 831, n. 1, SI, p. 43-54, . (16/50494-8, 14/14139-3)

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