Publications by authors named "J Colombet"
To investigate the hypothesis of top-down control by viruses and heterotrophic nanoflagellates on bacterial-mediated carbon fluxes in freshwater systems, a year-long study (2023-2024) was conducted in the pelagic zone of Lake Saint-Gervais (France). The variability in BGE (9.9% to 45.
View Article and Find Full Text PDFThe smallest entities in aquatic ecosystems, i.e., femtoplankton, are certainly the largest reservoir of uncharacterized biodiversity.
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- High-throughput sequencing has revealed a vast variety of microbial eukaryotes in aquatic ecosystems, particularly in freshwater lakes, but their roles in food webs are still not well understood.
- Research conducted in Lake Pavin, France, utilized metabarcoding and metatranscriptomic data to identify functional groups of these microbial eukaryotes and their metabolic activities across different environmental conditions.
- Findings indicated significant microbial diversity, with numerous saprotrophs involved in nutrient cycling and seasonal variations affecting types of microbial eukaryotes, particularly highlighting the impact of water mixing on both beneficial and parasitic organisms.
The development of new technologies of microscopy, flow cytometry and genomics has allowed a profound reconsideration of the diversity and ecological role of femtoplankton entities (i.e., viruses, vesicles, aster like nanoparticles -ALNs-).
View Article and Find Full Text PDFA nearly complete genome sequence of enterovirus type A119 was determined from an urban wastewater sample collected during a surveillance campaign in 2015 in Clermont-Ferrand, France. The partial VP1 sequence is a close relative of other partial enterovirus type A119 sequences detected in France and South Africa in the same year.
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