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May 4, 2020 · For example, Marine Group II and III (MG-II and MG-III; now referred to as Poseidoniales and Pontarchaea) Archaea occasionally constitute a large fraction (at times up to 40%) of marine microbial ...
Jan 30, 2024 · Chemosynthesis is a metabolic process that transfers carbon to the biosphere using reduced compounds. It is well recognised that chemosynthesis occurs in much of the ocean, but it is often thought to be a negligible process compared to photosynthesis. Here we propose that chemosynthesis is the underlying process governing primary production in much of the ocean and suggest that it extends to a ...
Main. Microbial oceanography is a new discipline that integrates the principles of marine microbiology, microbial ecology and oceanography to study the role of microorganisms in the biogeochemical ...
Apr 10, 2006 · Marine environments. Archaea are present in cold marine waters and sea ice, and can represent an important fraction of the microbial population in coastal, open ocean and deep-sea waters 21,22,23 ...
Dec 1, 2007 · The intensely colonized marine-snow aggregates create hot spots of life, and the death of bacteria, viruses (decay), protozoa and metazoa — thus having substantial roles in the structuring of ...
Jan 13, 2021 · Members of the domain Archaea are now known to have diversified and radiated into a variety of disparate habitats in both aquatic freshwater, marine, and terrestrial environments. When the Archaea were first recognized via phylogenetic analyses of ribosomal RNA sequences of pure cultures ( Woese and Fox, 1977; Woese, 1987 ), they appeared at ...
Mar 3, 2021 · Archaeal community composition shown by 16S rRNA gene analyses. Clonal composition of the sediment samples, the mixed cells extracted from the sediment samples, and the cell-size fractions (a), and clonal compositions of the > 0.8 μm fraction (b), the 0.6–0.8 μm fraction (c), and the 0.2–0.6 μm fraction (d) after four months’ enrichment with addition of diverse substrates.
