Global Ocean Microbiome

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Global Ocean Microbiome

The Global Ocean Microbiome is the assemblage of microbial life inhabiting the world's oceans, including bacteria, archaea, viruses, protists, and microeukaryotes, central to planetary biogeochemistry and marine food webs. It links processes studied by James Cook-era voyagers, modern programs like the Census of Marine Life and the Global Ocean Observing System, and modeling efforts at institutions such as the Scripps Institution of Oceanography and the Woods Hole Oceanographic Institution. Research on the microbiome intersects with expeditions like the HMS Challenger expedition and initiatives such as the Tara Oceans project and the Malaspina Expedition.

Overview and Definitions

The term frames a global-scale perspective rooted in historical surveys by the HMS Challenger expedition and contemporary syntheses by networks including the International Ocean Discovery Program and the UN Decade of Ocean Science for Sustainable Development. Definitions draw on taxonomic frameworks from the International Code of Nomenclature for algae, fungi, and plants and the International Code of Nomenclature of Prokaryotes, and on sequence-based standards advanced by the National Center for Biotechnology Information and the European Molecular Biology Laboratory. Conceptual foundations link to ecological theory formulated by Charles Darwin and population genetics influenced by Sewall Wright.

Ocean microbial diversity spans clades characterized by taxonomists associated with institutions like the Smithsonian Institution and the Royal Society. Dominant bacterial groups include Prochlorococcus and SAR11 clade lineages first contextualized by researchers at MBARI and the Scripps Institution of Oceanography, while archaeal diversity features members of the Thaumarchaeota and Euryarchaeota reported in surveys coordinated with the Alfred Wegener Institute. Viral constituents include bacteriophages studied in laboratories such as the Pasteur Institute and microeukaryotes cataloged by curators at the Natural History Museum, London and the National Museums Scotland. Taxonomic inventories are integrated with repositories like the GenBank and databases managed by the European Nucleotide Archive.

Microbes mediate elemental cycles central to frameworks developed at the Max Planck Society and modeled by groups at the Princeton University and the University of Cambridge. Photosynthetic picoplankton such as Prochlorococcus contribute to primary production quantified in analyses from the LAMont–Doherty Earth Observatory, while nitrifiers within Thaumarchaeota drive nitrification processes studied by teams at the Woods Hole Oceanographic Institution. Viral lysis impacts carbon export conceptualized in the biological pump literature and advanced by researchers affiliated with the Monterey Bay Aquarium Research Institute. Methane-cycling microbes link to work on gas hydrates by the U.S. Geological Survey and to climate assessments by the Intergovernmental Panel on Climate Change.

Patterns of microbial distribution have been mapped by voyages like Tara Oceans and programs such as the Global Ocean Survey, revealing biogeographic provinces related to oceanographic features studied by the National Oceanic and Atmospheric Administration and the European Space Agency. Temporal dynamics, including seasonal succession observed in the North Atlantic Bloom and decadal changes monitored by the Station ALOHA time series and the Bermuda Atlantic Time-series Study, reflect influences described in work from the Scripps Institution of Oceanography and climate projections produced by the Met Office Hadley Centre.

Methodological advances pioneered by laboratories at the Broad Institute and the European Molecular Biology Laboratory include metagenomics, metatranscriptomics, and single-cell genomics using platforms from Illumina and Pacific Biosciences. Remote sensing integration employs satellites managed by the National Aeronautics and Space Administration and the European Space Agency, and in situ sampling relies on vessels like the RRS James Cook and autonomous platforms developed at the Woods Hole Oceanographic Institution and Scripps Institution of Oceanography. Analytical frameworks incorporate bioinformatics tools from the National Center for Biotechnology Information and modeling approaches used at the Lawrence Berkeley National Laboratory.

Microbial networks reflect interactions studied by ecologists connected to the Royal Society and the Max Planck Society, including symbioses with phytoplankton described in work on diatoms and dinoflagellates at the Scripps Institution of Oceanography and parasitic relationships investigated by researchers at the Smithsonian Institution. Trophic interactions cascade to higher taxa such as copepods and krill central to fisheries science at the Food and Agriculture Organization and to ecosystem services assessed by the United Nations Environment Programme. Co-occurrence and network inference methods are applied by groups at the European Bioinformatics Institute and the Broad Institute.

Anthropogenic influences on the ocean microbiome are evaluated in assessments by the Intergovernmental Panel on Climate Change and policy forums within the United Nations. Impacts include warming driven by scenarios modeled by the IPCC, nutrient loading documented by the United States Environmental Protection Agency, and plastic-associated microbes studied by teams affiliated with the Monterey Bay Aquarium Research Institute and the Woods Hole Oceanographic Institution. Conservation responses intersect with initiatives like the Convention on Biological Diversity and the UN Decade of Ocean Science for Sustainable Development, with management informed by research from the Scripps Institution of Oceanography, the Woods Hole Oceanographic Institution, and international collaborations such as Tara Oceans.

Category:Marine microbiology Category:Oceanography Category:Microbial ecology