J
J. Michael Beman
Researcher at University of California, Merced
Publications - 36
Citations - 6306
J. Michael Beman is an academic researcher from University of California, Merced. The author has contributed to research in topics: Nitrification & Archaea. The author has an hindex of 22, co-authored 33 publications receiving 5465 citations. Previous affiliations of J. Michael Beman include University of Hawaii & University of Southern California.
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Journal ArticleDOI
Ubiquity and diversity of ammonia-oxidizing archaea in water columns and sediments of the ocean
Christopher A. Francis,Kathryn J. Roberts,J. Michael Beman,Alyson E. Santoro,Brian B. Oakley +4 more
TL;DR: Using PCR primers designed to specifically target archaeal amoA, AOA is found to be pervasive in areas of the ocean that are critical for the global nitrogen cycle, including the base of the euphotic zone, suboxic water columns, and estuarine and coastal sediments.
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New processes and players in the nitrogen cycle: the microbial ecology of anaerobic and archaeal ammonia oxidation.
TL;DR: What is currently known about the microbial ecology of anaerobic and archaeal ammonia oxidation is reviewed, relevant unknowns are highlighted, and the implications of these discoveries for the global nitrogen and carbon cycles are discussed.
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Marine bacterial, archaeal and protistan association networks reveal ecological linkages.
Joshua A. Steele,Peter D. Countway,Li C. Xia,Patrick D. Vigil,J. Michael Beman,Diane Y. Kim,Cheryl-Emiliane T. Chow,Rohan Sachdeva,Adriane C. Jones,Michael S. Schwalbach,Julie M. Rose,Ian Hewson,Anand Patel,Fengzhu Sun,David A. Caron,Jed A. Fuhrman +15 more
TL;DR: The analysis revealed a progression of microbial communities through time, and also a group of unknown eukaryotes that were highly correlated with dinoflagellates, indicating possible symbioses or parasitism, and a network generated from these statistical correlations provides new insights into the natural history of microbes.
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Agricultural runoff fuels large phytoplankton blooms in vulnerable areas of the ocean
TL;DR: It is demonstrated that nitrogen-deficient areas of the tropical and subtropical oceans are acutely vulnerable to nitrogen pollution, and it is projected that by the year 2050, 27–59% of all nitrogen fertilizer will be applied in developing regions located upstream of nitrogen- deficient marine ecosystems.
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Molecular and biogeochemical evidence for ammonia oxidation by marine Crenarchaeota in the Gulf of California
TL;DR: Direct quantification of ammonia oxidation rates by 15N labeling, and AOA and AOB abundances by quantitative PCR analysis of ammonia monooxygenase subunit A (amoA) genes, in the Gulf of California represent compelling evidence for an archaeal role in oceanic nitrification.