Bacteria fixing N2 in the sea a combination of microbiology, molecular biology and marine biology
|Målgruppe:||Biology, Bioinformatics, Biochemistry|
N2 (dinitrogen) fixation by prokaryotic microorganisms represents a major external source of nitrogen to the ocean. In some areas, N2 fixation can cover up to half of the nitrogen demand of primary production in the sunlit surface layer of the pelagial. Most studies on N2 fixation have revolved around N2-fixing (diazotroph) cyanobacteria, but more recent work has shown that many heterotrophic bacteria must also be important. However, many unknowns remain about these diazotroph bacteria. An especially important shortcoming of studying N2 fixation in the ocean is that traditional methods to measure rates of N2 incorporation might underestimate the true rates, and might particularly miss the contributions from these small, heterotrophic bacteria.
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|Keywords:||Marine biology, microbiology, molecular biology, bacteria, ecology|