BACKGROUND Biological dinitrogen (N2) fixation, the reduction of atmospheric N2 to
ammonia, is important for maintaining the fertility of the oceans by providing biologically …

The pelagic brown macroalgae Sargassum spp. have grown for centuries in oligotrophic
waters of the North Atlantic Ocean supported by natural nutrient sources, such as excretions …

Marine diazotrophs convert dinitrogen (N 2) gas into bioavailable nitrogen (N), supporting
life in the global ocean. In 2012, the first version of the global oceanic diazotroph database …

Dinitrogen (N2) fixation (the reduction of atmospheric N2 to ammonium by specialized
prokaryotic microbes), represents an important input of fixed nitrogen and contributes …

Marine N2 fixation supports a significant portion of oceanic primary production by making N2
bioavailable to planktonic communities, in the process influencing atmosphere-ocean …

Atmospheric deposition of desert dust and other aerosols influence on the open ocean
ecosystem and climate. These aerosols provide iron, phosphorus and bio-essential trace …

Recent observations of N2 fixation rates (NFR) and the presence of nitrogenase (nifH)
genes from heterotrophic N2‐fixing (diazotrophic) prokaryotes in unusual habitats challenge …

Inorganic nitrogen depletion restricts productivity in much of the low-latitude oceans,
generating a selective advantage for diazotrophic organisms capable of fixing atmospheric …

There are a number of hypotheses concerning the environmental controls on marine
nitrogen fixation (NF). Most of these hypotheses have not been assessed against direct …

The western boundary currents are characterized by abundant diazotrophs including
Trichodesmium, which may fuel N2 fixation when they intrude into marginal seas. The …