Nitrogen (N) is a key element for life in the oceans. It controls primary productivity in many
parts of the global ocean, consequently playing a crucial role in the uptake of atmospheric …

Biological dinitrogen (N2) fixation supplies nitrogen to the oceans, supporting primary
productivity, and is carried out by some bacteria and archaea referred to as diazotrophs …

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 …

The nitrogen input through biological N 2 fixation is essential for life in vast areas of the
global ocean. The belief is that cyanobacteria are the only relevant N 2-fixing (diazotrophic) …

The third edition of this bestselling text has been rigorously updated to reflect major new
discoveries and concepts since 2011, especially progress due to extensive application of …

Traditionally, cyanobacterial activity in oceanic photic layers was considered responsible for
the marine pelagic dinitrogen (N2) fixation. Other potentially N2-fixing bacteria and archaea …

Nitrogen fixation—the reduction of dinitrogen (N 2) gas to biologically available nitrogen (N)—
is an important source of N for terrestrial and aquatic ecosystems. In terrestrial environments …

Cyanobacterial nitrogen-fixers (diazotrophs) play a key role in biogeochemical cycling of
carbon and nitrogen in the ocean. In recent years, the unusual symbiotic diazotrophic …

Here we report N 2 fixation rates from a∼ 4000 km transect in the western and central
tropical South Pacific, a particularly undersampled region in the world ocean. Water samples …

Biological nitrogen fixation (BNF), the conversion of N2 into bioavailable nitrogen (N), is the
main process for replenishing N loss in the biosphere. However, BNF in groundwater …