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 …

Vast expanses of oxygen-deficient and nitrite-rich water define the major oxygen minimum
zones (OMZs) of the global ocean. They support diverse microbial communities that …

Ocean ecosystems have responded and will continue to respond to climate changes of
different rates, magnitudes, and durations (virtually certain). Human societies depend on …

Marine N 2 fixing microorganisms, termed diazotrophs, are a key functional group in marine
pelagic ecosystems. The biological fixation of dinitrogen (N 2) to bioavailable nitrogen …

The two commonly applied methods to assess dinitrogen (N2) fixation rates are the 15N2-
tracer addition and the acetylene reduction assay (ARA). Discrepancies between the two …

We report on the contamination of commercial 15-nitrogen (15N) N2 gas stocks with 15N-
enriched ammonium, nitrate and/or nitrite, and nitrous oxide. 15N2 gas is used to estimate …

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 …

Biological dinitrogen fixation provides the largest input of nitrogen to the oceans, therefore
exerting important control on the ocean's nitrogen inventory and primary productivity …

MEDUSA-1.0 (Model of Ecosystem Dynamics, nutrient Utilisation, Sequestration and
Acidification) was developed as an" intermediate complexity" plankton ecosystem model to …

Coastal upwelling regimes associated with eastern boundary currents are the most
biologically productive ecosystems in the ocean. As a result, they play a disproportionately …