Time-series observations of geochemical tracers and diazotroph abundances in the
northern subtropical gyres suggest variability in nitrogen fixation on interannual and longer …

An eddy‐resolving coupled ecosystem‐circulation model of the North Atlantic is used to
investigate the impact of mesoscale variability on the nitrate supply to the light‐lit euphotic …

Oceanic nitrogen fixation and biogeochemical interactions between the nitrogen,
phosphorus and iron cycles have important implications for the control of primary production …

Dinitrogen (N2) fixing microorganisms (termed diazotrophs) exert important control on the
ocean carbon cycle. However, despite increased awareness on the roles of these …

We interpret the environmental controls on the global ocean diazotroph biogeography in the
context of a three‐dimensional global model with a self‐organizing phytoplankton …

Studies of nutrient cycles involve integrating information from very fine spatial and temporal
scales (the dynamics of enzymes in the neighborhood of microbes) to very coarse scales …

Tropical ecosystems play a central role in the global carbon cycle. Large changes in tropical
temperature over geologic time and the significant responses of tropical ecosystems to …

Climate variability affects the capacity of the biosphere to assimilate and store important
elements, such as nitrogen and carbon. Here we present biogeochemical evidence from the …

Ocean deoxygenation due to climate change may alter redox-sensitive nutrient cycles in the
marine environment. The productive eastern tropical North Atlantic (ETNA) upwelling region …

Nitrogen fixers, or diazotrophs, play a key role in the carbon and nitrogen cycle of the world
oceans, but the controlling mechanisms are not comprehensively understood yet. The …