Abstract Subtropical gyres cover 26%–29% of the world's surface ocean and are
conventionally regarded as ocean deserts due to their permanent stratification, depleted …

In the ocean's major oxygen minimum zones (OMZs), oxygen is effectively absent from sea
water and life is dominated by microorganisms that use chemicals other than oxygen for …

Biological nitrogen fixation is a major important source of nitrogen for low-nutrient surface
oceanic waters. Nitrogen-fixing (diazotrophic) cyanobacteria are believed to be the primary …

Though nitrogen fixation by epiphytic diazotrophs on pelagic Sargassum has been
recognized for decades, it has been assumed to contribute insignificantly to the overall …

The bioavailable nitrogen fixed by diazotrophs is critical for sustaining productivity in the
oligotrophic ocean. Despite this, understanding how diazotroph-derived nitrogen integrates …

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 …

Nitrogen is essential for life but is often a major limiting nutrient for growth in the ocean.
Biological dinitrogen fixation is a major source of new nitrogen to surface waters and …

In vitro incubations using natural marine communities can provide insight into community
structure and function in ways that are challenging through field observations alone. We …

Tropical corals are associated with a diverse community of dinitrogen (N2)-fixing
prokaryotes (diazotrophs) providing the coral an additional source of bioavailable nitrogen …

We performed nitrogen (N) budgets in the photic layer of three contrasting stations
representing different trophic conditions in the western tropical South Pacific (WTSP) Ocean …