The marine nitrogen cycle is a complex web of microbially mediated reactions that control
the inventory, distribution, and speciation of nitrogen in the marine environment. Because …

Ammonia oxidation to nitrite and its subsequent oxidation to nitrate provides energy to the
two populations of nitrifying chemoautotrophs in the energy-starved dark ocean, driving a …

The oceanic nitrogen cycle consists of a web of microbially mediated transformations driven
in part by the large range in possible nitrogen oxidation states. Many of these …

Nitrogen in the Marine Environment provides information pertinent to the many aspects of
the nitrogen cycle. This book presents the advances in ocean productivity research, with …

Nitrification is the process whereby ammonium (NH4 þ) is oxidized to nitrite (NO2 À) and
then to nitrate (NO3 À). It thus links the most oxidized and most reduced components of the …

The marine and terrestrial nitrogen cycles are closely linked, although intellectual
boundaries in disciplines offen lead to separate treatment of both cycles (Gruber, 2004) …

In the biogeochemical nitrogen cycle, microbial respiration processes compete for nitrate as
an electron acceptor. Denitrification converts nitrate into nitrogenous gas and thus removes …

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

Biological nitrogen fixation is a much more important process in the nitrogen cycle of the
oceans than previously thought. Further, nitrogen fixation may have an influence on the …

Marine waters are often nitrogen (N) limited. Denitrification, the microbial conversion of
nitrate to dinitrogen (N 2) gas, is responsible for significant N removal from the coastal …