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 …

Respiratory reduction of nitrate (denitrification) is recognized as the most important process
converting biologically available (fixed) nitrogen to N2. In current N cycle models, a major …

The δ18O value of nitrate produced during nitrification (δ18ONO3, nit) was measured in
experiments designed to mimic oceanic conditions, involving cocultures of ammonia …

Nitrification is the process that converts ammonium to nitrate and thus links the regeneration
of organic nitrogen to fixed nitrogen loss by denitrification. The first step, oxidation of …

The ocean's nitrogen cycle is driven by complex microbial transformations, including
nitrogen fixation, assimilation, nitrification, anammox and denitrification. Dinitrogen is the …

The removal of nitrogen (N) in aquatic ecosystems is of great interest because excessive
nitrate in groundwater and surface water is a growing problem. High nitrate loading …

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 …

The marine nitrogen (N) cycle controls the productivity of the oceans. This cycle is driven by
complex biogeochemical transformations, including nitrogen fixation, denitrification, and …

Nitrification is a two-step process linking the reduced and oxidized sides of the nitrogen
cycle. These steps are typically tightly coupled with the primary intermediate, nitrite, rarely …

In the global nitrogen cycle, bacterial denitrification is recognized as the only quantitatively
important process that converts fixed nitrogen to atmospheric nitrogen gas, N2, thereby …