Nitrogen (N) is one of the primary nutrients required to build biomass and is therefore in high
demand in aquatic ecosystems. Estuaries, however, are frequently inundated with high …

Active heterotrophic bacterial communities exist in all marine environments, and although
their growth rates or respiratory rates may be limited by the interaction of low substrate …

There is now clear evidence for major differences in heterotrophic bacterial composition
between freshwater and marine ecosystems. A fundamental question that remains …

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 emission of nitrous oxide (N2O) from streams draining agricultural landscapes is
estimated by the Intergovernmental Panel on Climate Change (IPCC) to constitute a globally …

Nous avons étudié la nitrification en fonction de la disponibilité du carbone organique (C),
les effets interactifs du rapport C: N et de la disponibilité de l'azote organique (N) ainsi que …

Phytoplankton assimilation and microbial oxidation of ammonium are two critical conversion
pathways in the marine nitrogen cycle. The underlying regulatory mechanisms of these two …

The article reviews the most recent findings on the interdisciplinary characteristics of the
Mediterranean Sea shelf areas, from the Northern to the southern shelf regions. First of all a …

Understanding rates of nitrogen cycling in estuaries is crucial for understanding their
productivity and resilience to eutrophication. Nitrification, the microbial oxidation of ammonia …

Background Estuaries are highly productive ecosystems that can export organic matter to
coastal seas (the 'outwelling hypothesis'). However the role of this food resource subsidy on …