Agriculture is responsible for over half of the input of reactive nitrogen (N) to terrestrial
systems; however improving N availability remains the primary management technique to …

Losses of nitrogen from the soil/plant system not only reduce soil fertility and plant yield but
can also create adverse impacts on the environment. Ammonia emissions into the …

The understanding of nitrogen (N) cycling in forest ecosystems has undergone a major shift
in the past decade as molecular methods are being used to link microorganisms to key …

Autotrophic archaeal and bacterial ammonia-oxidisers (AOA and AOB) drive soil nitrification.
Ammonia limitation, mixotrophy, and pH have been suggested as factors providing niche …

High and low rates of ammonium supply are believed to favour ammonia-oxidising bacteria
(AOB) and archaea (AOA), respectively. Although their contrasting affinities for ammonium …

Nitrogen fertilisation of agricultural soil contributes significantly to emissions of the potent
greenhouse gas nitrous oxide (N2O), which is generated during denitrification and, in oxic …

Increasing evidence demonstrated the involvement of ammonia-oxidizing archaea (AOA) in
the global nitrogen cycle, but the relative contributions of AOA and ammonia-oxidizing …

Genes of archaea encoding homologues of ammonia monooxygenases have been found
on a widespread basis and in large amounts in almost all terrestrial and marine …

Anaerobic digestion of organic residues has the potential to significantly contribute to a shift
from fossil to renewable energy. The by-product, anaerobic slurry, does have properties that …

Nitrification, the aerobic oxidation of ammonia to nitrate via nitrite, has been suggested to
have been a central part of the global biogeochemical nitrogen cycle since the oxygenation …