Soil microorganisms shape global element cycles in life and death. Living soil microorganisms
are a major engine of terrestrial biogeochemistry, driving the turnover of soil organic …

Denitrification, the reduction of the nitrogen (N) oxides, nitrate (NO 3 − ) and nitrite (NO 2 − ),
to the gases nitric oxide (NO), nitrous oxide (N 2 O), and dinitrogen (N 2 ), is important to …

Microbial ecology is currently undergoing a revolution, with repercussions spreading
throughout microbiology, ecology and ecosystem science. The rapid accumulation of molecular …

Regulation of trace N-gas production via nitrification and denitrification occurs at two levels:(a)
control of the rates of these processes and (b) control of the relative proportions of end …

This chapter outlines the methodologies and the concepts used to assess soil internal
nitrogen(N)‐cycle processes. It discusses laboratory and field methods for determining gross and …

Like all higher organisms, plants have evolved in the context of a microbial world, shaping
both their evolution and their contemporary ecology. Interactions between plant roots and soil …

Moisture may limit microbial activity in a wide range of environments including salt water,
food, wood, biofilms, and soils. Low water availability can inhibit microbial activity by lowering …

If changes in the composition of the soil microbial community alter the physiological capacity
of the community then such changes may have ecosystem consequences. We examined …

… John & Hollocher, 1977) and with 13N in several cultures and soils (Firestone et al., 1980)
indicated that N 20 was a free, obligate intermediate during N02 - reduction to N2• This work, …

… The aqueous phases from both extractions were pooled, mixed with 1 ml 40% polyethylene
glycol 6000 dissolved in 1.6 m NaCl and 3 μl linear acrylamide (5 mg ml −1 ; Ambion, Grand …