The chemical and physical factors which influence the magnitude of the soil microbial
biomass and their relative importance in natural and managed terrestrial ecosystems are …

Soil microorganisms are considered C‐limited, while plant productivity is frequently N‐
limited. Large stores of organic C in boreal forest soils are attributed to negative effects of …

This revision maintains the position of Forest Ecosystems as the one source for the latest
information on the advanced methods that have enhanced our understating of forest …

Agricultural systems that receive high or low organic matter (OM) inputs would be expected
to differ in soil nitrogen (N) transformation rates and fates of ammonium (NH4+) and nitrate …

Organic farming is rapidly expanding worldwide. Plant growth in organic systems greatly
depends on the functions performed by soil microbes, particularly in nutrient supply …

The availability of nitrogen (N) limits production in many forest ecosystems, and many
methods are available for estimating N availability (Keeney, 1980; Binkley 1986; …

No-till (NT) system for grain cropping is increasingly being practised in Australia. While
benefits of NT, accompanied by stubble retention, are almost universal for soil erosion …

Soil microbial biomass comprises less than 5% of organic matter in soil. However, it
performs at least 3 critical functions in soil and the environment. It is a labile source of …

Gross rates of N mineralization, immobilization, and nitrification were measured by 15N
isotope dilution in a 10—yr—old conifer plantation and in a mature conifer forest. Gross rates …

We measured short-term (24 h) partitioning of 15 NH 4+ and 15 NO 3− into plants and
microbes in a California annual grassland. Experiments were done in early spring at the …