Soil nitrogen conservation mechanisms in a pristine south Chilean Nothofagus forest ecosystem

@article{Huygens2007SoilNC,
  title={Soil nitrogen conservation mechanisms in a pristine south Chilean Nothofagus forest ecosystem},
  author={D. Huygens and T. R{\"u}tting and P. Boeckx and O. Cl{\'e}emput and R. Godoy and C. M{\"u}ller},
  journal={Soil Biology \& Biochemistry},
  year={2007},
  volume={39},
  pages={2448-2458}
}
Abstract A 15N tracing study was carried out to identify microbial and abiotic nitrogen (N) transformations in a south Chilean Nothofagus betuloides forest soil which is characterized by low N inputs and absence of human disturbance. Gross N transformation rates were quantified with a 15N tracing model in combination with a Markov chain Monte Carlo sampling algorithm for parameter estimation. The 15N tracing model included five different N pools (ammonium (NH4+), nitrate (NO3−), labile (Nlab… Expand
Functional role of DNRA and nitrite reduction in a pristine south Chilean Nothofagus forest
Nitrite (NO2−) is an intermediate in a variety of soil N cycling processes. However, NO2− dynamics are often not included in studies that explore the N cycle in soil. Within the presented study,Expand
Are nitrate production and retention processes in subtropical acidic forest soils responsive to ammonium deposition
Abstract Changes in soil N-cycling and retention processes in subtropical/tropical acidic forest ecosystems under anthropogenic N inputs are not well understood. We conducted a laboratory 15 NExpand
Leaky nitrogen cycle in pristine African montane rainforest soil
Many pristine humid tropical forests show simultaneously high nitrogen (N) richness and sustained loss of bioavailable N forms. To better understand this apparent upregulation of the N cycle inExpand
Microbial nitrogen dynamics in south central Chilean agricultural and forest ecosystems located on an Andisol
The natural soil N supply in volcanic soils (Andisols) can be a significant source of plant-available N for agro-ecosystems. Nevertheless, intensive farming systems in south Chile apply highExpand
Enhanced deposition of nitrate alters microbial cycling of N in a subtropical forest soil
In China, atmospheric deposition of NO3− is increasing rapidly. However, information on how microbial N cycling in forest soils may respond to increasing deposition of NO3− is currently lacking.Expand
Topographic differences in nitrogen cycling mediate nitrogen retention in a subtropical, N-saturated forest catchment
Abstract N leaching and gaseous N emissions from forested catchments are controlled by soils differing in nitrogen (N) status and turnover depending on landscape position. To understand the impact ofExpand
Heterotrophic nitrification is the predominant NO3− production mechanism in coniferous but not broad-leaf acid forest soil in subtropical China
A study was carried out to investigate the potential gross nitrogen (N) transformations in natural secondary coniferous and evergreen broad-leaf forest soils in subtropical China. The simultaneouslyExpand
Soil nitrogen dynamics three years after a severe Araucaria–Nothofagus forest fire
Wildfires have shaped the biogeography of south Chilean Araucaria–Nothofagus rainforest vegetation patterns, but their impact on soil properties and associated nutrient cycling remains unclear.Expand
Ammonium fertilization causes a decoupling of ammonium cycling in a boreal forest
The forest-floor organic layer of the boreal coniferous forest is generally characterized by large mineral-N pools (especially ammonium), high rates of gross N mineralization, and low rates ofExpand
Effect of elevated CO2 on soil N dynamics in a temperate grassland soil.
Abstract The response of terrestrial ecosystems to elevated atmospheric CO 2 is related to the availability of other nutrients and in particular to nitrogen (N). Here we present results on soil NExpand
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