Concentration of sugars, phenolic acids, and amino acids in forest soils exposed to elevated atmospheric CO₂ and O₃

Abstract

Concentrations of soluble soil sugars, soluble phenolic acids, and free amino acids were measured in three forest communities at the FACTS-II Aspen FACE Site near Rhinelander, WI, in order to better understand how elevated atmospheric CO₂ and O₃ are influencing soil nutrient availability and cycling. Sugars, phenolic acids, and amino acids are mostly derived from plant and microbial processes, and have the potential to be influenced by changes in carbon inputs. We hypothesized that concentrations in the soil would parallel increases seen in biological activity, due to greater net primary productivity under elevated CO₂ and seasonal patterns of root growth.

Citation

Johnson, Robin M.; Pregitzer, Kurt S. 2007. Concentration of sugars, phenolic acids, and amino acids in forest soils exposed to elevated atmospheric CO2 and O3. Soil Biology and Biochemistry. 38: 3159-3166.