Chronic nitrogen (N) fertilization can greatly affect soil carbon (C) sequestration by altering biochemical interactions between plant detritus and soil microbes. In lignin-rich forest soils, chronic N additions tend to increase soil C content partly by decreasing the activity of lignin-degrading enzymes. In cellulose-rich grassland soils it is not clear...
Chronic nitrogen (N) fertilization can greatly affect soil carbon (C) sequestration by altering biochemical interactions between plant detritus and soil microbes. In lignin-rich forest soils, chronic N additions tend to increase soil C content partly by decreasing the activity of lignin-degrading enzymes. In cellulose-rich grassland soils it is not clear...
Chronic nitrogen (N) fertilization can greatly affect soil carbon (C) sequestration by altering biochemical interactions between plant detritus and soil microbes. In lignin-rich forest soils, chronic N additions tend to increase soil C content partly by decreasing the activity of lignin-degrading enzymes. In cellulose-rich grassland soils it is not clear...
Industrial emissions of SO₂ and NOₓ, resulting in the formation and deposition of sulfuric and nitric acids, affect the health of both terrestrial and aquatic ecosystems. Since the mid-late 20th century, legislation to control acid rain precursors in both Europe and the US has led to significant declines in both...
Models of ecosystem carbon (C) balance
generally assume a strong relationship between NPP,
litter inputs, and soil C accumulation, but there is little
direct evidence for such a coupled relationship. Using a
unique 50-year detrital manipulation experiment in a
mixed deciduous forest and in restored prairie grasslands
in Wisconsin, combined...
Woody encroachment has dramatically changed land cover patterns in arid and semiarid
systems (drylands) worldwide over the past 150 years. This change is known to influence bulk
soil carbon (C) pools, but the implications for dynamics and stability of these pools are not well
understood. Working in a Chihuahuan Desert...
Recent interest in the carbon dynamics of Earth demands precise quantification
of carbon fluxes, such as dissolved organic carbon (DOC), that may
reveal characteristics and responses of significant carbon pools to environmental
change. As a component of a larger carbon budget project within
HJ Andrews Experimental Forest we are quantifying...