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Carbon Sequestration in Rangelands
–Effects of changing precipitation on soil respiration –Managing California rangelands for carbon sequestration
New Frontiers in Nitrogen Biogeochemistry
–DNRA: dissimilatory nitrate reduction to ammonium –Feammox: Iron reduction coupled with ammonium oxidation –New methods for measuring denitrification
Greenhouse Gas Dynamics in Tropical Forests
–Rainfall exclusion experiments –Nitrogen and organic matter decomposition –Long term effects of hurricanes
Biogeochemistry in Variable-Redox Environments
–Controls on methane and nitrous oxide fluxes in peatland pastures –Sulfur cycling from the Atacama Desert to tropical rainforests