Month: September 2009
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Carbon Sequestration in Rangelands
–Effects of changing precipitation on soil respiration –Managing California rangelands for carbon sequestration
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Steven Hall
I’m a third year PhD student in the Silver lab. My thesis examines the impact of anaerobic conditions and fluctuations in redox potential on greenhouse gas emissions and carbon cycling in tropical forest soils. My previous research focused on the restoration of temperate and neotropical wetlands, where I evaluated impacts of altered disturbance regimes on…
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New Frontiers in Nitrogen Biogeochemistry
–DNRA: dissimilatory nitrate reduction to ammonium –Feammox: Iron reduction coupled with ammonium oxidation –New methods for measuring denitrification
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Greenhouse Gas Dynamics in Tropical Forests
–Rainfall exclusion experiments –Nitrogen and organic matter decomposition –Long term effects of hurricanes
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Biogeochemistry in Variable-Redox Environments
–Controls on methane and nitrous oxide fluxes in peatland pastures –Sulfur cycling from the Atacama Desert to tropical rainforests