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Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
The DOC reactivity of a northern peatland was investigated by measuring and modeling concentrations, stable isotopes, and natural abundance radiocarbon of solid phase peat, DOC, DIC, and CH4 in field and lab studies. We tested the...
The use of chemical tracers to understand ecosystem interactions in the marine environment has gained increasing popularity over the past three decades. Carbon isotope abundances in organic matter sources in the marine system vary...
The δ13C value of foliage respiration has been considered a constant in the past and modeling efforts have assumed that the δ13C value of foliage respiration is constant and is directly related to substrate without any fractionation....
As the Arctic warms, the ~277 Pg of carbon stored in permafrost peatlands faces an uncertain fate. Arctic and Subarctic peatlands are likely to release more methane (CH4) as permafrost thaw releases formerly-frozen carbon, thaw-induced...
The Deepwater Horizon (DWH) blowout of 2010 released an estimated 4.5-4.9 million barrels of oil and 500, 000t of methane into the Gulf of Mexico (GOM). Some of this oil rose to the surface, forming oil slicks, while an estimated 30% of...
On a global scale, peatlands contain 530 ± 160 Pg carbon, which is equivalent to >50% of the atmospheric pool. The fate of this enormous C reservoir could significantly impact the climate trajectory. Yet, two puzzling phenomena persist...
Nitrate (NO3-) and uranium (U) are priority co-contaminants at U.S. Department of Energy (DOE) managed nuclear legacy waste sites, where nitric acid was extensively used to process uranium waste. This combination of a low pH and mixed...
Fire-derived compounds have received considerable attention as a refractory form of dissolved organic carbon (DOC), the largest carbon pool in the ocean. Due to its recalcitrant nature, pyrogenic or black carbon, which is produced by the...
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