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Lazareva et al., 2012

Talk/Poster

Biogeochemical Transformation of Fe- and Mn- Along a Redox Gradient: Implications for Carbon Sequestration within the Christina River Basin Critical Zone Observatory

Lazareva, O., D.L. Sparks, A. Aufdenkampe, K. Yoo, S. Hicks and J. Kan. (2012)
DENIN Research Symposium, University of Delaware, Newark, Delaware, January  

Abstract

Organic carbon (C )-mineral complexation mechanism is crucial in C sequestration. It is a function of geomorphologic, hydrologic, and microbiological processes. Soil horizons with abundant Fe and Mn oxides/hydroxides have high mineral surface area and thus a high capacity to complex C , reducing its susceptibility to microbial degradation.[p]At the C hristina River Basin-C ritical Zone Observatory, located in the Piedmont region of southeastern Pennsylvania and northern Delaware, we investigate how Feand Mn- redox transformations affect the C cycle under varying redox conditions across a wide range of landscape uses, such as floodplain forest, upland forest, and agriculture.[p]This multidisciplinary field study will demonstrate the combined results for the chemical composition of soil-pore water, bulk soil, and molecular analysis on microbial communities coupled with an advanced sensor network for real-time monitoring of hydrological and biogeochemical parameters. These sensors can be widely installed at low cost using open-source hardware and software platforms.

Citation

Lazareva, O., D.L. Sparks, A. Aufdenkampe, K. Yoo, S. Hicks and J. Kan. (2012): Biogeochemical Transformation of Fe- and Mn- Along a Redox Gradient: Implications for Carbon Sequestration within the Christina River Basin Critical Zone Observatory. DENIN Research Symposium, University of Delaware, Newark, Delaware, January.