University of California, Irvine
Earth System Science
240F Rowland Hall
Irvine, CA 92697-3100
(949) 824-5693 (tel)
(949) 824-3874 (fax)
University of California, Irvine
Earth System Science
240F Rowland Hall
Irvine, CA 92697-3100
(949) 824-5693 (tel)
(949) 824-3874 (fax)
Brett D. Walker
Associate Project Scientist
I study the cycling of major carbon and nitrogen reservoirs in the sea – on modern to millennial timescales. I use stable isotopic (δ13C, δ15N) measurements coupled with radiocarbon dating (Δ14C) to constrain sources, sinks and the turnover times of dissolved and suspended particulate organic matter (DOM, POMsusp) in the marine environment. My current research is focused on exploring the relationships between detrital organic matter physical size, chemical composition and reactivity (14C-age) as a new tool for understanding organic matter transformation and degradation pathways in the coastal and open ocean.