Skidaway Institute of Oceanography

Education:

B.S. Humboldt State University, Chemistry, cum laude, 1988
B.S. Humboldt State University, Oceanography, magna cum laude, 1988
M.Sc. University of Washington, Oceanography, 1994
Ph.D. University of Washington, Oceanography [Chemistry], 1996

Research Interests and Projects:

Use of Stable isotopes to determine sources and diagenesis of organic compounds and nutrients in ecosystems. Development of high resolution X-ray spectromicroscopic techniques for examining nutrient cycling and sequestration and organic matter diagenesis.

Courses:

Introduction to Coastal Oceanography, Savannah State University
Introduction to Estuarine and Coastal Oceanography, Georgia Institute of Technology .

Current Projects:

SISSIL webpage

Examining Marine Phosphate Sources and Sinks using Advanced Spectromicroscopy and NMR Techniques. NSF.

Mechanisms behind non-Redfieldian P cycling in water masses of the Southern Ocean, new insights from x-ray spectromicroscopy. NSF.

Adjunct Appointments:

Georgia Institute of Technology , Dept. of Earth and Atmospheric Sciences

Other Affiliations:

Director, Skidaway Island Scientific Stable Isotope Laboratory (SISSIL).

Awards:

Graduate Recruitment Fellowship, University of Texas at Austin, 2001; Postdoctoral Fellowship, Carnegie Institute of Washington, 1996; NSF Dissertations in Chemical Oceanography Award, 1996; National Defense, Science and Engineering Graduate Fellowship, 1991-1994; Fred Telonicher Marine Laboratory Research Fellowship, 1986

Selected Publications:

2007	Townsend-Small, A., J. L. Noguera, M.E. McClain, and J.A. Brandes. 2007. Radiocarbon and stable isotope geochemistry of organic matter in the Amazon headwaters, Peruvian Andes. Global Biogeochemical Cycles 21, GB2029, doi:10.1029/2006GB002835 PDF
2007	Brandes, J. A., A. H. Devol, and C. Deutsch. 2007. New developments in the marine nitrogen cycle. Chemical Reviews 107: 577-589.
2007	Brandes, J. A., E. Ingall, and D. Paterson. 2007. Characterization of minerals and organic phosphorus species in marine sediments using soft X-ray fluorescence spectromicroscopy. Marine Chemistry 103 (3-4): 250-265.
2007	Townsend-Small, A., M. J. McCarthy, J. A. Brandes, L. Yang, L. Zhang, and W. S. Gardner. 2007. Seasonal stable isotopic composition of nitrate in Taihu Lake and major inflow rivers Hydrobiologia 581: 135-140.
2006	Devol, A. H., A.G. Uhlenhopp, S. W. A. Naqvi, J. A. Brandes, D. A. Jayakumar, H. Naik, S. Gaurin, L.A. Codispoti, and T. Yoshinari. 2006. Denitrification rates and excess nitrogen gas concentrations in the Arabian Sea oxygen deficient zone. Deep Sea Research Part I: Oceanographic Research Papers 53: 1533-1547.
2006	Haberstroh, P.A., J. A Brandes, Y. Gélinas, A. F. Dickens, S. Wirick, and G. D Cody. 2006. Chemical composition of the graphitic black carbon fraction in riverine and marine sediments at sub-micron scales using Carbon X-ray Spectromicroscopy Geochimica et Cosmochimica Acta, 70: 1483-1494.
2005	Townsend-Small, A., J. A. Brandes and M. E. McClain. 2005. Chemical and stable isotopic tracers of carbon and nitrogen sources and transport in the Peruvian Andean Amazon. Limnology and Oceanography 50(3): 672-685.
2004	Brandes, J. A., S. Wirick, C. Lee, S. Wakeham, M. Peterson and G. Cody. 2004. Examining marine particulate organic matter at sub-micron scales using scanning transmission X-ray microscopy and carbon X-ray adsorption near edge spectroscopy. Marine Chemistry 92: 107– 121 PDF
2004	Cody, G. D., N. Z. Boctor, J. A. Brandes, T. R. Filley, R. M. Hazen and H. S. Yoder Jr. 2004. Assaying the catalytic potential of transition metal sulfides for abiotic carbon fixation. Geochimica et Cosmochimica Acta. 68(10):2185–2196. PDF
2003	Haberer, J.L. and J.A. Brandes. 2003. A high sensitivity, low volume HPLC based method to determine soluble reactive phosphate (SRP) in freshwater and saltwater. Mar. Chem. 82(3):185-196. PDF
2003	Sigman, D.M., R. Robinson, A. N. Knapp, A. van Geen, D. C. McCorkle, J. A. Brandes and R. C. Thunell. 2003. Distinguishing between water column and sedimentary denitrification in the Santa Barbara Basin using the nitrogen isotopes of nitrate. Geochem. Geophys. Geosys. 4(5):1040,doi:10.1029/2002GC000384. PDF
2002	Brandes J.A. and A.H. Devol. 2002. A global marine fixed nitrogen isotopic budget: Implications for Holocene nitrogen cycling. Global Biogeochemical Cycles VOL. 16, NO. 4, 1120, doi:10.1029/2001GB001856. PDF
2002	Hazen, R. M., N. Boctor, J. A. Brandes, G. D. Cody, R. J. Hemley, A. Sharma, and H.S.Yoder. 2002. High pressure and the origin of life. J. Phys. Cond. Matter. 14(44): 11489-11494. PDF
2001	Cody, G. D., R. M. Hazen, J. A. Brandes, H. Morowitz, and H. S. Yoder, Jr. 2001. Geochemical roots of autotrophic carbon fixation: hydrothermal experiments in the system citric acid, H 2 O-(±FeS)-(±NiS). Geochimica et Cosmochimica Acta 65(20):3557-3576. PDF
2001	Codispoti, L.A., J. A. Brandes, J. P. Christensen, A. H. Devol, S. W. A. Naqvi, H. W. Paerl, and T. Yoshinari. 2001. The oceanic fixed nitrogen and nitrous oxide budgets: Moving targets as we enter the anthropocene? Scientia Marina 65:85-105. PDF
2001	Brandes, J. A., G. D. Cody, R. M. Hazen and H. S. Yoder, Jr. 2001. Stability and transformations of nitrogenous compounds under hydrothermal conditions. Astrobiology 1(3):298.
1998	Brandes J. A., A.H. Devol, T. Yoshinari, D.A. Jayakumar, and S.W.A. Naqvi. 1998. Isotopic composition of nitrate in the central Arabian Sea and eastern tropical North Pacific: a tracer for mixing and nitrogen cycles. Limnology and Oceanography 43(7):1680-1689. PDF
1998	Brandes, J. A., G. D. Cody, B.A. Cooper, R. M. Hazen, and H. S. Yoder, Jr. 1998. Abiotic nitrogen reduction on the early Earth. Nature 395:365-367. PDF
1998	Naqvi, S. W. A., T. Yoshinari, D. A. Jayakumar, M.A. Altabet, P. V. Narvekar, A.H. Devol, J. A. Brandes, and L.A. Codispoti. 1998. Budgetary and biogeochemical implications of N 2 O isotope signatures in the Arabian Sea. Nature 394:462-464. PDF
1998	Naqvi, S. W. A., T. Yoshinari, J. A. Brandes, A.H. Devol, D.A. Jayakumar, P. V. Narvekar, M.A. Altabet, and L. A. Codispoti. 1998. Nitrogen isotopic studies in the suboxic Arabian Sea. Proc. Indian Acad. Sci. 107:367-378.
1997	McClain M.E., J. E. Richey, J. A. Brandes, and T.P. Pimentel. 1997. Dissolved organic matter and terrestrial-lotic linkages in the central Amazon basin of Brazil. Global Biogeochemical Cycles 11(3):295-311. PDF
1997	Brandes J. A. and A.H. Devol. 1997. Isotopic fractionation of nitrogen and oxygen in coastal marine sediments. Geochimica et Cosmochimica Acta 61(9):1793-1801.
1996	Brandes J. A., M.E. McClain, and T. P. Pimentel. 1996. 15N evidence for the origin and cycling of inorganic nitrogen in a small Amazonian catchment. Biogeochemistry 34(1):45-56.
1995	Brandes, J. A. and A.H. Devol. 1995. Simultaneous NO 3 and O 2 respiration in coastal sediments: Evidence for Discrete Diagenesis. J. Mar. Res. 53:771-797.