Publications
Should you require any reprints of the listed publications, Please feel free to contact me
|
78 J. Duan, R. Cloete, J. C. Loock, A. Lanzirotti, M. Newville, A. Martinez-Garcia, D. M. Sigman, P. J. Lam, A. N. Roychoudhury, S. C.B. Myneni (2024) Biogenic-to-Lithogenic Handoff of Particulate Zinc Controls the Zn-Cycle in the Southern Ocean. Science
77 Raquel F. Flynn, Lumi Haraguchi, Jeff McQuaid, Jessica M. Burger, Percy Mutseka Lunga, Luca Stirnimann, Saumik Samanta, Alakendra N. Roychoudhury, and Sarah E. Fawcett (2023) Nanoplankton: the dominant vector for carbon export across the springtime Southern Ocean. Science Advances, V9(48), 1-17, doi: 10.1126/sciadv.adi3059 76 Elisa Seyboth, Olaf Meynecke, Jasper De Bie, Alakendra N Roychoudhury, Ken Findlay (2023) A review of post-whaling abundance, trends, and recent changes in distribution and migration patterns of Southern Hemisphere humpback whales. Frontiers in Marine Sciences, doi: 10.3389/fmars.2023.997491 75 Asmita Singh, Susanne Fietz, Sandy J. Thomalla, Nicolas Sanchez, Murat V. Ardelan, Sébastien Moreau, Hanna M. Kauko, Agneta Fransson, Melissa Chierici, Saumik Samanta, Thato N. Mtshali, Alakendra N. Roychoudhury and Thomas J. Ryan‐Keogh (2023) Absence of photophysiological response to iron addition in autumn phytoplankton in the Antarctic sea-ice zone. Biogeosciences, V20, 3073–3091, doi: 10.5194/bg-20-3073-2023 74 Jan-Olaf Meynecke, Saumik Samanta, Jasper De Bie, Elisa Seyboth, Subhra Prakash Dey, Giles Fearon, Marcello Vichi, Ken Findlay, Alakendra Roychoudhury and Brendan George Mackey (2023) Do whales really increase the oceanic removal of atmospheric carbon? Frontiers in Marine Science: Marine Megafauna doi: 10.3389/fmars.2023.1117409 73 Saumik Samanta, Ryan Cloete, Subhra Prakash Dey, Jan-Lukas Menzel Barraqueta, Jean C Loock, Jan-Olaf Meynecke, Jasper de Bie, Marcello Vichi, Alakendra N Roychoudhury (2023) Exchange of dissolved Pb from Indian to Atlantic Ocean is driven by Agulhas Current and atmospheric Pb input from South Africa. Scientific Reports V13, 5465, doi: 10.1038/s41598-023-32613-5 72 Sebastien Moreau, Tore Hattermann, Laura de Steur, Hanna M. Kauko, Harald Steen, Heidi Ahonen, Murat Ardelan, Philipp Assmy, Melissa Chierici, Sebastien Descamps, Tilman Dinter, Tone Falkenhaug, Agneta Fransson, Eirik Grønningsæter, Elvar Halfredsson, Anais Lebrun, Andrew Lowther, Nicolas Lubcker, Pedro Monteiro, Ilka Peeken, Alakendra Roychoudhury, Magdalena Róźańska, Thomas Ryan-Keogh, Nicolas Sanchez, Asmita Singh, Jan-Henrik Simonsen, Nadine Steiger, Sandy J. Thomalla, Andre van Tonder, Jozef Wiktor (2023) Wind-driven upwelling of iron sustains dense phytoplankton blooms and productive food webs in the eastern Weddell Gyre. Nature Communication, V14,1303, doi: 10.1038/s41467-023-36992-1 71 Susanne Fietz, Andrea Baker, Charlotte S. Miller, B. David A. Naafs, Francien Peterse, Jemma Finch, Marc Humphries, Enno Schefuß, Alakendra N. Roychoudhury, and Joyanto Routh (2023) Terrestrial temperature evolution of Southern Africa during the Late Pleistocene and Holocene: evidence from the Mfabeni Peatland. Quaternary Science Reviews, V 299, pp. 1 – 13, doi: 10.1016/j.quascirev.2022.107870 70 N. R van Horsten, H. Planquette, G. Sarthou, T. N Mtshali, A. Roychoudhury, E. Bucciarelli, (2022) Early winter Southern Indian Ocean Barium excess as a seasonal remineralization proxy linked to remote sensing primary productivity (GEOTRACES GIPr07 cruise). Biogeosciences 19, pp. 3209-3224, doi: 10.5194/bg-19-32209-2022 69 M. Mdutyana, X. Sun, J.M. Burger, R.F. Flynn, S. Smith, N.R. van Horsten, A.N. Roychoudhury, H. Planquette, E. Bucciarelli, S.J. Thomalla, B.B. Ward, S.E. Fawcett (2022) The kinetics of ammonium uptake and oxidation across the African sector of the Southern Ocean. Limnology and Oceanography, V. 67, pp. 973–991, doi: 10.1002/lno.12050 68 Saumik Samanta, Jan Lukas Menzel Barraqueta, Reshmi Das and Alakendra N Roychoudhury (2022) Source apportionment of the atmospheric Pb using a simulation-based inversion model: a case study from India uncovers bituminous road as the prime contributor of petroleum-derived Pb. Applied Geochemistry, doi: 10.1016/j.apgeochem.2021.105164 67 Saumik Samanta, Ryan Cloete, Jean C Loock, Riana Rossouw, Alakendra N Roychoudhury (2021) Determination of trace metal (Mn, Fe, Ni, Cu, Zn, Co, Cd and Pb) concentration in seawater using single quadrupole ICP-MS: A comparison between offline and online preconcentration setups. Minerals, 11(11) doi.org/10.3390/min11111289 66 Jan-Olaf Meynecke, Jasper de Bie, Jan-Lukas Menzel Barraqueta, Elisa Seyboth, Subhra Prakash Dey, Serena B. Lee, Suamik Samanta, Marcello Vichi, Ken Findlay, Alakendra Roychoudhury, Brendan Mackey (2021) The role of environmental drivers in humpback whale distribution, movement and behaviour: a review. Frontiers in Marine Science 65 Subhra Prakash Dey, Marcello Vichi, Giles Fearon, Elisa Seyboth, Ken P. Findlay, J.-O. Meynecke, Jasper De Bie, Serena Blyth Lee, Saumik Samanta, Alakendra N. Roychoudhury, Brendan Mackey (Accepted 2021) Oceanographic anomalies coinciding with humpback whale super-group occurrences in the Southern Benguela. Scientific Reports, doi: 10.1038/s41598-021-00253-2 64 R. Cloete, J.C. Loock, N.R. van Horsten, J-L. Menzel Barraqueta, S. Fietz, T.N. Mtshali, H. Planquette, M. I. Garcia-Ibanez, A.N. Roychoudhury (2021) Winter dissolved and particulate zinc in the Indian sector of the Southern Ocean: Distribution and relation to major nutrients (GEOTRACES GIpr07 transect) Marine Chemistry, V236, doi.org/10.1016/j.marchem.2021.104031 63 R. Cloete, J.C. Loock, N.R. van Horsten, S. Fietz, T.N. Mtshali, H. Planquette, A.N. Roychoudhury (2021) Winter biogeochemical cycling of dissolved and particulate cadmium in the Indian sector of the Southern Ocean (GEOTRACES GIpr07 transect). Frontiers in Marine Sciences: Marine Biogeochemistry, 8, doi: 10.3389/fmars.2021.656321 62 Margaret O Ogundare, Agneta Fransson, Melissa Chierici, Warren Joubert and Alakendra N Roychoudhury (2021) Variability of sea-air carbon dioxide flux in autumn across the Weddell gyre and offshore Droning Maud Land in the Southern Ocean. Frontiers in Marine Sciences: Marine Biogeochemistry, 7, pp. 1168, doi: 10.3389/fmars.2020.614263 61 Bjorn Phillip von der Heyden; Julien Benoit; Vincent Fernandez; Alakendra N Roychoudhury (2020) Synchrotron X-ray radiation and the African earth sciences: a critical review. Journal of African Earth Sciences,172, doi:10.1016/j.jafrearsci.2020.104012. 60 Meynecke, Jan-Olaf; Seyboth, Elisa; Chama, Abdoul; de Bie, Jasper; Dey, Subhra Prakash; Lee, Serena; Menzel Barraqueta, Jan-Lukas; Tulloch, Vivitskaia; Vichi, Marcello; Findley, Ken; Roychoudhury, Alakendra Narayan ; Mackey, Brendan (2020) Responses of humpback whales to a changing climate in the Southern Hemisphere - priorities for research efforts. Marine Ecology, doi:10.1111/maec.12616 59 Menzel Barraqueta, J.L., De Jonhg, T., Samanta, S., Achterberg, E.P., Bowie, A., Croot, P., Cloete, R., Gelado-Caballero, M.D., Klar, J.K.7, Middag, R., Loock, J., Remenyi, T., Wenzel, B., Roychoudhury, A. (2020) A first global oceanic compilation of aluminium observational data and regional statistics. Frontiers in Marine Sciences: Marine Biogeochemistry 7:468, doi: 10.3389/fmars.2020.00468 58 Sandi Smart, Sarah Fawcett, Haojia Ren, Ralf Schiebel, Alfredo Martinez-Garcia, Luca Stirnimann, Alakendra Roychoudhury, Gerald Haug, Daniel Signaman (2020) Ground-truthing the planktic foraminifer-bound nitrogen isotope paleo-proxy in the modern Southern Ocean. Geochemistry, Geophysics & Geosystems doi: 10.1029/2019GC008440 57 Johan Viljoen, Ian Weir, Susanne Fietz, Ryan Cloete, Jean Loock, Raissa Philibert, Alakendra N. Roychoudhury (2019) Links between phytoplankton community composition, macronutrients and trace metal distribution in the surface waters of the Atlantic Southern Ocean. Frontiers in Marine Sciences: Marine Biogeochemistrydoi.org/10.3389/fmars.2019.00295 56 Bjorn von der Heyden, Alakendra N Roychoudhury and Satish Myneni (2019) Iron-rich nanoparticles in the natural aquatic environments. Minerals, 9, 287, doi: 10.3390/min9050287 55 Mtshali, T.N., van Horsten, N.R., Thomalla, S.J., Ryan-Leogh, T.J., Nicholson, S-A., Roychoudhury, A. N., Bucciarelli, E., Sarthou, G., Tagliabue, A., Monteiro, P.M.S. (2019). Seasonal depletion of the dissolved iron reservoirs in the sub-Antarctic zone of the Southern Atlantic Ocean. Geophysical Research Letters, 46, pp. 4386-4395, doi: 10.1029/2018GL081355 54 Ryan Cloete; Jean C Loock; Thato N Mtshali; Susanne Fietz; Alakendra N Roychoudhury (2019) Winter and summer distributions of Copper, Zinc and Nickel along the International GEOTRACES section GIPY05: Insights into deep winter mixing. Chemical Geology, 511, pp 342-357, doi: 10.1016/j.chemgeo.2018.10.023 53 Johannes Viljoen, Raïssa Philibert, Natasha Van Horsten, Thato Mtshali, Alakendra N Roychoudhury, Sandy Thomalla, Susanne Fietz (2018) Phytoplankton response in growth, photophysiology and community structure to iron and light in the Polar Frontal Zone and Antarctic waters. Deep-Sea Research, Part 1,141, pp. 118 – 129. doi: 10.1016/j.dsr.2018.09.006 52 Von der Heyden, B., Frith, M.G., Bernasek, S., Tylizszak, T., Roychoudhury, A. N., Myneni, S.C.B. (2018) Geochemistry of Al and Fe in freshwater and coastal water colloids from the west coast of Southern Africa. 241, pp. 56-68 Geochemica et cosmochimica acta, doi: 10.1016/j.gca.2018.08.043 51 Baker, A., Routh J. and Roychoudhury A. N. (2018) n-Alkan-2-one biomarkers as proxy for palaeoclimate reconstruction in the Mfabeni fen, South Africa. Organic Geochemistry, 120, pp. 75-85, doi: 10.1016/j.orggeochem.2018.03.001 50 Das, S. Routh, J. Roychoudhury, A.N. Veldhuis, M.J.W. Ismail, H.E. (2017) Connecting pigment composition and dissolved trace elements to phytoplankton population in the southern Benguela Upwelling zone (St. Helena Bay). Journal of Marine Systems 176, pp. 13-23. 49 von der Heyden, B.; Roychoudhury, A. N.; Tyliszczak. T.; Myneni, S. C. (2017) Investigating nanoscale mineral composition: Iron L3-edge spectroscopic evaluation of iron oxide and oxy-hydroxide coordination. American mineralogist 102, pp. 674-685, doi: 10.2138/am-2017-5805 48 Baker, A., Pedentchouk, N. Routh J. and Roychoudhury A. N. (2017) Carbon isotope records of climatic variability in Mfabeni peatlands (South Africa) since the late Pleistocene. Quaternary Science Reviews 160, pp. 57-66, doi: 10.1016/j.quascirev.2017.02.009 47 Baker, A., Routh J. and Roychoudhury A. N. (2016) Biomarker records of palaeoenvironmental variations in sub-tropical southern Africa since the late Pleistocene: Evidence from a coastal peatland. Paleogeography, Paleoclimatology and Paleoecology, V 451,pp. 1–12, doi: 10.1016/j.palaeo.2016.03.011 46 Von der Heyden, B. and Roychoudhury A. N. (2015) Application, Chemical Interaction and Fate of Iron Minerals in Polluted Sediment and Soils. Current Pollution Reports, V 1, pp. 265-279, doi: 10.1007/s40726-015-0020-2 45 Von der Heyden, B. and Roychoudhury A. N. (2015) A review of colloidal iron partitioning and distribution in the open ocean, Marine Chemistry, V177(1), pp. 9-19, doi:10.1016/j.marchem.2015.05.010 44 S Das, J Routh and AN Roychoudhury (2015) Biogeochemistry of shallow lake sediments: a case study from Verlorenvlei, South Africa, Current Science, V 109(8), pp, 1486 -1491. 43 P. J. Lam, B. S.Twining, C Jendel, A.N. Roychoudhury, J. Resing, W. Geibert, P. Santschi, R. F. Anderson (2015) Methods for analyzing the composition and speciation of marine particles, Progress in Oceanography, V133, pp 32-42 42 A. N. Roychoudhury and J Petersen (2014) Geochemical evaluation of soils and groundwater affected by infiltrating effluent from evaporation ponds of a heavy mineral processing facility, West Coast, South Africa. Journal of Geochemical exploration 144; pp 478-491 41 Bjorn P. Von der Heyden, Emily J. Hauser, Bhoopesh Mishra, Gustavo A. Martinez, Andrew R. Bowie, Tolek Tyliszczak, Thato N. Mtshali, Alakendra N. Roychoudhury, Satish C.B. Myneni (2014) Ubiquitous presence of Fe(II) in aquatic colloids and its association with organic carbon. Environmental Science & Technology, Letters, 1; pp 387 – 392. 40 C. Clark, S. le Roux and A. N Roychoudhury (2014) The physicochemical controls on the formation of secondary Cu hydroxyl minerals in the arid Namaqualand soil system of South Africa. Applied Geochemistry 47; pp 52-60 39 A Baker, J. Routh, M. Blaauw and A.N. Roychoudhury (2014) Geochemical records of palaeoenvironmental controls on peat forming process in the Mfabeni peatland, Kwazulu Natal, South Africa since the late Pleistocene. Paleogeography, Paleoclimatology and Paleoecology 395; pp 95-106 38 A. N. Roychoudhury and D. Porter (Accepted with revision) Dissimilatory Sulfate Reduction in Hypersaline Coastal Pans: What is controlling sulfate uptake? Geochimica et Cosmochimica Acta 37 Coleen L. Moloney, Sean Fennessy, Mark J. Gibbons, Alakendra Roychoudhury, Frank A. Shillington, Bjorn P. von der Heyden, Kate Watermeyer (2013) What is the evidence for offshore marine ecosystem 1 change in South Africa? African Journal of Marine Science, V 35(3), pp 427-448. DOI: 10.2989/1814232X.2013.836135 36 Treasure, A.M., Moloney, C.L., Bester, M.N., McQuaid, C.D., Findlay, K.P., Best, P.B., Cowan, D.A., de Bruyn, P.J.N., Dorrington, R.A., Fagereng, A., Froneman, P.W., Grantham, G.H., Hunt, B.P.V., Meiklejohn, K.I., Pakhomov, E.A., Roychoudhury, A.N., Ryan, P.G., Smith, V.R., Chown, S.L. and Ansorge, I.J. (2013) South African research in the Southern Ocean: new opportunities but serious challenges. South African Journal of Science. V109, pp 1-4, DOI 10.1590/sajs.2013/a009 35 A. N. Roychoudhury, D. Cowan, D. Porter, and Angel Valverde (2013) Dissimilatory sulphate reduction in hypersaline pans: An integrated microbiological and geochemical study. Geobiology, 11(3); pp. 224-233, DOI: 10.1111/gbi.12027. 34 M Smith and A. N. Roychoudhury (2013) Mobilization of iron from rocks in a fractured aquifer: Lithological and geochemical controls. Applied Geochemistry. V31, pp 171-186, DOI: 10.1016/j.apgeochem.2013.01.002 33 B.P. von der Heyden, A.N. Roychoudhury, T.N. Mtshali, T. Tyliszczak and S.C.B. Myneni (2012) Significant Chemical Variations exist in the Fe-rich Nano- and Colloid-sized Particles in the South Atlantic and Southern Oceans. Science V338, pp 1199 – 1201. 32 Sebastiaan Swart, Nicolette Chang, Nicolas Fauchereau, Warren Joubert, Mike Lucas, Thato Mtshali, Alakendra Roychoudhury, Alessandro Tagliabue, Sandy Thomalla, Howard Waldron, Pedro M.S. Monteiro (2012) Southern Ocean Seasonal Cycle Experiment – 2012 (SOSCEx2012): Coupling of Climate and Carbon Cycling at the Seasonal Scale, South African Journal of Science. 189(3/4), pp 1-3. 31 Tagliabue, Alessandro, Mtshali, T., Aumont, O., Bowie, A. R., Klunder, M. B., Roychoudhury, A. N., and Swart, S (2012) A global compilation of over 13 000 dissolved iron measurements: focus on distributions and processes in the Southern Ocean, Biogeosciences 9, pp. 2333–2349, doi:10.5194/bg-9-2333-2012. 30 C. Clarke, J. Aguilar-Carrillo and A. N. Roychoudhury (2011) Quantification of drying induced acidity at the mineral-water interface using ATR FTIR spectroscopy. Geochimica et Cosmochimica Acta,V75, pp. 4846-4856; doi:10.1016/j.gca.2011.06.012 29 S. Staniland, A. N. Roychoudhury and D. Cowan (2010) Cobalt uptake and resistance to trace metals in Comamonas testosterone isolated from heavy-metal contaminated sites in the Zambian Copperbelt. Geomicrobiology Journal, V 27, pp 656-668; doi:10.1080/01490450903527994 28 A. Sako, A. Mills and A. N. Roychoudhury (2009) Rare earth and trace element geochemistry of termite mounds in central and northeastern Namibia: mechanisms for micro-nutrient accumulation. Geoderma V153, pp 217-230, doi: 10.1016/j.geoderma.2009.08.011 27 A. Sako, L. Lopez and A. N. Roychoudhury (2009) Adsorption and surface complexation modeling of palladium, rhodium and platinum in surficial semi-arid soils and sediment. Applied Geochemistry V 24(1), pp 86-95, doi:10.1016/j.apgeochem.2008.11.005 26 S. Das, J. Routh, and A. N. Roychoudhury (2009) Biomarker evidences of macrophyte and plankton community changes in a shallow lake, Zeekoevlei, South Africa. Journal of Paleolimnology V 41(3), pp 507-521, doi: 10.1007/s10933-008-9241-3 25 S. Das, J. Routh, A. N. Roychoudhury and J. V. Klump (2009) Phosphorus dynamics in shallow eutrophic lakes: an example from Zeekoevlei, South Africa. Hydrobiologia, V 619(1), pp 55-66, doi: 10.1007/s10750-008-9600-0 24 S. Das, J. Routh, and A. N. Roychoudhury (2008) Sources and historic changes in polycyclic aromatic hydrocarbons input in a shallow lake, Zeekoevlei, South Africa. Organic Geochemistry. V. 39, pp 1109-1112. doi: 10.1016/j.orggeochem.2008.04.005 23 S. Das, J. Routh, A. N. Roychoudhury and J. V. Klump (2008) Elemental (C, N, H and P) and stable isotope (δ15N and δ13C) signatures in sediments from Zeekoevlei, South Africa – A record of human intervention in the lake. Journal of Paleolimnology. Vol 39(3) pp 349-360, doi: 10.1007/s10933-007-9110-5 22 S. Das, J. Routh, A. N. Roychoudhury and J. V. Klump (2008) Major and trace element geochemistry in Zeekoevlei, South Africa: A lacustrine record of present and past processes. Applied Geochemistry V23, pp. 2496–2511. doi: 10.1016/j.apgeochem.2008.02.011 21 D. Porter, A. N. Roychoudhury and D. Cowan (2007) Dissimilatory Sulfate Reduction in Hypersaline Coastal Pans: Activity Across a Salinity Gradient. Geochimica et Cosmochimica Acta. V 71(21) pp 5102-5116. doi: 10.1016/j.gca.2007.08.023 20 A. N. Roychoudhury, (2007) Spatial and seasonal variations in depth profiles of trace metals in saltmarsh sediments from Sapelo Island, Georgia USA. Estuarine, Coastal and Shelf Science Vol 72(4) pp 675-689. doi: 10.1016/j.ecss.2006.12.003 19 A. N. Roychoudhury, and McCormick, D. W. (2006) Kinetics of sulfate reduction in a coastal aquifer contaminated with petroleum hydrocarbons. Biogeochemistry V81(1), pp. 17-31. doi: 10.1007/s10533-006-9027-5. 18 A. N. Roychoudhury, and Merrett, G. L. (2006) Redox pathways in a petroleum contaminated shallow, sandy aquifer: Iron and sulphate reduction. The Science of the Total Environment, Vol 366(1) pp 262-274, doi: 10.1016/j.scitotenv.2005.10.024 17 A. N. Roychoudhury, and Starke M. (2006) Partitioning and mobility of trace metals in the Blesbokspruit: Impact of mining in the East Rand, South Africa. Applied Geochemistry V. 21(6) pp 1044-1063 doi: 10.1016/j.apgeochem.2006.02.024. 16 A. N. Roychoudhury, (2006) Time Dependent Calibration of a Sediment Extraction Scheme. Marine Pollution Bulletin, V. 52(4), pp. 397-403. doi: 10.1016/j.marpolbul.2005.09.033. 15 G. L. Merrett and A. N. Roychoudhury (2005) Anaerobic degradation of hydrocarbon compounds in a petroleum contaminated aquifer. In (Ed., Govil, P. K.) Soil and Groundwater Contamination: Risk Assessment and Remedial Measures. National Geophysical Research Institute, Hyderabad, India, pp. 1-14. 14 P.M.S. Monteiro and A. N. Roychoudhury (2005) Spatial characteristics of sediment trace metals in an eastern boundary upwelling retention area (St. Helena Bay, South Africa): A hydrodynamic-biological pump hypothesis. Estuarine, Coastal & Shelf Sci., V 65 (1-2), pp. 123-134. 13 C. Koretsky, P. Van Cappellen, A. N. Roychoudhury, E. Viollier, T DiChristina, J. Kostka, C. Moor (2005) Saltmarsh pore water geochemistry does not correlate with microbial community structure. Estuarine, Coastal & Shelf Science, V62(1-2), pp. 233-251. 12 A. N. Roychoudhury (2004) Sulfate metabolism among thermophiles and hyperthermophiles in aquatic sediments. Biochemical Society Transactions, V32(2), pp. 172 - 174. 11 A. N. Roychoudhury (2004) Sulfate respiration in extreme environments: A kinetic study. Geomicrobiology Journal, V21(1), pp. 33-43. 10 P. Inglett, E. Viollier, A. N. Roychoudhury, and P. Van Cappellen (2004) A new idea in marsh coring: The wedge. Soil Science Society of America, Journal, V 68(2), pp. 705-708. 9 A. N. Roychoudhury, J. Kostka, and P. Van Cappellen (2003) Pyritization: A palaeoenvironmental and redox proxy reevaluated. Estuarine, Coastal & Shelf Science, V 57(5-6), pp. 1183-1193. 8 A. N. Roychoudhury, P. Van Cappellen, J. Kostka, and E. Viollier (2003) Kinetics of microbially mediated reactions: Dissimilatory sulfate reduction in saltmarsh sediments (Sapelo Island, Georgia, USA), Estuarine, Coastal & Shelf Science, V56(5-6), pp 1001-1010. 7 J. Kostka, A. N. Roychoudhury, P. Van Cappellen (2002) Rates and controls of sulfate reduction across spatial and temporal gradients in Georgia saltmarsh sediments. Biogeochemistry, V. 60(1), pp. 49 – 76 6 A. N. Roychoudhury, (2001) Dispersion in unconsolidated aquatic sediments. Estuarine, Coastal and Shelf Science, V. 53(5), pp. 745-757. 5 K. L. Lowe, T. J. DiChristina, A. N. Roychoudhury, and P. Van Cappellen (2000) Microbiological and geochemical characterization of microbial Fe(III) reduction in saltmarsh sediments. Geomicorbiology Journal, V. 17, pp. 163-178. 4 E. Viollier, P. Inglett, K. Hunter, A. N. Roychoudhury, and P. Van Cappellen (2000) The ferrozine method revisited: Fe(II)/Fe(III) determination in natural waters. Applied Geochemistry V. 15, pp. 785-790. 3 A. N. Roychoudhury, E. Viollier, and P. Van Cappellen (1998) A plug-flow-through reactor for studying biogeochemical reactions in undisturbed aquatic sediments. Applied Geochemistry, V. 13, pp. 269-280. 2 P. Van Cappellen, E. Viollier, and A. N. Roychoudhury, (1998) Biogeochemical cycles of manganese and iron at the oxic-anoxic transition of a stratified marine basin (Orca basin, Gulf of Mexico). Environmental Science and Technology, V. 32(19), pp. 2931-2939. 1 A. N. Roychoudhury and P. Van Cappellen (1996) A flow-through reactor for extracting kinetics of biogeochemical reactions from intact sediments. In (Raiswell, R., ed.) Proceedings of the Fourth International Symposium on the Geochemistry of the Earth's Surface. pp. 121-124 |