Contents

TROCAS publications

TROCAS publications

In Review

  • Mu, L., J.E. Richey, N.D. Ward, A.V. Krusche, A. Montebelo, C.E. Rezende, P.M. Medeiros, B.P. Page, and P.L. Yager. (in review). Carbonate and nutrient contributions from the Amazon River to the western tropical North Atlantic Ocean. Global Biogeochemical Cycles.

  • Neu, V., M.G.S. Araújo, V.M. Guedes, N.D. Ward, M.M. Ribeiro, J.E. Richey, and A.V. Krusche. (in review). Composition and Flow of Dissolved and Particulate Carbon and Nitrogen in the Lower Tocantins River. J. Geophysical Res: Biogeosciences.

2022

  • Richey, J.E., R.G.M. Spencer, T. W. Drake, and N.D. Ward. (2022). Fluvial Carbon Dynamics across the Land to Ocean Continuum of Great Tropical Rivers: the Amazon and Congo. In Congo Basin Hydrology, Climate, and Biogeochemistry: A Foundation for the Future, Geophysical Monograph 269, First Edition, English Version. Edited by R.M. Tshimanga, G.D. Moukandi N’kaya, and D. Alsdorf. 2022 American Geophysical Union. John Wiley & Sons, Inc. doi:10.1002/9781119657002.ch20

2021

  • Bertassoli, D.J. Jr., H. O. Sawakuchi, K. R. de Araújo, M. G. P. de Camargo, V. A. T. Alem, T. S. Pereira, A. V. Krusche, D. Bastviken, J. E. Richey, and A. O. Sawakuchi (2021). How green can Amazon hydropower be? Net carbon emission from the largest hydropower plant in Amazonia. Sci. Adv. 7, 26, doi:10.1126/sciadv.abe1470

  • Cunha, A.C., C.H.M. de Abreu, J. L. P. Crizanto, H.F.A. Cunha, A.U. Brito, and N.N. Pereira. (2021). Modeling pollutant dispersion scenarios in high vessel-traffic areas of the Lower Amazon River. Marine Pollution Bulletin 168, 112404. doi:10.1016/j.marpolbul.2021.112404

  • Less, D.F.S., N.D. Ward, J.E. Richey, and A.C. da Cunha. (2021). Seasonal and Daily Variation of Hydrodynamic Conditions in the Amazon River Mouth: influence of discharge and tide on flow velocity. Journal of Coastal Research, 37(6):1181-1192, doi:10.2112/JCOASTRES-D-21-00010.1

  • Sawakuchi, H.O, D. Bastviken, A. Enrich-Prast, N.D. Ward, P.B .Camargo, and J.E Richey. (2021). Low diffusive methane emissions from the main channel of a large Amazonian run-of-the-river reservoir attributed to high methane oxidation. Front. Environ. Sci., 08 April 2021 doi:10.3389/fenvs.2021.655455

  • Valerio, A.M.; Kampel, M.; Ward, N.D.; Sawakuchi, H.O.; Cunha, A.C.; and Richey, J.E. (2021). Assessment of partial pressure of carbon dioxide in the Amazon River plume using in situ and remote sensing data. Cont. Shelf. Res. 215, 104348, doi:10.1016/j.csr.2021.104348

  • Valerio, A.d.M., M. Kampel, V. Vantrepotte, N.D. Ward, and J.E. Richey, (2021). Classification of Lower Amazon Waters Based on In Situ Data and Sentinel-3 Ocean and Land Color Instrument Imagery. Remote Sens. 13, 3057. doi:10.3390/rs13163057

2013 - 2020

  • Barros, D.J. and Bento, M.S. and Ferreira, M.S. and Carmo, J.B. and Toppa, R.H. and Neu, V. and Varesche, M.B.A. and Morais, P.B. and and Navarrete, A.A.. (2019). Methane, Microbes and Models in Amazonian Floodplains: State of the Art and Perspectives.  Changing Ecosystems and Their Services. doi:10.5772/intechopen.90247

  • Bertassoli, D.J., A.O. Sawakuchi, H.O. Sawakuchi, F.N. Pupim, G.A. Hartmann, M.M. McGlue, C.M. Chiessi, M.Zabel, E. Schefuß, T.S. Pereira, R.A. Santos, S.B. Faustino, P.E. Oliveira, and D.C. Bicudo. 2017. The Fate of Carbon in Sediments of the Xingu and Tapajós Clearwater Rivers, Eastern Amazon. Front. Mar. Sci., 22, doi:10.3389/fmars.2017.00044

  • Bianchi, Thomas S. and Ward, Nicholas D.. (2019). Editorial: The Role of Priming in Terrestrial and Aquatic Ecosystems.  Frontiers in Earth Science. 7 doi:10.3389/feart.2019.00321

  • Coppola, Alysha I.; Seidel, Michael D.; Ward, Nicholas S.; Viviroli, Daniel N.; Nascimento, Gabriela W.; Haghipour, Negar E.; Revels, Brandi I.; Abiven, Samuel W.; Jones, Matthew; Richey, Jeffrey; Eglinton, Timothy; Dittmar, Thorsten; and Schmidt, Michael. (2019). Marked isotopic variability within and between the Amazon River and marine dissolved black carbon pools.  Nature Communications. 10 (1) doi:10.1038/s41467-019-11543-9

  • Cunha, A.C., and L.S.L. Sternberg. (2018). Using stable isotopes 18O and 2H to quantify the relationship between evaporation and water quality in four estuarine Amazonian shallow lakes. Hydrological Processes.  v. 32, p. 1188-1201, 2018. doi: 10.1002/hyp.1146

  • Cunha, A.C., K. Mustin, E.S. dos Santos, É.W.G. dos Santos, M.C. Guedes, H.F.A Cunha, P.C. Rosman, and L.S.L Sternberg (2017). Hydrodynamics and seed dispersal in the lower Amazon. Freshwater Biology. doi:10.1111/fwb.12982

  • da Silva, Geison Carlos; Medeiros de Abreu, Carlos Henrique; Ward, Nicholas D.; Belúcio, Liana Pereira; Brito, Daímio Chaves; Cunha, Helenilza Ferreira; and da Cunha, Alan Cavalcanti. (2020). Environmental Impacts of Dam Reservoir Filling in the East Amazon.  Frontiers in Water.    doi:10.3389/frwa.2020.00011

  • de Araújo, Kleiton R.; Sawakuchi, Henrique O.; Bertassoli Jr., Dailson J.; Sawakuchi, André O.; da Silva, Karina D.; Vieira, Thiago B.; Ward, Nicholas D.; and Pereira, Tatiana S.. (2019). Carbon dioxide (CO 2 ) concentrations and emission in the newly constructed Belo Monte hydropower complex in the Xingu River, Amazonia.  Biogeosciences. 16 (18) 3527 to 3542. doi:10.5194/bg-16-3527-2019

  • Doherty, M., P.L. Yager, M.A. Moran, V.J. Coles, C.S. Fortunato, A.V. Krusche, P.M. Medeiros, J.P. Payet, J.E. Richey, B.M. Satinsky, H.O. Sawakuchi, N.D. Ward, and B.C. Crump. (2017). Bacterial biogeography across the Amazon river-ocean continuum. Frontiers in Microbiology. doi:10.3389/fmicb.2017.00882

  • dos Santos, E.S., P.P. P. Lopes, H.H.Silva Pereira, O.Ol. Nascimento, C.D. Rennie, L.S.L.R. Sternberg, and A.C. da Cunha. 2018. The impact of channel capture on estuarine hydro-morphodynamics and water quality in the Amazon delta. Science of the Total Environment 624 (2018) 887–899. doi:10.1016/j.scitotenv.2017.12.211

  • Faria, F., P Jaramillo, H. Sawakuchi, J. Richey, and N. Barros (2015). Estimating greenhouse gas emissions from future Amazonian hydroelectric reservoirs. Environ. Res. Lett. 10, 124019, doi:10.1088/1748-9326/10/12/124019

  • Forsberg, B.R., J.M. Melack, J.E. Richey, and T.P. Pimentel. (2017). Regional and seasonal variability in planktonic photosynthesis and community respiration in Amazon floodplain lakes. Hidrobiologia. doi:10.1007/s10750-017-3222-3

  • Gabriel, Gabriele V.M.; Oliveira, Luciana C.; Barros, Dayane J.; Bento, Marília S.; Neu, Vania H.; Toppa, Rogério B.; Carmo, Janaina A.; and Navarrete, Acacio. (2020). Methane emission suppression in flooded soil from Amazonia.  Chemosphere. 250 (C) 126263. doi:10.1016/j.chemosphere.2020.126263

  • Gagne-Maynard, W.C, R.G Keil, N.D Ward, D.C Brito, A.C Cunha, A.M. Valerio, H.O. Sawakuchi, V. Neu, A.V Krusche, and J.E. Richey. 2017. Assessment of respiration and production in the lower Amazon River based on isotopic signatures of dissolved oxygen. Front. Mar. Sci doi:10.3389/fmars.2017.00026

  • Galeron, M.-A., Radakovitch, O., Charrière, B., Vaultier, F , Volkman, J.K., Bianchi, T.S., Ward, N.D., Medeiros, P.M., Sawakuchi, H.O., Tank, S., Rontani, J..F. (2018) Lipoxygenase-induced autoxidative degradation of terrestrial particulate organic matter in estuaries: a widespread process enhanced at high and low latitudes. Organic Geochemistry. doi:10.1016/j.orggeochem.2017.10.013

  • Kuhn, Catherine; de Matos Valerio, Aline; Ward, Nick; Loken, Luke; Sawakuchi, Henrique Oliveira; Kampel, Milton; Richey, Jeffrey; Stadler, Philipp; Crawford, John; Striegl, Rob; Vermote, Eric; Pahlevan, Nima; Butman, David. (2019). Performance of Landsat-8 and Sentinel-2 surface reflectance products for river remote sensing retrievals of chlorophyll-a and turbidity.  Remote Sensing of Environment. 224 (C) 104 to 118 doi:10.1016/j.rse.2019.01.023

  • Medeiros, P.M., M. Seidel, N.D. Ward, E.J. Carpenter, H.R. Gomes, J. Niggemann, A.V. Krusche, J.E. Richey, P.L. Yager, and T. Dittmar. (2015). Fate of the Amazon River Dissolved Organic Matter in the Tropical Atlantic Ocean. Global Biogeochemical Cycles. 29:677-690. doi:10.1002/2015GB005115

  • Neu, V., N.D. Ward, A.V. Krusche, and C. Neill. 2016. Dissolved organic and inorganic carbon flow paths in an Amazonian transitional forest. Frontiers in Marine Science. doi:10.3389/fmars.2016.00114

  • Satinsky, B., Smith, C.B., Sharma, S., Ward, N.D., Krusche, A.V., Richey, J.E., Yager, P.L., Crump, B.C., Moran, M.A. 2017. Microbial gene expression patterns in the lower Amazon River. Frontiers in Marine Science. doi:10.3389/fmars.2017.00253

  • Satinsky, B.M. C.S. Fortunato, M. Doherty, C.B. Smith, S. Sharma, N.D. Ward, A.V. Krusche, P.L. Yager, J.E. Richey., M.A. Moran, and B.C. Crump. 2015. Metagenomic and metatranscriptomic inventories of the Amazon River, May 2011. Microbiome. 3:39 doi:10.1186/s40168-015-0099-0

  • Sawakuchi, H., D. Bastviken, A. Sawakuchi, A. Krusche, M.V.B. Ballester, and J.E. Richey. 2014. Methane emissions from the main Amazonian Rivers and their contribution to the global methane budget. Global Change Biology (2014), doi:10.1111/gcb.12646

  • Sawakuchi, H.O, V. Neu, N.D. Ward, M.L.C. Barros, A.M. Valerio, W. Gagne-Maynard, A.C. Cunha, D.F. S. Less, J.E. M. Diniz, D.C. Brito, A.V. Krusche, and J.E. Richey. 2017. Carbon dioxide emissions along the lower Amazon River. Front. Mar. Sci. doi:10.3389/fmars.2017.00076

  • Sawakuchi, H.O., D. Bastviken, A.O. Sawakuchi, N.D. Ward, C.D. Borges, S. M. Tsai, J.E. Richey, M.V.R. Ballester, and A.V. Krusche. (2016). Oxidative mitigation of aquatic methane emissions in large Amazonian rivers. Global Change Biology (2016) 22, 1075–1085, doi:10.1111/gcb.13169

  • Seidel, M., P.L. Yager, N.D. Ward, E.J. Carpenter, H.R. Gomes, A.V. Krusche, J.E. Richey, T. Dittmar, and P.M. Medeiros, P.M. (2015). Molecular level transformations of dissolved organic matter in the river to ocean continuum of the Amazon. Marine Chemistry. 177:218-231. doi:10.1016/j.marchem.2015.06.019

  • Seidel, M., T. Dittmar, N.D. Ward, A.V. Krusche, J.E. Richey, P.L. Yager, and P.M. Medeiros (2016). Seasonal and spatial variability of dissolved organic matter composition

  • in the lower Amazon River. Biogeochemistry131:281–302. doi:10.1007/s10533-016-0279-4

  • Silva, B.S.O, F.H. Coutinho, G.B. Gregoracci, L. Leomil, L.S. Oliveira, A. Fróes, D. Tschoeke, A.C. Soares, A.S. Cabral, N.D. Ward, J.E. Richey, A.V. Krusche, P.L. Yager, C.E. Rezende, C.C. Thompson, and F.L. Thompson. (2017). Virioplankton assemblage structure in the lower river and ocean continuum of the Amazon. mSphere. doi:10.1128/mSphere.00366-17

  • Valerio, A.M., M. Kampel, V. Vantrepotte, N.D. Ward, H.O. Sawakuchi, D.F. da Silva, V. Neu, A. Cunha, and J. Richey. 2018. Using CDOM optical properties estimating DOC concentrations and pCO2 in the Lower Amazon River. Optics Express 26. V

  • Ward, N.D. 2017. Editorial: Integrative Research on Organic Matter Cycling Across Aquatic Gradients. Frontiers in Marine Sciences 4. doi:10.3389/fmars.2017.00131

  • Ward, N.D., A.V. Krusche, H.O. Sawakuchi, D.C. Brito, A.C. Cunha, J.M.S. Moura, R. da Silva, P.L. Yager, R.G. Keil, and J.E. Richey, (2015) The compositional evolution of dissolved and particulate organic matter along the lower Amazon River—Óbidos to the ocean. Marine Chemistry. 177: 244-256. doi:10.1016/j.marchem.2015.06.013

  • Ward, N.D., H.O. Sawakuchi, V. Neu, D.F.S. Less, A. M. Valerio, Al.C. Cunha, M.Kampel, T.S. Bianchi, A.V. Krusche, J.E. Richey, and R.G. Keil. (2018). Velocity-amplified microbial respiration rates in the lower Amazon. Limnology and Oceanography Letters doi:10.1002/lol2.10062

  • Ward, N.D., R.G. Keil, P.M. Medeiros, D.C. Brito, A.C. Cunha, T. Dittmar, P.L. Yager, A.V. Krusche, and J.E. Richey. (2013). Degradation of terrestrially-derived lignin macromolecules in the Amazon River. Nature Geoscience. doi:10.1038/NGEO1817

  • Ward, N.D., T.S. Bianchi, H.O. Sawakuchi, W. Gagne-Maynard, A.C. Cunha, D.C. Brito, V. Neu, A. de Matos Valerio, R. da Silva, A.V. Krusche, J.E. Richey, and R.G. Keil. (2016). The reactivity of plant-derived organic matter and the potential importance of priming effects along the lower Amazon River. J. of Geophysical Res. Biogeosciences. 121. doi:10.1002/2016JG003342

  • Ward, N.D., T.S. Bianchi, P.M. Medeiros, M. Seidel, J.E. Richey, R.G. Keil, and H.O. Sawakuchi. 2017. Where Carbon Goes When Water Flows: Carbon Cycling Across the Aquatic Continuum. Front. Mar. Sci doi:10.3389/fmars.2017.00007

  • Ward, N.D.; L., Megonigal, J.P.; Bond-Lamberty, B.; Bailey, V.; Butman, D.; Canuel, E.A.; Diefenderfer, H.; Ganju, N.K.; Goñi, M.A.; Graham, E.B.; Hopkinson, C.S.; Khangaonkar, T.; Langley, J.A.; McDowell, N.G.; Myers-Pigg, A.N.; Neumann, R.B.; Osburn, C.L.; Price, R.M.; Rowland, J.; Sengupta, A.; Simard, M.; Thornton, P.E.; Tzortziou, M.; Vargas, R.; Wesienhorn, P.B.; and Windham-Myers, L. (2020). Representing the function and sensitivity of coastal interfaces in Earth System Models. Nature Communications. doi:10.1038/s41467-020-16236-2

  • Ward, Nicholas D.; Sawakuchi, Henrique O.; Richey, Jeffrey E.; Keil, Richard G.; and Bianchi, Thomas S.. (2019). Enhanced Aquatic Respiration Associated with Mixing of Clearwater Tributary and Turbid Amazon River Waters.  Frontiers in Earth Science. 7  doi:10.3389/feart.2019.00101

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