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Luis M. "Louie" TupasPersonalAssistant Specialist Oceanographer, 1993 - present Graduate Faculty, 1995 - present Department of Oceanography School of Ocean and Earth Science and Technology University of Hawaii at Manoa 1000 Pope Road, Honolulu, Hi 96822 Phone: (808) 956-3311 Fax: (808) 956-9516 email: ltupas@soest.hawaii.edu Positions heldPost-doctoral Researcher, 1991-1993 SOEST, University of Hawaii at Manoa Lecturer, Department of Earth Sciences, 1988-1990 Japan Meteorological College Instructor, Department of Zoology, 1984-1985 University of the Philippines, Diliman Research Associate, Marine Sciences Institute, 1983-1985 University of the Philippines, Diliman EducationPh.D. Oceanography, 1991, Ocean Research Institute, The University of Tokyo M.Sc. Oceanography, 1988, Ocean Research Institute, The University of Tokyo Diploma, Japanese Language and Culture, 1986, The University of Tokyo B.Sc. Marine Biology, 1983, University of the Philippines Dissertation and ThesisPh.D. Dissertation: Nitrogen metabolism by heterotrophic bacterial populations and its ecological significance in coastal marine waters M.Sc. Thesis: Production and utilization of amino acid nitrogen in marine coastal environments B.Sc. Thesis: Effects of sedimentation on the growth and survival of colonial and solitary corals Research interestsMicrobial ecology and biochemistry, biogeochemistry of carbon and nitrogen Research Grants and AwardsThe Hawaii Ocean Time-series Program: JGOFS component (Co-Principal Investigator). NSF-Division of Ocean Sciences. 1 June 1993 - 31 July 1998. Japanese Government Research Award for Foreign Specialists. Japanese Ministry of Education. March 1996. Seikai National Fisheries Research Institute, Nagasaki, Japan and Ocean Research Institute, The University of Tokyo, Japan. Refereed PublicationsEmerson, S., P. Quay, D. Karl, C. Winn, L. Tupas and M. Landry. 1997. Experimental determination of the carbon flux from open-ocean surface waters. Nature (in press). Karl, D., R. Letelier, L. Tupas, J. Dore, J. Christian, D. Hebel. 1997. The role of nitrogen fixation in biogeochemical cycling in the subtropical North Pacific Ocean. Nature 388: 533-538. Dore, J.E., T. Houlihan, D.V. Hebei, G.Tien, L. Tupas and D.M. Karl. 1996. Freezing as a method of sample preservation for the analysis of dissolved inorganic nutrients in seawater. Mar. Chem. 53:173-185. Karl, D.M., J.R. Christian, J.E. Dore, D.V. Hebel, R.M. Letelier, L.M. Tupas and C.D. Winn. 1996. Seasonal and interannual variability in primary production and particle flux at Station ALOHA. Deep-Sea Res. 43: 539-568. Sharp, J.H., R. Benner, L. Bennett, C.A. Carlson, S.E. Fitzwater, E.T. Peltzer and L.M. Tupas. 1995. Analyses of dissolved organic carbon in seawater: The JGOFS EQPAC methods comparison. Mar. Chem. 48: 91-108. Karl, D.M., R. Letelier, D. Hebel, L. Tupas, J. Dore, J. Christian and C. Winn. 1995. Ecosystem changes in the North Pacific subtropical gyre attributed to the 1991-92 El Nino. Nature 373: 230-234. Tupas, L.M., I. Koike, D.M. Karl and 0. Holm-Hansen. 1994. Nitrogen metabolism by heterotrophic bacterial assemblages in Antarctic coastal waters. Polar Biol. 14: 195-204. Tupas, L.M., B.N. Popp and D.M. Karl. 1994. Dissolved organic carbon in oligotrophic waters: experiments on sample preservation, storage and analysis. Mar. Chem. 45: 207-216. Koike, I and L.M. Tupas. 1993. Total dissolved nitrogen in the Northern North Pacific Ocean assessed by a high-temperature combustion method. Mar. Chem. 41: 209-214. Tupas, L.M., I. Koike and O. Holm-Hansen. 1991. Nitrogen dynamics in Antarctic coastal waters during a spring phytoplankton bloom (in Japanese). Gekkan Kaiyo (Marine Science Monthly) 23: 694-702. Tupas, L.M. and I. Koike. 1991. Simultaneous uptake and regeneration of ammonium by mixed assemblages of heterotrophic marine bacteria. Mar. Ecol. Prog,. Ser. 70: 273-282. Tupas, L.M. and I. Koike. 1990. Amino acid and ammonium utilization by heterotrophic marine bacteria grown in enriched seawater. Limnol. Oceanogr. 35: 1145-1155. Tupas, L.M. and N. E. Montano. 1987. Effects of aqueous alkaline extracts from Philippine seaweeds as a foliar spray on crops. Phil. J. Sci. 17: 29-36. Montano, N.E. and L.M. Tupas. 1987. Growth response of some plants to treatment with aqueous extracts from Sargassum polycystum and Hydroclathrus clathratus at various pH levels. Phil. J. Sci. 17: 11-22. Montano, N.E., L.M. Tupas and A.H. Luistro. 1985. Studies on Philippine semi-refined carageenan. 1. Water insoluble matter, total and acid insoluble ash, and viscosity and absorbance of solutions. Fish. Res. J. Phil. 10: 35-50. Other PublicationsTupas, L.M. 1994. Euphotic zone nitrate variability in the central North Pacific Gyre at the Hawaii Ocean Time-series Station ALOHA. International WOCE Newsletter 17: 21-23. Tupas, L.M., I. Koike and 0. Holm-Hansen. 1990. RACER: Uptake rates of ammonium and nitrate by phytoplankton populations during the 1989 austral spring bloom. Antarc. J. US 25(5): 146-148. Tupas, L.M., I. Koike and 0. Holm-Hansen. 1990. RACER: Microbial uptake and regeneration of ammonium during the 1989 austral spring bloom. Antarc. J. US. 25(5): 154-155. Alino, P.M., G.J.B. Cajipe, E.T. Ganzon-Fortes, W.R.Y. Licuanan, N.E. Montano and L.M. Tupas. 1990. The use of marine organisms in folk medicine and horticulture: a preliminary study. Seaweed Information Center, University of the Philippines. Montano, N.E. and L.M. Tupas. 1990. Plant growth hormonal activities of aqueous extracts from Philippine seaweeds. Seaweed Information Center, University of the Philippines. Tupas, L.M. and I. Koike. 1988. Excretion of nitrogen compounds by some benthic marine animals. Ohtsuchi Mar. Res. Cent. Rep. 14: 55-63. AbstractsTupas, L.M. 1996. Deep-sea biogeochemical fluxes at US-JGOFS time-series Station ALOHA. Fifth MASFLECS Symposium. Nagasaki, Japan. Hebel, D.V., D.M. Karl, J.R. Christian, J.E. Dore, R.M. Letelier, L.M. Tupas and C.D. Winn. 1996. Seasonal and interannual variability in primary production and particle flux at Station ALOHA. EOS 76: OS85. Tupas, L.M., M.P. Sampson and D.M. Karl. 1996. Stable nitrogen isotopic analysis of sinking particulate matter at the Hawaii Ocean Time-series site. EOS 76: OS86. Tupas, L.M. 1995. Unexpected biogeochemical cycling pathways at the US-JGOFS time series station ALOHA. 1995 Gordon Research conference on Chemical Oceanography, New England College, Henniker, New Hampshire, USA. Fujieki, L.A., D.V. Hebel, L.M. Tupas and D.M. Karl. 1994. Hawaii Ocean Time-series data organization and graphical system (HOT-DOGS). The Oceanography Society Pacific Basin Meeting. Honolulu, Hawaii, USA. Houlihan, T., J. Dore, L. Tupas, D. Hebel, G. Tien and D Karl. 1994. Freezing as a method of preservation for seawater dissolved nutrient and organic carbon samples. The Oceanography Society Pacific Basin Meeting. Honolulu, Hawaii, USA. Tupas, L., B. Popp and D. Karl. 1994. Dissolved organic carbon measurements at Station ALOHA by high temperature catalytic oxidation: Characteristics and variation in the water column. The Oceanography Society Pacific Basin Meeting. Honolulu, Hawaii, USA. Sharp, J.H., R. Benner, L. Bennett, C.A. Carlson, S.E. Fitzwater, E.T. Peltzer and L.M. Tupas. 1993. The Equatorial Pacific intercalibration analyses of dissolved organic carbon in seawater. Joint Meeting of the American Society of Limnology and Oceanography and Society of Wetland Scientists. Edmonton, Alberta, Canada. Sharp, J.H., R. Benner, L. Bennett, C.A. Carlson, S.E. Fitzwater, E.T. Peltzer and L.M. Tupas. 1993. Dissolved organic carbon: intercalibration analyses with Equatorial Pacific samples. Third Scientific Meeting of The Oceanography Society, Seattle, Washington, USA. Tupas, L.M., B.N. Popp and D.M. Karl. 1992. Dissolved organic carbon in oligotrophic waters; experiments on sample preservation, storage and analysis. Fall meeting of the American Geophysical Union, San Francisco, California. EOS 73 (43): 287. Tupas, L.M., B.N. Popp and D.M. Karl. 1992. Preservation, storage and analysis of samples for the determination of dissolved organic carbon in seawater. 1992 Gordon Research Conference on Organic Geochemistry, Colby-Sawyer College, New London, New Hampshire, USA. Tupas, L.M. and I. Koike. 1991. Carbon and nitrogen fluxes in Antarctic coastal waters. Symposium on Polar Studies, Fall Meeting of the Oceanographical Society of Japan, Tokyo,Japan. Tupas, L.M. and I. Koike. 1989. Utilization of ammonium and dissolved organic nitrogen by mixed populations of heterotrophic marine bacteria. Fifth International Congress on Microbial Ecology, Kyoto, Japan. Tupas, L.M. and I. Koike. 1988. Microbial utilization of amino acids from Mytilus edulis. Fall meeting of the Oceanographical Society of Japan, Tokyo, Japan. Tupas, L.M. and N.E. Montano. 1985. Growth hormone-like extracts from various marine macro- algae. First Philippine-US Phycology Workshop, Manila, Philippines. Technical ReportsKarl, D., L. Tupas, F. Santiago-Mandujano, C. Nosse, D. Hebel, E. Firing and R. Lukas. 1996 Hawaii Ocean Time-series Program: Data Report 7: 1995. University of Hawaii, School of Ocean and Earth Science and Technology Technical Report 96-09. 228 pages. Tupas, L.M., F. Santiago-Mandujano, D. Hebel, E. Firing, R. Lukas and D. Karl. 1994. Hawaii Ocean Time-series Program: Data Report 6: 1994. University of Hawaii, School of Ocean and Earth Science and Technology Technical Report 95-06. 199 pages. Tupas, L.M., F. Santiago-Mandujano, D. Hebel, E. Firing, F. Bingham, R. Lukas and D. Karl. 1994. Hawaii Ocean Time-series Program: Data Report 5: 1993. University of Hawaii, School of Ocean and Earth Science and Technology Technical Report 94-05. 156 pages. Tupas, L.M., F. Santiago-Mandujano, D. Hebel, R. Lukas, D. Karl and E. Firing. 1993. Hawaii Ocean Time-series Program: Data Report 4: 1992. University of Hawaii, School of Ocean and Earth Science and Technology Technical Report 93-14. 248 pages. Tupas, L.M. and I. Koike. 1991. Nitrogen utilization by water column bacterial populations in the Western North Pacific Ocean (in Japanese). In: I. Koike (ed.) Preliminary report of the Hakuho-Maru cruise KH 91-3, JGOFS Western North Pacific Ocean. Ocean Research Institute, The University of Tokyo. Tupas, L.M. and I. Koike. 1991. Carbon and nitrogen analysis of sub-micron particles in waters of the Western North Pacific Ocean (in Japanese). In: I. Koike (ed.) Preliminary report of the Hakuho-Maru cruise KH 91-3, JGOFS Western North Pacific Ocean. Ocean Research Institute, The University of Tokyo. Tupas, L.M. and I. Koike. 1991. Dissolved amino acid concentrations in the water column of the Western North Pacific Ocean (in Japanese). In: I. Koike (ed.) Preliminary report of the Hakuho-Maru cruise KH 91-3, JGOFS Western North Pacific Ocean. Ocean Research Institute, The University of Tokyo. Tupas, L.M. and I. Koike. 1987. Excretion of organic and inorganic material by microzooplankton and the utilization of excreta by heterotrophic marine bacteria in the North Pacific Ocean. In: A. Hattori (ed.) Preliminary report of the Hakuho-Maru cruise KH 86-3, Bering Sea and Northern North Pacific Ocean. Ocean Research Institute, The University of Tokyo. Tupas, L.M. and I. Koike. 1987. Vertical distribution of total dissolved nitrogen in the Northern North Pacific Ocean. In: A. Hattori (ed.) Preliminary report of the Hakuho-Maru cruise KH 86-3, Bering Sea and Northern North Pacific Ocean. Ocean Research Institute, The University of Tokyo. Tupas, L.M. and I. Koike. 1987. Growth and carbon conversion efficiencies of bacterial populations in the Northern North Pacific Ocean. In: A. Hattori (ed.) Preliminary report of the Hakuho-Maru cruise KH 86-3, Bering Sea and Northern North Pacific Ocean. Ocean Research Institute, The University of Tokyo. ReviewerLimnology and Oceanography National Science Foundation, Division of Ocean Sciences Division of Environmental Biology Division of Polar Program Membership in Scientific OrganizationsAmerican Society of Limnology and Oceanography American Geophysical Union American Society of Microbiology Oceanographical Society of Japan Japanese Society of Microbial Ecology |