Search Results - "Tupas, Luis M."

Seasonal and Interannual Variability in Sources of Nitrogen Supporting Export in the Oligotrophic Subtropical North Pacific Ocean by Dore, John E., Brum, Jennifer R., Tupas, Luis M., Karl, David M.

“…Over timescales of months to years, the export of organic nitrogen from the oceanic euphotic zone (principally as sinking particulate nitrogen, PN) is believed…”
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Ecological nitrogen-to-phosphorus stoichiometry at station ALOHA by Karl, David M, Björkman, Karin M, Dore, John E, Fujieki, Lance, Hebel, Dale V, Houlihan, Terrence, Letelier, Ricardo M, Tupas, Luis M

“…The elemental stoichiometry of dissolved and particulate matter in the sea, especially the nitrogen-to-phosphorus ratio, is an important parameter for studies…”
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Diatom fluxes to the deep sea in the oligotrophic North Pacific gyre at Station ALOHA by Scharek, Renate, Tupas, Luis M., Karl, David M.

“…Planktonic diatoms are important agents of vertical transport of photosynthetically fixed organic carbon to the ocean's interior and seafloor. Diatom fluxes to…”
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Freezing as a method of sample preservation for the analysis of dissolved inorganic nutrients in seawater by Dore, John E., Houlihan, Terrence, Hebel, Dale V., Tien, Georgia, Tupas, Luis, Karl, David M.

“…It is often desirable or necessary to store collected seawater samples prior to analysis for dissolved inorganic nutrients. It is therefore important to…”
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Analyses of dissolved organic carbon in seawater: the JGOFS EqPac methods comparison by Sharp, Jonathan H., Benner, Ronald, Bennett, Lenore, Carlson, Craig A., Fitzwater, Steve E., Peltzer, Edward T., Tupas, Luis M.

“…Results of a dissolved organic carbon (DOC) methods comparison are presented here in which five high temperature combustion (HTC) instruments and a wet…”
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Nitrogen metabolism by heterotrophic bacterial assemblages in Antarctic coastal waters by TUPAS, L. M, KOIKE, I, KARL, D. M, HOLM-HANSEN, O

“…Field studies to examine the in situ assimilation and production of ammonium (NH super(+) sub(4)) by bacterial assemblages were conducted in the northern…”
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