Index Catalog // ScholarsArchive@OSU

Creator:: Zaneveld, J. Ronald
Abstract:: An expression is derived for the rate at which the diffuse attenuation coefficient for vector irradiance approaches its asymptotic value in a homogeneous medium. The asymptotic approach rate is shown to be a function of boundary conditions at the surface and the asymptotic diffuse attenuation coefficient which is an inherent...
Resource Type:: Article
Full Text:: ), 1989, 1442-1452 Q 1989, by the American Society of Limnology and Oceanography, Inc. An asymptotic

Creator:: McManus, James, Collier, Robert W., Chen, Chen-Tung A., and Dymond, Jack
Abstract:: Active inputs of thermally and chemically enriched fluids at the bottom of Crater Lake create small vertical and horizontal heterogeneities in the deep-lake temperature and salt distribution. Using an internally recording CTD and a precise definition for salinity as a function of in situ conductivity and temperature, we assess the...
Resource Type:: Article
Full Text:: Society of Limnology and Oceanography, Inc. Physical properties of Crater Lake, Oregon: A method for the

Creator:: Kirchman, David L., Keil, Richard G., and Wheeler, Patricia A.
Abstract:: The purpose of this study was to test the hypothesis that NH4+ uptake by heterotrophic bacteria in the subarctic Pacific is C limited. Addition of glucose (0.5–1.0 μM) stimulated NH4+ uptake in unfractionated water but had no effect on bacterial abundance. Glucose stimulation of NH4+ uptake was even greater in...
Resource Type:: Article
Full Text:: . Oceanogr.. 35(6), 1990, 1258-1266 0 1990, by the American Society of Limnology and Oceanography, Inc

Creator:: Wheeler, Patricia A. and Kokkinakis, Steven A.
Abstract:: Seasonal and diel changes in nutrient concentrations and nitrogen assimilation rates were used to assess the effects of NH4+ on NO3- assimilation. Surface-water NO3- concentrations ranged from 6 to 17 μM while NH4+ concentrations ranged from 0 to 0.4 μM. Total N assimilation ranged from 84 to 732 nM d–1...
Resource Type:: Article
Full Text:: , by the American Society of Limnology and Oceanography, Inc. Ammonium recycling limits nitrate use

Creator:: Wheeler, Patricia A., Kirchman, David L., Landry, Michael R., and Kokkinakis, Steven A.
Abstract:: Diel periodicity in NH4+ uptake and regeneration in the nutrient-rich environment of the oceanic subarctic Pacific was examined. Surface water was incubated in large shipboard microcosms that allowed repeated sampling of the planktonic community for NH4+ cycling rates, bacterial production rates, and population densities of the dominant autotrophs and heterotrophs....
Resource Type:: Article
Full Text:: Q 1989, by the American Society of Limnology and Oceanography, Inc. Diel periodicity in ammonium

Creator:: Kokkinakis, Steven A. and Wheeler, Patricia A.
Abstract:: Uptake of nitrogenous nutrients by microplankton off the Washington and Oregon coasts was measured during the 1985 upwelling period. Nitrogen uptake rates in low-NO3- waters (<5 μM) were 0.020–0.258 μmol N liter-1 h-1 and were primarily supported by regenerated nitrogen (71% of total uptake). Nitrogen uptake rates in high-NO3- waters...
Resource Type:: Article
Full Text:: 0 1987, by the American Society of Limnology and Oceanography, Inc. Nitrogen uptake and

Creator:: Miller, Charles B., Frost, Bruce W., Wheeler, Patricia A., Landry, Michael R., Welschmeyer, Nicholas, and Powell, Thomas M.
Abstract:: It has been suggested that production in offshore waters of the subarctic Pacific is limited by availability of dissolved Fe. Although that is not yet adequately established, the functional consequences of the limitation (if it exists) can be characterized from the results of the Subarctic Pacific Ecosystem Research (SUPER) program....
Resource Type:: Article
Full Text:: -1615 Q 199 1, by the American Society of Limnology and Oceanography, Inc. Ecological dynamics in the

Creator:: Miller, Charles B., Huntley, Mark E., and Brooks, Elaine R.
Abstract:: Rates of molting of a specific copepodite stage can be determined by sorting the stage from a new collection, waiting, then counting the number that have molted to the next stage in the interval. In principle, stage duration can be determined as the inverse of the measured rate, and molting...
Resource Type:: Article
Full Text:: . Oceanogr., 29(6), 1984, 1274-1289 0 1984, by the American Society of Limnology and Oceanography, Inc

Creator:: Suzuki, Marcelino T., Sherr, Evelyn, and Sherr, Barry F.
Abstract:: We compared estimates of bacterial abundance and of average bacterial cell size based on direct counts of bacterioplankton cells stained with acridine orange (AO) or 4’-6-diamidino-2-phenylidole (DAPI). Estimates of numbers mll–1 of bacteria stained with DAPI were on average 70% (range 57–82%) of bacterial counts made with AO as the...
Resource Type:: Article
Full Text:: 1566 Notes hmnol. Oceanogr., 38(7), 1993, 1566-1570 0 1993, by the American Society of Limnology and

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