Index Catalog // ScholarsArchive@OSU

Riverine input of macronutrients, iron, and organic matter to the coastal ocean off Oregon, U.S.A., during the winter

Creator:: Wetz, Michael S., Hales, Burke, Chase, Zanna, Wheeler, Patricia A., and Whitney, Michael M.
Abstract:: Three cross‐shelf transects were conducted off northern Oregon in February, 2003, coincident with flooding of Coast Range rivers, to assess the riverine impact on coastal ocean biogeochemistry. During downwelling conditions, low salinity river‐influenced water was located in a narrow band near the coast and contained elevated macronutrient, iron, and organic...
Resource Type:: Article
Full Text:: Society of Limnology and Oceanography, Inc. 2221 source for zooplankton emerging from diapause

Release of dissolved organic matter by coastal diatoms

Creator:: Wetz, Michael S. and Wheeler, Patricia A.
Abstract:: Dissolved organic matter (DOM) production was examined in axenic batch cultures of five coastal diatom species. For Chaetoceros decipiens, dissolved organic carbon (DOC) accumulated beginning in late exponential growth as a result of increased cell density. For Cylindrotheca closterium, DOC actually decreased in late exponential growth and reached zero by...
Resource Type:: Article
Full Text:: 0434810 to P.A.W. Limnol. Oceanogr., 52(2), 2007, 798–807 E 2007, by the American Society of Limnology

Staging egg development of marine copepods with DAPI and PicoGreen®

Creator:: Zirbel, Marnie Jo, Miller, Charles B., and Batchelder, Harold P.
Abstract:: Calanoid copepod eggs have a robust, chitinous outer chorion, which makes field‐collected, formaldehydefixed eggs difficult to penetrate with stains or molecular probes. Egg development studies in copepods have involved physical, chemical, and enzymatic treatments to remove the chorion. We present an efficient, one‐step method for staining copepod eggs with the...
Resource Type:: Article
Full Text:: translations from German. Limnol. Oceanogr.: Methods 5, 2007, 106-110 © 2007, by the American Society of

Rocky intertidal oceanography: an association between community structure and nearshore phytoplankton concentration

Creator:: Menge, Bruce A., Daley, Bryon A., Wheeler, Patricia A., and Strub, P. Ted
Abstract:: On Oregon coastal rocky shores, filter‐feeders were relatively abundant and macrophytes were relatively scarce at Strawberry Hill, whereas opposite abundance patterns occurred at Boiler Bay. To determine whether nearshore oceanographic differences were associated with these patterns, we made shore‐based measurements of nutrient and Chl a concentrations. We used a three‐level...
Resource Type:: Article
Full Text:: phytoplankton concentration. 1hl1110/. Ocrmlogr.. 42( I ), 1997, 57-M-i 0 1997, by the American Society of

High-frequency measurement of partial pressure and total concentration of carbon dioxide in seawater using microporous hydrophobic membrane contractors

Creator:: Hales, Burke, Chipman, David, and Takahashi, Taro
Abstract:: To investigate CO₂ chemistry in ocean water with greater time-space resolutions, we systems, which have state-of-the-art precision but an order of magnitude or better analysis, for carbon dioxide partial pressures (Pco₂) and total carbon dioxide Pco₂ system was based on equilibration of a CO₂-free carrier gas stream with seawater sample...
Resource Type:: Article
Full Text:: , 2004, 356-364 © 2004, by the American Society of Limnology and Oceanography, Inc. LIMNOLOGY and

High-frequency measurement of seawater chemistry: Flow-injection analysis of macronutrients

Creator:: Hales, Burke, van Geen, Alexander, and Takahashi, Taro
Abstract:: We adapted a commercially available flow‐injection autoanalyzer (Lachat Quik‐Chem 8000) to measure seawater nitrate concentrations at a rate of nearly 0.1 Hz and phosphate and silicate concentrations at a rate half that. Several minor improvements, including reduced sample‐loop size, high sample flushing rate, modified carrier chemistry, and use of peak...
Resource Type:: Article
Full Text:: –101 © 2004, by the American Society of Limnology and Oceanography, Inc. LIMNOLOGY and OCEANOGRAPHY

The role of dissolved organic matter release in the productivity of the oligotrophic North Pacific Ocean

Creator:: Karl, David M., Hebel, Dale V., Björkman, K., and Letelier, Ricardo M.
Abstract:: Based on a long-term set of observations and measurements at a station in the subtropical North Pacific Ocean, it now appears that contemporaneous rates of primary production in low-nutrient open ocean regions and perhaps in the ocean as a whole may be greater than had been considered in field studies...
Resource Type:: Article
Full Text:: . The role of dissolved organic matter release in the productivity of the oligotrophic North Pacific

Parameterizing the natural fluorescence kinetics of Thalassiosira weissflogii

Creator:: Laney, Samuel R., Letelier, Ricardo M., and Abbott, Mark R.
Abstract:: We examined variability in the natural fluorescence yield of a neritic diatom, Thalassiosira weissflogii, in continuous cultures. In this species, kinetics in natural fluorescence yield over time scales less than a photoperiod were characterized by sharp decreases, occurring at irradiance intensities that presumably coincide with the onset of nonphotochemical fluorescence...
Resource Type:: Article
Full Text:: –1510 1499 Limnol. Oceanogr., 50(5), 2005, 1499–1510 q 2005, by the American Society of Limnology and

Spatial and temporal distribution of dissolved oxygen in Crater Lake, Oregon

Creator:: McManus, James, Collier, Robert W., Dymond, Jack, Wheat, C. Geoffrey, and Larson, Gary L.
Abstract:: Small temporal and spatial variations in the distribution of dissolved oxygen in Crater Lake, Oregon, are used to estimate the mean age of the lake’s deep water, the flux of labile organic carbon to the deep lake, and the influence of hydrothermal activity on the concentration of dissolved oxygen within...
Resource Type:: Article
Full Text:: Limnol. Oceanogr., 41(4), 1996, 722-73 1 0 1996, by the American Society of Limnology and Oceanography

Methods for measuring benthic nutrient flux on the California Margin: Comparing shipboard core incubations to in situ lander results

Creator:: Hammond, Douglas E., Cummins, Kathleen M., McManus, James, Berelson, William M., Smith, Gerry, and Spagnoli, Federico
Abstract:: The objective of this study was to compare two techniques for estimating benthic fluxes of nutrients (nitrate, phosphate, and silicic acid) and Ge/Si flux ratios. In situ flux chambers were deployed, and cores were collected and incubated at 9 sites along the California margin in July 2001. Both techniques were...
Resource Type:: Article

ScholarsArchive@OSU

Riverine input of macronutrients, iron, and organic matter to the coastal ocean off Oregon, U.S.A., during the winter

Release of dissolved organic matter by coastal diatoms

Staging egg development of marine copepods with DAPI and PicoGreen®

Rocky intertidal oceanography: an association between community structure and nearshore phytoplankton concentration

High-frequency measurement of partial pressure and total concentration of carbon dioxide in seawater using microporous hydrophobic membrane contractors

High-frequency measurement of seawater chemistry: Flow-injection analysis of macronutrients

The role of dissolved organic matter release in the productivity of the oligotrophic North Pacific Ocean

Parameterizing the natural fluorescence kinetics of Thalassiosira weissflogii

Spatial and temporal distribution of dissolved oxygen in Crater Lake, Oregon

Methods for measuring benthic nutrient flux on the California Margin: Comparing shipboard core incubations to in situ lander results

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