Search Results - "Hewes, C. D."

Eddies enhance biological production in the Weddell-Scotia Confluence of the Southern Ocean by Kahru, M., Mitchell, B. G., Gille, S. T., Hewes, C. D., Holm,-Hansen, O.

“…Satellite data show that oceanic eddies generated in the Southern Antarctic Circumpolar Current Front (SACCF) are associated with increased phytoplankton…”
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Natural iron enrichment around the Antarctic Peninsula in the Southern Ocean by Ardelan, M. V., Holm-Hansen, O., Hewes, C. D., Reiss, C. S., Silva, N. S., Dulaiova, H., Steinnes, E., Sakshaug, E.

“…As part of the US-AMLR program in January-February of 2006, 99 stations in the South Shetland Islands-Antarctic Peninsula region were sampled to understand the…”
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A quantitative analysis of sources for summertime phytoplankton variability over 18 years in the South Shetland Islands (Antarctica) region by Hewes, C.D., Reiss, C.S., Holm-Hansen, O.

“…Eighteen years of summertime hydrographic and chlorophyll- a (Chl- a) data (∼2700 stations) from the South Shetland Islands (Antarctica) region show that a…”
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Deep chlorophyll a maxima (DCMs) in pelagic antarctic waters. II. Relation to bathymetric features and dissolved iron concentrations by HOLM-HANSEN, O, KAHRU, M, HEWES, C. D

“…A deep chlorophyll a maximum (DCM) at depths between 60 and 90 m in waters south of the Antarctic Polar Front (APF) occurs only in pelagic waters where the…”
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Control of phytoplankton biomass by dilution and mixed layer depth in the western Weddell-Scotia Confluence by Hewes, C. D., Reiss, C. S., Kahru, M., Mitchell, B. G., Holm-Hansen, O.

“…Hydrographic, nutrient and trace metal (iron, manganese, and aluminum) concentration data, collected as part of a 2-ship survey during austral summer 2004,…”
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Temporal and spatial distribution of chlorophyll- a in surface waters of the Scotia Sea as determined by both shipboard measurements and satellite data by Holm-Hansen, O., Kahru, M., Hewes, C.D., Kawaguchi, S., Kameda, T., Sushin, V.A., Krasovski, I., Priddle, J., Korb, R., Hewitt, R.P., Mitchell, B.G.

“…Chlorophyll- a (Chl- a) concentrations in surface waters were measured at 137 hydrographic stations occupied by four research vessels participating in the…”
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Factors influencing the distribution, biomass, and productivity of phytoplankton in the Scotia Sea and adjoining waters by Holm-Hansen, O., Naganobu, M., Kawaguchi, S., Kameda, T., Krasovski, I., Tchernyshkov, P., Priddle, J., Korb, R., Brandon, M., Demer, D., Hewitt, R.P., Kahru, M., Hewes, C.D.

“…During January and February 2000 four research vessels, from Russia, the UK, Japan, and the United States, conducted an oceanographic survey with 137…”
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Reliability of estimating chlorophyll a concentrations in Antarctic waters by measurement of in situ chlorophyll a fluorescence by Holm-Hansen, O., Amos, A. F., Hewes, C. D.

“…Using an extensive data set acquired in Antarctic waters in February-March of 1998, algorithms have been formulated which permit reliable estimation of…”
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Distribution of phytoplankton and nutrients in relation to different water masses in the area around Elephant Island, Antarctica by HOLM-HANSEN, O, HEWES, C. D, VILLAFANE, V. E, HELBLING, E. W, SILVA, N, AMOS, T

“…During January March 1996 the U.S. Antarctic Marine Living Resources program carried out an extensive multidisciplinary study in a 40,000 km^sup 2^ sampling…”
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Phytoplankton blooms in the vicinity of Palmer Station, Antarctica by HOLM-HANSEN, O, MITCHELL, B. G, HEWES, C. D, KARL, D. M

“…Fifteen oceanographic stations were occupied in the vicinity of Anvers Island, Antarctica, in January of 1985 and 1987. All stations showed high phytoplankton…”
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Effects of Dissolved and Complexed Copper on Heterotrophic Bacterial Production in San Diego Bay by Boyd, Thomas J., Wolgast, David M., Rivera-Duarte, Ignacio, Holm-Hansen, Osmund, Hewes, Christopher D., Zirino, Alberto, Chadwick, D. Bart

“…Bacterial abundance and production, free (uncomplexed) copper ion concentration, total dissolved copper concentration, dissolved organic carbon (DOC), total…”
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Microbial autotrophic and heterotrophic eucaryotes in Antarctic waters: relationships between biomass and chlorophyll, adenosine triphosphate and particulate organic carbon by Hewes, Christopher D., Sakshaug, Egil, Reid, Freda M. H., Holm-Hansen, Osmund

“…Microscopical examination of near-surface eucaryotic microbial populations in circumcontinental waters of Antarctica indicated that nanoplankton (<20 μm…”
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THE PHYCOBILIN SIGNATURES OF CHLOROPLASTS FROM THREE DINOFLAGELLATE SPECIES: A MICROANALYTICAL STUDY OF DINOPHYSIS CAUDATA, D. FORTII, AND D. ACUMINATA (DINOPHYSIALES, DINOPHYCEAE) by Hewes, Christopher D., Mitchell, B. Greg, Moisan, Tiffany A., Vernet, Maria, Reid, Freda M. H.

“…The absorbance and fluorescence emission spectra for three species of Dinophysis, D. caudata Saville‐Kent, D. fortii Pavillard, and D. acuminata Claparède et…”
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A method for recovering nanoplankton from filters for identification with the microscope: the filter-transfer-freeze (FTF) technique by Hewes, C.D, Holm-Hansen, O

“…A method has been developed to concentrate nanoplankton in natural water samples for transfer to solid surfaces for light microscopy. Marine phytoplankton are…”
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Deep chlorophyllamaxima (DCMs) in pelagic Antarctic waters: II. Relation to bathymetric features and dissolved iron concentrations by Holm-Hansen, O., Kahru, M., Hewes, C. D.

“…A deep chlorophyllamaximum (DCM) at depths between 60 and 90 m in waters south of the Antarctic Polar Front (APF) occurs only in pelagic waters where the…”
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Deep chlorophyll-a maxima (DCMs) in Antarctic waters. I: Relationships between DCMs and the physical, chemical, and optical conditions in the upper water column by HOLM-HANSEN, Osmund, HEWES, Christopher D

“…The US Antarctic Marine Living Resources (AMLR) program has, since 1990, conducted annual surveys from early January through mid-March in a large sampling grid…”
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Influence of atmospheric teleconnections and Upper Circumpolar Deep Water on phytoplankton biomass around Elephant Island, Antarctica by Reiss, Christian S., Hewes, Christopher D., Holm-Hansen, Osmund

“…Using 18 years of hydrographic data collected during austral summer from 1990 to 2007, we examined the association between atmospheric teleconnections,…”
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Temporal and spatial distribution of chlorophyll-a in surface waters of the Scotia Sea as determined by both shipboard measurements and satellite data: The CCAMLR 2000 Survey: a multinational, multi-ship biological oceanography survey of the Atlantic sector of the Southern Ocean by HOLM-HANSEN, O, KAHRU, M, MITCHELL, B. G, HEWES, C. D, KAWAGUCHI, S, KAMEDA, T, SUSHIN, V. A, KRASOVSKI, I, PRIDDLE, J, KORB, R, HEWITT, R. P

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Factors influencing the distribution, biomass, and productivity of phytoplankton in the Scotia Sea and adjoining waters: The CCAMLR 2000 Survey: a multinational, multi-ship biological oceanography survey of the Atlantic sector of the Southern Ocean by HOLM-HANSEN, O, NAGANOBU, M, HEWITT, R. P, KAHRU, M, HEWES, C. D, KAWAGUCHI, S, KAMEDA, T, KRASOVSKI, I, TCHERNYSHKOV, P, PRIDDLE, J, KORB, R, BRANDON, M, DEMER, D

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