Search Results - "AMMERMAN, J. W"

Sargasso Sea phosphorus biogeochemistry: an important role for dissolved organic phosphorus (DOP) by Lomas, M. W., Burke, A. L., Lomas, D. A., Bell, D. W., Shen, C., Dyhrman, S. T., Ammerman, J. W.

“…Inorganic phosphorus (SRP) concentrations in the subtropical North Atlantic are some of the lowest in the global ocean and have been hypothesized to constrain…”
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Role of the phosphatase PhoX in the phosphorus metabolism of the marine bacterium Ruegeria pomeroyi DSS-3 by Sebastian, M., Ammerman, J. W.

“…Summary Marine microbes are adapted to surviving in a variable phosphorus (P) environment. This adaptation frequently involves the presence of periplasmic or…”
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Eutrophication-Induced Phosphorus Limitation in the Mississippi River Plume: Evidence from Fast Repetition Rate Fluorometry by J. B. Sylvan, A. Quigg, S. Tozzi, Ammerman, J. W.

“…We assessed nutrient limitation in the Mississippi River plume and Louisiana continental shelf during the summer of 2002 (04-08 July). We measured nutrient…”
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The Fate of Nitrogen and Phosphorus at the Land-Sea Margin of the North Atlantic Ocean by Nixon, S. W., Ammerman, J. W., Atkinson, L. P., Berounsky, V. M., Billen, G., Boicourt, W. C., Boynton, W. R., Church, T. M., Ditoro, D. M., Elmgren, R., Garber, J. H., Giblin, A. E., Jahnke, R. A., Owens, N. J. P., Pilson, M. E. Q., Seitzinger, S. P.

“…Five large rivers that discharge on the western North Atlantic continental shelf carry about 45% of the nitrogen (N) and 70% of the phosphorus (P) that others…”
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Inputs, Losses and Transformations of Nitrogen and Phosphorus in the Pelagic North Atlantic Ocean by Michaels, A. F., Olson, D., Sarmiento, J. L., Ammerman, J. W., Fanning, K., Jahnke, R., Knap, A. H., Lipschultz, F., Prospero, J. M.

“…The North Atlantic Ocean receives the largest allochthonous supplies of nitrogen of any ocean basin because of the close proximity of industrialized nations…”
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Pyrococcus horikoshii sp. nov., a hyperthermophilic archaeon isolated from a hydrothermal vent at the Okinawa Trough by GONZALEZ, J. M, MASUCHI, Y, ROBB, F. T, AMMERMAN, J. W, MAEDER, D. L, YANAGIBAYASHI, M, TAMAOKA, J, KATO, C

“…A hyperthermophilic, anaerobic archaeon was isolated from hydrothermal fluid samples obtained at the Okinawa Trough vents in the NE Pacific Ocean, at a depth…”
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Nutrient limitation of phytoplankton in Chesapeake Bay by Fisher, Thomas R., Peele, Emily R., Ammerman, James W., Harding, Lawrence W.

“…This paper presents evidence of a seasonal shift from P to N as the nutrient limiting the accumulation of algal biomass in Chesapeake Bay. Following the…”
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Continuous underway measurement of microbial ectoenzyme activities in aquatic ecosystems by Ammerman, James W., Glover, William B.

“…Microbial ectoenzyme activities in aquatic environments are important agents of polymer hydrolysis and indicators of the state of microbial carbon, nitrogen,…”
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Sulfur Cycling in the Terrestrial Subsurface: Commensal Interactions, Spatial Scales, and Microbial Heterogeneity by G. A. Ulrich, D. Martino, K. Burger, J. Routh, E. L. Grossman, Ammerman, J. W., J. M. Suflita

“…Microbiological, geochemical, and isotopic analyses of sediment and water samples from the unconsolidated Yegua formation in east-central Texas were used to…”
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Bacterial 5$^{\prime}$-nucleotidase in Aquatic Ecosystems: A Novel Mechanism of Phosphorus Regeneration by Ammerman, James W., Azam, Farooq

“…Zooplankton excretion and algal alkaline phosphatase are presumed to be responsible for phosphorus recycling in aquatic ecosystems; the role of bacteria has…”
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Bacterial 5'-Nucleotidase Activity in Estuarine and Coastal Marine Waters: Characterization of Enzyme Activity by Ammerman, James W., Azam, Farooq

“…We measured 5'-nucleotidase by following the hydrolysis of ATP and measured alkaline phosphatase by conventional fluorometric techniques. 5'-Nucleotidase (5PN)…”
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Taxonomic Variability of Phosphorus Stress in Sargasso Sea Phytoplankton by Lomas, Michael W., Swain, Ashley, Shelton, Ryan, Ammerman, James W.

“…Low inorganic phosphorus (SRP) concentrations and high inorganic nitrogen to phosphorus ratios suggest that phytoplankton production in the northwestern…”
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Microbial Abundance and Activity in a Low-Conductivity Aquifer System in East-Central Texas by D. P. Martino, E. L. Grossman, G. A. Ulrich, K. C. Burger, J. L. Schlichenmeyer, J. M. Suflita, Ammerman, J. W.

“…The influence of sediment properties and groundwater geochemistry on microbial abundance and activity was examined in a Gulf Coast aquifer system. Three…”
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Bacterioplankton in the coastal euphotic zone: distribution, activity and possible relationships with phytoplankton by Fuhrman, J.A, Ammerman, J.W, Azam, F

“…Bacterioplankton were studied in the euphotic zone of the Southern California Bight, USA, with special attention to biological factors affecting bacterial…”
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Bacterioplankton growth in seawater: I. Growth kinetics and cellular characteristics in seawater cultures by Ammerman, J. W., Fuhrman, J. A., Hagström, Å., Azam, F.

“…The major objective of this study was to examine the ability of marine bacteria to grow in paricle-free unenriched seawater and to characterize this growth. A…”
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Characteristics of Cyclic AMP Transport by Marine Bacteria by AMMERMAN, J. W, FAROOQ AZAM

“…Classifications Services AEM Citing Articles Google Scholar PubMed Related Content Social Bookmarking CiteULike Delicious Digg Facebook Google+ Mendeley Reddit…”
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Dissolved Cyclic Adenosine Monophosphate (cAMP) in the Sea and Uptake of cAMP by Marine Bacteria by Ammerman, J. W., Azam, F.

“…Dissolved cyclic-3′,5′-adenosine monophosphate (cAMP) was measured in coastal seawater. Concentrations of cAMP ranged from 1 to 35 × 10⁻¹² M being greatest in…”
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Bacterioplankton growth in seawater: II. Organic matter utilization during steady-state growth in seawater cultures by Hagström, Å., Ammerman, J. W., Henrichs, S., Azam, F.

“…The objective of this study was to examine the coupling between production of dissolved organic matter in the sea and its utilization by bacteria. We found…”
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Microbes and the Marine Phosphorus Cycle by DYHRMAN, SONYA T., AMMERMAN, JAMES W., VAN MOOY, BENJAMIN A. S.

“…Phosphorus (P) is fundamental to life, and years of study in marine systems have built a broad understanding of the marine P cycle. Various aspects of marine P…”
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Uptake of Cyclic AMP by Natural Populations of Marine Bacteria by Ammerman, J W, Azam, F

“…Classifications Services AEM Citing Articles Google Scholar PubMed Related Content Social Bookmarking CiteULike Delicious Digg Facebook Google+ Mendeley Reddit…”
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