Search Results - "Souza, Afonso C."

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    Rates of nitrification and ammonium dynamics in northeastern Chukchi Sea shelf waters by Souza, Afonso C., Gardner, Wayne S., Dunton, Kenneth H.

    “…Nutrient concentrations are often depleted in surface waters during the late summer open-water period in the northern Chukchi Sea. Yet the rate of re-supply of…”
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    Journal Article
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    Method for enumeration of 5-cyano-2,3-ditoyl tetrazolium chloride (CTC)-active cells and cell-specific CTC activity of benthic bacteria in riverine, estuarine and coastal sediments by Proctor, Lita M, Souza, Afonso C

    “…Bacteria are the most abundant and active organisms in marine sediments and are critical for nutrient cycling and as a food source to many benthic and pelagic…”
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  3. 3

    Vertical Profiles of Major Organic Geochemical Constituents and Extracellular Enzymatic Activities in Sandy Sediments of Aransas and Copano Bays, TX by Souza, Afonso C., Pease, Tamara K., Gardner, Wayne S.

    Published in Estuaries and coasts (01-01-2012)
    “…Vertical distribution patterns of organic geochemical constituents and the enzymes aminopeptidase and β-glucosidase provide insights about the nature and…”
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    Dinitrogen, oxygen, and nutrient fluxes at the sediment–water interface and bottom water physical mixing on the eastern Chukchi Sea shelf by Souza, Afonso C., Kim, Il-Nam, Gardner, Wayne S., Dunton, Kenneth H.

    “…We measured fluxes of net dissolved N2 and O2, NO3−, and PO4−3 at the sediment–water interface in whole cores in relation to bottom water temperature and…”
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    Collection of intact sediment cores with overlying water to study nitrogen- and oxygen-dynamics in regions with seasonal hypoxia by Gardner, Wayne S., McCarthy, Mark J., Carini, Stephen A., Souza, Afonso C., Lijun, Hou, McNeal, Karen S., Puckett, Mary Keith, Pennington, Jack

    Published in Continental shelf research (15-10-2009)
    “…Settled particles of fresh, labile organic matter may be a significant source of oxygen demand and nutrient regeneration in seasonally-hypoxic regions caused…”
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