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- Final Report | In Situ Assessment of the Transport and Microbial Consumption of Oxygen in Groundwater
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- Third, two different types of laboratory incubations using aquifer core material, potential electron transport system (ETS) activity ... It also was characterized by both vertical and horizontal gradients of dissolved oxygen, providing a range of ...
- Page Title | About the Gulf Ecology Division | US EPA11-23-2009
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- In vertically sectioned microcosms, average taxa richness in sand treatments was significantly ... parametric multivariate analysis (Primer) revealed that community structure in the vertically sectioned microcosms differed significantly between sand and one of the ...
- 2002 Annual Report | Microbiological and Physicochemical Aspects of Mercury Cycling in the Coastal/Estuarine Waters of Long Island Sound and Its River-Seawater Mixing Zones05-13-2003
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- ... findings support the hypothesis that reactant Hg is supplied by vertical mixing of bottom waters, although factors such as dissolved organic ...
- EPA Exposure Research - Ecosystems Research Division Publications: 200003-04-2009
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- Additional evidence is supplied by models of vertical flow that confirm the magnitude of vertical displacements caused by infiltrating water ...
- Page Title | About the Gulf Ecology Division | US EPA11-23-2009
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- ... oil (30 g) ranged from 6.8-17.3% in biologically active incubations compared with only 0.9-1.1% in sterile and nutrient-limited ...
- EPA Ground Water & Drinking Water02-17-2009
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- An open vertical drop, or vertical empty space, that separates a drinking (potable) water supply to ... The vertical distance from the sand surface to the underside of a ...
- EPA Ground Water & Drinking Water02-17-2009
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- An open vertical drop, or vertical empty space, that separates a drinking (potable) water supply to ... The vertical distance from the sand surface to the underside of a ...
- Volunteer Stream Monitoring: A Methods Manual 5.2 Dissolved Oxygen and Biochemical Oxygen Demand11-30-2006
- "Information on oxygen in a stream system."
- EPA11-30-2006
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- ... to lakes, where DO levels are most likely to vary vertically in the water column, the DO in rivers and streams ...
- Final Report | ECOHAB - Hydrography and Biology to Provide Information for the Construction of a Model to Predict the Initiation, Maintanence and Dispersal of Red Tide on the West Coast of Florida02-05-2007
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- Using populations incubated on deck at 150 and 300 μmol photons m ... Specially designed laboratory incubation systems were developed to better characterize the migration ability of ...