Survival ofEscherichia coli in great salt lake water

<p>The Great Salt Lake (GSL) in northern Utah is a key natural resource for migratory waterfowl and the local economy. The quality and quantity of water reaching the Great Salt Lake are of concern, particularly as competing interests along source rivers, such as the Bear River, seek to divert and capture more water to meet their needs. This project presents preliminary field study and aims to improve the scientific understanding of the chemical mixing taking place where freshwater rivers discharge into the Great Salt Lake. Water samples were collected in 16 locations in mixing zones between the Bear River Bay, marshes of the mouth of the Ogden River, and shallow water zones in the Great Salt Lake. Water samples were acidified with nitric acid and filtered through 0.2 micrometer filter. Field in-situ parameters: temperature, pH, ORP, dissolved oxygen, and electric conductance were measured using Troll 9500 probe and concentrations of forty elements were analyzed in ICP-MS and ICP-OES. Field in-situ measurements indicated that pH is weekly alkaline with saline waters typically being more alkaline than fresh water. Saline waters are more reducing than fresh waters. Fresh water flows were extensive in very shallow environments. Extremely shallow environments were more affected by high salinity mud deposits. The results indicate higher concentrations of heavy metals transported from the Bear River Bay to the Great Salt Lake than from the Ogden River. The pattern of elemental concentrations is complex. Fresh water fluxes penetrate shallow saline waters over relatively long distances (hundreds of meters). The depth of lake waters was predominantly less than 0.5 meter. ICP-OES measurements showed that overall Bear River samples had somewhat higher concentrations of major ions than in in the Ogden River. ICP-MS measurements indicated similar patterns between trace elements in the Bear River and in the Ogden River. Both areas have relatively higher concentrations of Al, Fe, and Mn. Concentrations of Pb, As, Se, and Hg are also relatively high. Correlation between in-situ parameters indicates complex relationship between different elements. For example more acidic conditions do not necessarily result in higher concentration of metals. Higher concentrations of metals correlate better with more reducing conditions. Concentrations of metals did increase significantly at more acidic conditions, but they typically characterized less saline waters. We will attempt hydrochemical modeling in the next phase of this research which will be verified by laboratory experiments of mixing of waters in question. This will allow controlling the parameters since natural dynamic flow systems driven by wind in a very shallow water and freshwater fluxes flowing far into saline water bodies might compromise accuracy of thermodynamic modeling.</p>

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The Bacteriostatic and Bactericidal Action of Great Salt Lake Water

Journal of Bacteriology ◽

10.1128/jb.33.3.253-262.1937 ◽

1937 ◽

Vol 33 (3) ◽

pp. 253-262 ◽

Cited By ~ 30

Author(s):

Claude E. Zobell ◽

D. Quentin Anderson ◽

W. Whitney Smith

Keyword(s):

Lake Water ◽

Salt Lake ◽

Great Salt Lake ◽

Bactericidal Action

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Autorun Persistence of the Great Salt Lake Water Level Fluctuations

Critical Transitions in Water and Environmental Resources Management ◽

10.1061/40737(2004)12 ◽

2004 ◽

Author(s):

Abdüsselam Altunkaynak ◽

Mehmet Özger

Keyword(s):

Water Level ◽

Lake Water ◽

Salt Lake ◽

Great Salt Lake ◽

Water Level Fluctuations ◽

Lake Water Level

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Contrasting the Impact of the Natural Hydrologic Cycles and Legacy Highway Construction on Farmington Bay Wetlands of the Great Salt Lake.

Critical Transitions in Water and Environmental Resources Management ◽

10.1061/40737(2004)13 ◽

2004 ◽

Author(s):

Robb Edgar

Keyword(s):

Salt Lake ◽

Great Salt Lake ◽

Highway Construction ◽

The Impact

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Bibliographic notes on H. Stansbury's Exploration and survey of …/ Expedition to the valley of the Great Salt Lake

Archives of Natural History ◽

10.3366/anh.2003.30.2.317 ◽

2003 ◽

Vol 30 (2) ◽

pp. 317-330 ◽

Cited By ~ 1

Author(s):

L. J. Dorr ◽

D. H. Nicolson ◽

L. K. Overstreet

Keyword(s):

Salt Lake ◽

Great Salt Lake ◽

Title Page ◽

Classic Work ◽

Us Government ◽

Multiple Issues ◽

Title Pages

Howard Stansbury's classic work is bibliographically complex, with two true editions as well as multiple issues of the first edition. The first edition was printed in Philadelphia; its 487 stereotyped pages were issued in 1852 under two different titles with three variant title-pages (an official US government issue and two trade issues). A second edition was printed in Washington in 1853 and had 495 typeset pages (with corrections and additions in the appendices). The issue of 1855 is identical to the 1852 trade issue, except for the change of the date on the title-page. Each issue and edition, with its bindings and plates, is described.

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