Water Pollution Control Research Series 16010 DSW 05/71: Eutrophication of Surface Waters-Lake Tahoe PDF Download
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Author: United States. Enviornmental Protection Agency
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Category :
Languages : en
Pages : 172
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Author: United States. Enviornmental Protection Agency
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ISBN:
Category :
Languages : en
Pages : 172
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Author: Percy Harold McGauhey
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Category : Eutrophication
Languages : en
Pages : 176
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A survey was made of nutrient and other chemical constituents of surface waters from developed and undeveloped land areas, sewage effluents, seepage from septic tank percolation system and refuse fills, drainage from swamps, precipitation, and Lake Tahoe water. Algal growth stimulating potential of the samples were bioassayed with Selenastrum gracile as a test organism. Algal response to nutrients was measured by maximum growth rate and maximum cell count in a 5-day growth period. Ponds simulating the shallow portions of the lake were used for continuous flow assay of the biomass of indigenous lake organisms produced by sewage effluent. Flask assays and chemical analyses were made over two years on three major creeks. Twenty-eight other creeks and precipitations were monitored by chemical analysis. Evaluating the eutrophication potential, Lake Tahoe is nitrogen sensitive and responds to it in proportion to its concentration.
Author: United States. Enviornmental Protection Agency
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Category :
Languages : en
Pages : 132
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Category : Government publications
Languages : en
Pages : 978
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Category : Technology
Languages : en
Pages : 1290
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Author: United States. Environmental Protection Agency
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Category : Environmental protection
Languages : en
Pages : 1544
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Vols. for 1970/76- include reports bibliography, and separate title, subject, corporate author, personal author, contract number, and accession/report number indexes.
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Category : Science
Languages : en
Pages : 248
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Author: U.S. Geological Survey Library
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Category : Geology
Languages : en
Pages : 774
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Author: United States. Environmental Protection Agency. Library Systems Branch
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Category : Environmental engineering
Languages : en
Pages : 1536
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Author: Mona Smith
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Category : Sanitary landfills
Languages : en
Pages : 270
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