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Effects of 1985-86 levels of dissolved gas on salmonids in the Columbia River
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1986
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Description:Gas bubble disease (GBD) in freshwater fishes, resulting from supersaturation of dissolved atmospheric gases in water, has been studied by investigators since the early 1900s (Marsh and Gorham 1905; Rucker and Tuttle 1948; Harvey and Cooper 1962; Shirahata 1966). In the Columbia and Snake Rivers, GBD became evident in the 1960s and was attributed to supersaturation of dissolved gases caused by high volumes of water flowing over spillways at dams (Ebel 1969; Beiningen and Ebel 1970; Ebel 1971; Meekin and Allen 1974). Gas levels over 140% of saturation were not uncommon; from literature it was apparent that 110% was potentially lethal to fish. The problem was intensified for salmonids by an increased migration time, resulting from impoundments created by several new dams on the river
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Rights Information:CC0 Public Domain
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Compliance:Library
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