Fate of Fresh Water Bacteria in the Sea

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Abstract
Fresh-water bacteria survive in sea water nearly as long as in tap water. They survive longer at 20[degree]-22[degree] than at 7[degree]-12[degree] C. Some survive longer in sea water at 20[degree]-22[degree], than in tap water at 7[degree]-12[degree]. They probably survive longer in presence of organic matter. Some fresh-water bacteria survive for a considerable time in broth containing salt in concentration 2-4 times that in the sea. Many fresh-water bacteria can develop increased tolerance for salt twice that shown originally, and grow in concentration in excess of that in the sea. Salts in the sea other than NaCl do not reduce viability of fresh-water bacteria. Cells of young cultures are more susceptible to salt than cells of older cultures. The greatest resistance is reached in 24-48 hr. cultures. Fresh-water bacteria can decompose organic matter in the sea.