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Science 29 March 1968:
Vol. 159. no. 3822, pp. 1463 - 1464
DOI: 10.1126/science.159.3822.1463
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Articles

Amino Acid Flux in an Estuary

John E. Hobbie 1, Claude C. Crawford 1, and Kenneth L. Webb 2

1 Department of Zoology, North Carolina State University, Raleigh
2 Virginia Institute of Marine Science, Gloucester Point

Dissolved organic matter in York River estuary included 38 micrograms of free amino acids per liter. The highest concentrations were of glycine, serine, and ornithine. Of the 14 amino acids studied for uptake by planktonic bacteria, glycine, methionine, and serine had the greatest flux rates. The total amino acid flux represented from 1 to 10 percent of the daily photosynthetic carbon fixation.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)