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Azam F, Beers JR, Campbell L, et al. Occurrence and metabolic activity of organisms under the ross ice shelf, antarctica, at station j9. Science. 1979;203(4379):451-3doi: 10.1126/science.203.4379.451.
Azam, F., Beers, J. R., Campbell, L., Carlucci, A. F., Holm-Hansen, O., Reid, F. M., & Karl, D. M. (1979). Occurrence and metabolic activity of organisms under the ross ice shelf, antarctica, at station j9. Science (New York, N.Y.), 203(4379), 451-3. https://doi.org/10.1126/science.203.4379.451
Azam, F, et al. "Occurrence and metabolic activity of organisms under the ross ice shelf, antarctica, at station j9." Science (New York, N.Y.) vol. 203,4379 (1979): 451-3. doi: https://doi.org/10.1126/science.203.4379.451
Azam F, Beers JR, Campbell L, Carlucci AF, Holm-Hansen O, Reid FM, Karl DM. Occurrence and metabolic activity of organisms under the ross ice shelf, antarctica, at station j9. Science. 1979 Feb 02;203(4379):451-3. doi: 10.1126/science.203.4379.451. PMID: 17734142.
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Science. 1979 Feb 02;203(4379):451-3. doi: 10.1126/science.203.4379.451.

Occurrence and metabolic activity of organisms under the ross ice shelf, antarctica, at station j9.

Science (New York, N.Y.)

F Azam, J R Beers, L Campbell, A F Carlucci, O Holm-Hansen, F M Reid, D M Karl

PMID: 17734142 DOI: 10.1126/science.203.4379.451

Abstract

Seawater samples below the Ross Ice Shelf were collected through an access hole at J9, approximately 400 kilometers from the Ross Sea, Antarctica. The 237-meter water column had sparse populations of bacteria (8.7 x 10(6) to 1.2 x 10(7) per liter), microplankters (10(2) to 10(3) per cubic meter), and zooplankters (10 to 20 per cubic meter) at the depths studied. Microbial biomass estimates from cellular adenosine 5'-triphosphate measurements were very low (10 to 150 nanograms of carbon per liter), comparable with values for the abyssal ocean. Microbial populations assimilated tritiated D-glucose, thymidine, uridine, and adenosine triphosphate at extremely low rates, comparable with deep-sea heterotrophic populations. Sediment samples had 10(7) to 10(8) bacteria per gram (dry weight), which were metabolically active as shown by respiration of uniformly labeled D-[(14)C]glucose. From this study it cannot be determined whether these organisms in the water column and sediments constitute a functioning food web.

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