OCCURRENCE AND METABOLIC-ACTIVITY OF ORGANISMS UNDER THE ROSS ICE SHELF, ANTARCTICA, AT STATION J9

被引：56

作者：

AZAM, F ^{[1
]}

BEERS, JR ^{[1
]}

CAMPBELL, L ^{[1
]}

CARLUCCI, AF ^{[1
]}

HOLMHANSEN, O ^{[1
]}

REID, FMH ^{[1
]}

KARL, DM ^{[1
]}

机构：

[1] UNIV HAWAII,DEPT OCEANOG,HONOLULU,HI 96822

来源：

SCIENCE | 1979年 / 203卷 / 4379期

关键词：

D O I：

10.1126/science.203.4379.451

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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 × 10 6 to 1.2 × 107 per liter), microplankters (10 2 to 103 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 107 to 108 bacteria per gram (dry weight), which were metabolically active as shown by respiration of uniformly labeled D-[14C]glucose. From this study it cannot be determined whether these organisms in the water column and sediments constitute a functioning food web. Copyright © 1979 AAAS.

引用

页码：451 / 453

页数：3

共 17 条

[1] BOTTOM LIFE UNDER ANTARCTIC ICE SHELVES [J].