A DIEL STUDY OF THE NEUSTON AND PLANKTON BACTERIA IN AN ANTARCTIC POND

被引：9
作者：
MAKI, JS
HERWIG, RP
机构：
[1] Laboratory of Microbial Ecology, Division of Applied Sciences, Harvard University, Cambridge, Massachusetts
[2] Department of Microbiology, SC-42, University of Washington, Seattle, Washington
来源：
ANTARCTIC SCIENCE | 1991年 / 3卷 / 01期
关键词：
ANTARCTICA; DIEL STUDY; FRESH-WATER; NEUSTON;
D O I：
10.1017/S0954102091000081
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A small freshwater pond near Palmer Station, Anvers Island, (64-degrees 45'S, 64-degrees 05'W) was sampled every 6 h over a 24 h period during the late austral summer to examine changes in both neuston and plankton population levels and activity. Total bacteria using acridine orange and epifluorescence microscopy, counts of viable colony-forming units, and chlorophyll a were determined. Activity was estimated by measuring the rate of H-3-thymidine incorporation. The data indicate that over this time period the bacterioneuston populations went through a diel fluctuation and temperature may be an important factor in this cycle. Although the bacterioneuston populations were often more numerous than corresponding plankton populations, subsurface bacteria appeared to be metabolically more active.
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页码：47 / 51
页数：5
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