thumbnail

Effect of organic contamination upon microbial distributions and heterotrophic uptake in a cape cod, mass., aquifer

Applied and Environmental Microbiology
By: , and 

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time
  • Download citation as: RIS | Dublin Core

Abstract

Bacterial abundance, distribution, and heterotrophic uptake in a freshwater aquifer contaminated by treated sewage were determined from analyses of groundwater and sediment-core samples. The number of free-living (unattached) bacteria in contaminated groundwater declined steadily with increasing distance from the source of sewage infiltration, from 1.94 ?? (?? 0.20) x 106 ml-1 at 0.21 km to 0.25 (?? 0.02) x 106 ml-1 at 0.97 km. Bacterial abundance in groundwater sampled at 0.31 km correlated strongly with specific conductance and increased sharply from 4.0 (?? 0.3) x 104 ml-1 at a depth of 6 m to 1.58 (?? 0.12) x 106 ml-1 at 14 m, then declined at 20 and 31 m to 1.29 (?? 0.12) x 106 and 0.96 (?? 0.12) x 106 ml-1, respectively. A majority of the bacteria in contaminated and uncontaminated zones of the aquifer were bound to the surfaces of particulates, <60 ??m in diameter. The glucose uptake rate, assayed at in situ and 5 ??M concentrations, declined steadily in contaminated groundwater sampled along a transect. A preparative wet-sieving technique for use in processing core samples for bacterial enumeration is described and evaluated.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Effect of organic contamination upon microbial distributions and heterotrophic uptake in a cape cod, mass., aquifer
Series title Applied and Environmental Microbiology
Volume 48
Issue 6
Year Published 1984
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Applied and Environmental Microbiology
First page 1197
Last page 1202