ACTIVITY AND ABUNDANCE OF BACTERIOPLANKTON IN 3 DIVERSE LOWLAND WATERCOURSES

Citation
Sm. Yamakanamardi et R. Goulder, ACTIVITY AND ABUNDANCE OF BACTERIOPLANKTON IN 3 DIVERSE LOWLAND WATERCOURSES, Regulated rivers, 10(1), 1995, pp. 51-67
Citations number
NO
Categorie Soggetti
Environmental Sciences","Water Resources
Journal title
ISSN journal
08869375
Volume
10
Issue
1
Year of publication
1995
Pages
51 - 67
Database
ISI
SICI code
0886-9375(1995)10:1<51:AAAOBI>2.0.ZU;2-U
Abstract
The hypothesis that the activity and abundance of bacterioplankton wer e similar in two low-level fenland water courses, but were different f rom those in a high-level main river, was rejected. Mean values of V-m ax for glucose mineralization, V-max per bacterium, abundance of free- living and total directly counted bacteria, abundance of colony-formin g units and percentage of culturable bacteria were similar in the low- level Beverley and Barmston Drain and in the River Hull, but were less in the low-level Holderness Drain. The less favourable regime in the Holderness Drain was related to intermittently acid conditions. Tempor al variation by bacterioplankton in all three water courses was, howev er, also related to environmental variables other than pH, notably tem perature, chlorophyll, biochemical oxygen demand, current velocity, to tal suspended solids and particulate organic matter. The activity and abundance of bacterioplankton appeared to have increased in the River Hull between 1975-1976 and 1992-1994.