The impact of eutrophication towards selected bacterial process rates in tropical coastal waters
Document Type
Article
Publication Date
8-1-2021
Abstract
The dissolved organic nutrient conditions and bacterial process rates at two tropical coastal sites in Peninsular Malaysia (Port Klang and Port Dickson) were initially studied in 2004-2005 period and later revisited in 2010-2011. We observed that dissolved organic nitrogen (DON) increased about two- and ten-fold at Port Klang and Port Dickson, respectively and resulted in a significant change in DOC:DON ratio (t 0.05). Among the bacterial processes measured, bacterial respiration (BR) was lower in the 2010-2011 period at both stations (t 0.01). BR also correlated to the DOC:DON ratio (R2 0.259, p < 0.01). The increase in substrate quality enabled the bacteria to respire less in the dissolved organic matter degradation. As a result, the average bacterial growth efficiency increased slightly in the 2010-2011 period.
Keywords
Eutrophication, Dissolved organic carbon, Dissolved organic nitrogen, Bacterial production, Bacterial respiration, Tropical coastal waters
Divisions
InstituteofBiologicalSciences,ocean
Funders
FRGS/1/2018/WAB09/UM/02/1,FP061-2018A,IOES-2014D
Publication Title
Marine Pollution Bulletin
Volume
169
Publisher
Pergamon-Elsevier Science Ltd
Publisher Location
THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND