The impact of eutrophication towards selected bacterial process rates in tropical coastal waters

Lim, Joon Hai and Lee, Choon Weng and Bong, Chui Wei and Kudo, Isao (2021) The impact of eutrophication towards selected bacterial process rates in tropical coastal waters. Marine Pollution Bulletin, 169. ISSN 0025-326X, DOI https://doi.org/10.1016/j.marpolbul.2021.112524.

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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.

Item Type: Article
Funders: FRGS/1/2018/WAB09/UM/02/1, FP061-2018A, IOES-2014D
Uncontrolled Keywords: Eutrophication; Dissolved organic carbon; Dissolved organic nitrogen; Bacterial production; Bacterial respiration; Tropical coastal waters
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science > Institute of Biological Sciences
Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 07 Apr 2022 04:51
Last Modified: 07 Apr 2022 04:51
URI: http://eprints.um.edu.my/id/eprint/26670

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