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Comparative limnology of natural and man-made tropical lakes


Sharip, Zati and Md Yusoff, Fatimah and Jusoh, Juhaimi and Jamin, Aminuddin (2019) Comparative limnology of natural and man-made tropical lakes. IOP Conference Series: Earth and Environmental Science, 380. art. no. 012019. pp. 1-9. ISSN 1755-1315


This paper assessed and compared physicochemical profiles and biodiversity indices of two shallow lakes namely the natural Bera Lake and Bukit Merah reservoir in Peninsular Malaysia. Variations in relation to hydro-meteorological variables, including rainfall, wind speed and air temperature were also measured during the field sampling. The results showed clear distinctions between natural and man-made lakes in terms of physical and chemical properties of lake waters and their relationships to the hydro-meteorological dynamic. Persistent oxygen and temperature differences between the epilimnion and hypolimnion were clearly detected in Bukit Merah reservoir under low winds and strong heat. Oxycline also persist during flooding or high turbidity levels indicating their enriched bottom waters. On the other hand, the natural Bera lake showed temporary stratification during the dry season with low winds but the water columns were thoroughly mixed during the wet season when the water temperature was lower and wind speed was higher. Plankton diversity in Bera lake was significantly higher (p <0.05) than the Bukit Merah reservoir, probably due to the much longer history of the natural lake compared to the man-made one. Due to the longer residence time of the reservoir compared to the natural lake, the former tends to be more vulnerable to eutrophication if subjected to uncontrolled nutrient enrichment.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
DOI Number: https://doi.org/10.1088/1755-1315/380/1/012019
Publisher: Institute of Physics
Keywords: Phytoplankton; Water temperature; Natural Bera lake
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 14 Oct 2020 19:59
Last Modified: 14 Oct 2020 19:59
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1088/1755-1315/380/1/012019
URI: http://psasir.upm.edu.my/id/eprint/80967
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