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Seasonal water quality and trophic status of shallow lentic waters and their association with water levels

Extreme hydro-climatic changes associated with floods and drought greatly influence the ecosystem dynamic of tropical lakes in Malaysia, resulting in negative impacts on their water quality and trophic status. This study examined the seasonal changes in water quality and trophic state connected to h...

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Main Authors: Sharip, Zati, Md. Yusoff, Fatimah, Jamin, Aminuddin
Format: Article
Language:English
Published: Springer 2019
Online Access:http://psasir.upm.edu.my/id/eprint/82075/1/Seasonal%20water%20quality%20and%20trophic%20status%20of%20shallow%20lentic%20waters%20and%20their%20association%20with%20water%20levels.pdf
http://psasir.upm.edu.my/id/eprint/82075/
https://link.springer.com/article/10.1007/s13762-018-2172-2
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spelling my.upm.eprints.820752021-08-13T09:18:01Z http://psasir.upm.edu.my/id/eprint/82075/ Seasonal water quality and trophic status of shallow lentic waters and their association with water levels Sharip, Zati Md. Yusoff, Fatimah Jamin, Aminuddin Extreme hydro-climatic changes associated with floods and drought greatly influence the ecosystem dynamic of tropical lakes in Malaysia, resulting in negative impacts on their water quality and trophic status. This study examined the seasonal changes in water quality and trophic state connected to hydro-ecological changes in a natural lake and two reservoirs. Water levels in the three water bodies varied with changes in rainfall regime, and water regulation for irrigation or water supply. Multivariate analysis of variance showed a significant relationship between season and temperature, pH, conductivity, total nitrogen and chlorophyll-a (p < 0.05). Drought events and the associated period of low water levels were characterized by high temperature, conductivity and chlorophyll-a levels in these shallow lakes, which probably led to high photosynthetic rates with concomitant increase in dissolved oxygen and pH and decrease in total nitrogen concentration. Elevated chlorophyll-a and total phosphorus concentrations were also associated with drought events and the decrease in water level in Bukit Merah Reservoir, possibly due to the release of phosphorus from internal loading resulting from sediment re-suspension by wind. Salinity increase in Durian Tunggal Reservoir during dry season was possibly due to seawater intrusion into river. During the rainy season, transparency in Bera Lake and Bukit Merah Reservoir was strongly influenced by the influxes of the main river that transported elevated levels of suspended solids and nutrients. Springer 2019-08 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/82075/1/Seasonal%20water%20quality%20and%20trophic%20status%20of%20shallow%20lentic%20waters%20and%20their%20association%20with%20water%20levels.pdf Sharip, Zati and Md. Yusoff, Fatimah and Jamin, Aminuddin (2019) Seasonal water quality and trophic status of shallow lentic waters and their association with water levels. International Journal of Environmental Science and Technology, 16 (4). pp. 4851-4862. ISSN 1735-1472; ESSN: 1735-2630 https://link.springer.com/article/10.1007/s13762-018-2172-2 10.1007/s13762-018-2172-2
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Extreme hydro-climatic changes associated with floods and drought greatly influence the ecosystem dynamic of tropical lakes in Malaysia, resulting in negative impacts on their water quality and trophic status. This study examined the seasonal changes in water quality and trophic state connected to hydro-ecological changes in a natural lake and two reservoirs. Water levels in the three water bodies varied with changes in rainfall regime, and water regulation for irrigation or water supply. Multivariate analysis of variance showed a significant relationship between season and temperature, pH, conductivity, total nitrogen and chlorophyll-a (p < 0.05). Drought events and the associated period of low water levels were characterized by high temperature, conductivity and chlorophyll-a levels in these shallow lakes, which probably led to high photosynthetic rates with concomitant increase in dissolved oxygen and pH and decrease in total nitrogen concentration. Elevated chlorophyll-a and total phosphorus concentrations were also associated with drought events and the decrease in water level in Bukit Merah Reservoir, possibly due to the release of phosphorus from internal loading resulting from sediment re-suspension by wind. Salinity increase in Durian Tunggal Reservoir during dry season was possibly due to seawater intrusion into river. During the rainy season, transparency in Bera Lake and Bukit Merah Reservoir was strongly influenced by the influxes of the main river that transported elevated levels of suspended solids and nutrients.
format Article
author Sharip, Zati
Md. Yusoff, Fatimah
Jamin, Aminuddin
spellingShingle Sharip, Zati
Md. Yusoff, Fatimah
Jamin, Aminuddin
Seasonal water quality and trophic status of shallow lentic waters and their association with water levels
author_facet Sharip, Zati
Md. Yusoff, Fatimah
Jamin, Aminuddin
author_sort Sharip, Zati
title Seasonal water quality and trophic status of shallow lentic waters and their association with water levels
title_short Seasonal water quality and trophic status of shallow lentic waters and their association with water levels
title_full Seasonal water quality and trophic status of shallow lentic waters and their association with water levels
title_fullStr Seasonal water quality and trophic status of shallow lentic waters and their association with water levels
title_full_unstemmed Seasonal water quality and trophic status of shallow lentic waters and their association with water levels
title_sort seasonal water quality and trophic status of shallow lentic waters and their association with water levels
publisher Springer
publishDate 2019
url http://psasir.upm.edu.my/id/eprint/82075/1/Seasonal%20water%20quality%20and%20trophic%20status%20of%20shallow%20lentic%20waters%20and%20their%20association%20with%20water%20levels.pdf
http://psasir.upm.edu.my/id/eprint/82075/
https://link.springer.com/article/10.1007/s13762-018-2172-2
_version_ 1709668996478926848
score 13.211869

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