Staff View: Changes in Water and Sediment Quality of a River Being Impounded and Differences Among Functional Zones of the New Large Tropical Hydroelectric Reservoir

Changes in Water and Sediment Quality of a River Being Impounded and Differences Among Functional Zones of the New Large Tropical Hydroelectric Reservoir

Though more large tropical reservoirs are being constructed to meet the increasing energy demand, knowledge on the impact of damming a tropical river and the differences along the river after its impoundment is scarce. Thus, the present study aimed to increase our understanding of such differences...

Full description

Saved in:

Bibliographic Details
Main Authors:	Ling, Teck Yee, Soo, Chen Lin, Kho, Chui-Ping, Lee, Nyanti, Sim, Siong Fong, Lee, Karen Suan Ping, Tonny, Anak Ganyai
Format:	Article
Language:	English
Published:	Firma Wydawnicza HARD s.c. Jerzy Radecki Hanna Radecka 2019
Subjects:	GE Environmental Sciences Q Science (General) QD Chemistry
Online Access:	http://ir.unimas.my/id/eprint/26372/1/Lee%20Teck%20Yee.pdf http://ir.unimas.my/id/eprint/26372/ http://www.pjoes.com/Changes-in-Water-and-Sediment-Quality-nof-a-River-Being-Impounded-and-Differences,97397,0,2.html
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my.unimas.ir.26372
record_format	eprints
spelling	my.unimas.ir.263722021-04-06T01:41:30Z http://ir.unimas.my/id/eprint/26372/ Changes in Water and Sediment Quality of a River Being Impounded and Differences Among Functional Zones of the New Large Tropical Hydroelectric Reservoir Ling, Teck Yee Soo, Chen Lin Kho, Chui-Ping Lee, Nyanti Sim, Siong Fong Lee, Karen Suan Ping Tonny, Anak Ganyai GE Environmental Sciences Q Science (General) QD Chemistry Though more large tropical reservoirs are being constructed to meet the increasing energy demand, knowledge on the impact of damming a tropical river and the differences along the river after its impoundment is scarce. Thus, the present study aimed to increase our understanding of such differences both longitudinally and vertically. Water and sediment samples were collected at three different functional zones in the Murum River basin 10 months after impoundment began. Results show that the impoundment has an impact on both the water and sediment. Longitudinal variations of water and sediment characteristics were observed at different functional zones. The upstream riverine zone subjected to anthropogenic activities serves as the main input of suspended solids and nutrients to the reservoir. The nitrogen changed from a high nitrate and low ammonia condition prior to impoundment to a low nitrate and high ammonia condition due to the accumulation of organic matter and slow nitrification rate after impoundment. In the transitional and lacustrine zones, vertical stratifications of dissolved oxygen and temperature were observed. The thickness of a well-oxygenated column for sensitive aquatic organisms was only 2 m at some stations. Water quality in all zones showed impairment during the filling phase as compared to the good water quality index before impoundment. The reduction of suspended solids in the surface water column in the transitional and lacustrine zones is a positive change for aquatic organisms. Sediment characteristics were found to be distinct in the transitional zone, where it was lower in sand and higher in silt, clay, organic carbon and nutrients in contrast to the riverine Firma Wydawnicza HARD s.c. Jerzy Radecki Hanna Radecka 2019 Article PeerReviewed text en http://ir.unimas.my/id/eprint/26372/1/Lee%20Teck%20Yee.pdf Ling, Teck Yee and Soo, Chen Lin and Kho, Chui-Ping and Lee, Nyanti and Sim, Siong Fong and Lee, Karen Suan Ping and Tonny, Anak Ganyai (2019) Changes in Water and Sediment Quality of a River Being Impounded and Differences Among Functional Zones of the New Large Tropical Hydroelectric Reservoir. Polish Journal of Environmental Studies, 28 (6). pp. 1-15. ISSN 2083-5906 http://www.pjoes.com/Changes-in-Water-and-Sediment-Quality-nof-a-River-Being-Impounded-and-Differences,97397,0,2.html DOI: https://doi.org/10.15244/pjoes/97397
institution	Universiti Malaysia Sarawak
building	Centre for Academic Information Services (CAIS)
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Sarawak
content_source	UNIMAS Institutional Repository
url_provider	http://ir.unimas.my/
language	English
topic	GE Environmental Sciences Q Science (General) QD Chemistry
spellingShingle	GE Environmental Sciences Q Science (General) QD Chemistry Ling, Teck Yee Soo, Chen Lin Kho, Chui-Ping Lee, Nyanti Sim, Siong Fong Lee, Karen Suan Ping Tonny, Anak Ganyai Changes in Water and Sediment Quality of a River Being Impounded and Differences Among Functional Zones of the New Large Tropical Hydroelectric Reservoir
description	Though more large tropical reservoirs are being constructed to meet the increasing energy demand, knowledge on the impact of damming a tropical river and the differences along the river after its impoundment is scarce. Thus, the present study aimed to increase our understanding of such differences both longitudinally and vertically. Water and sediment samples were collected at three different functional zones in the Murum River basin 10 months after impoundment began. Results show that the impoundment has an impact on both the water and sediment. Longitudinal variations of water and sediment characteristics were observed at different functional zones. The upstream riverine zone subjected to anthropogenic activities serves as the main input of suspended solids and nutrients to the reservoir. The nitrogen changed from a high nitrate and low ammonia condition prior to impoundment to a low nitrate and high ammonia condition due to the accumulation of organic matter and slow nitrification rate after impoundment. In the transitional and lacustrine zones, vertical stratifications of dissolved oxygen and temperature were observed. The thickness of a well-oxygenated column for sensitive aquatic organisms was only 2 m at some stations. Water quality in all zones showed impairment during the filling phase as compared to the good water quality index before impoundment. The reduction of suspended solids in the surface water column in the transitional and lacustrine zones is a positive change for aquatic organisms. Sediment characteristics were found to be distinct in the transitional zone, where it was lower in sand and higher in silt, clay, organic carbon and nutrients in contrast to the riverine
format	Article
author	Ling, Teck Yee Soo, Chen Lin Kho, Chui-Ping Lee, Nyanti Sim, Siong Fong Lee, Karen Suan Ping Tonny, Anak Ganyai
author_facet	Ling, Teck Yee Soo, Chen Lin Kho, Chui-Ping Lee, Nyanti Sim, Siong Fong Lee, Karen Suan Ping Tonny, Anak Ganyai
author_sort	Ling, Teck Yee
title	Changes in Water and Sediment Quality of a River Being Impounded and Differences Among Functional Zones of the New Large Tropical Hydroelectric Reservoir
title_short	Changes in Water and Sediment Quality of a River Being Impounded and Differences Among Functional Zones of the New Large Tropical Hydroelectric Reservoir
title_full	Changes in Water and Sediment Quality of a River Being Impounded and Differences Among Functional Zones of the New Large Tropical Hydroelectric Reservoir
title_fullStr	Changes in Water and Sediment Quality of a River Being Impounded and Differences Among Functional Zones of the New Large Tropical Hydroelectric Reservoir
title_full_unstemmed	Changes in Water and Sediment Quality of a River Being Impounded and Differences Among Functional Zones of the New Large Tropical Hydroelectric Reservoir
title_sort	changes in water and sediment quality of a river being impounded and differences among functional zones of the new large tropical hydroelectric reservoir
publisher	Firma Wydawnicza HARD s.c. Jerzy Radecki Hanna Radecka
publishDate	2019
url	http://ir.unimas.my/id/eprint/26372/1/Lee%20Teck%20Yee.pdf http://ir.unimas.my/id/eprint/26372/ http://www.pjoes.com/Changes-in-Water-and-Sediment-Quality-nof-a-River-Being-Impounded-and-Differences,97397,0,2.html
_version_	1696979496986476544
score	13.211869

Changes in Water and Sediment Quality of a River Being Impounded and Differences Among Functional Zones of the New Large Tropical Hydroelectric Reservoir

Similar Items