Dangos Staff: Evaluation of spatial and seasonal variations of dissolved organic matter in Maliau Basin, Sabah, Malaysia

Evaluation of spatial and seasonal variations of dissolved organic matter in Maliau Basin, Sabah, Malaysia

The characteristics dissolved organic matter (DOM) and surface water quality in Maliau Basin, Sabah, Malaysia, were determined from December 2014 to September 2015. The objectives of this study were: (i). to distinguish the surface water quality of rivers which consisted of different types of land u...

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Prif Awduron:	Tan, Sin Yee, Sahana Harun, Kueh, Boon Hee, Arman Hadi Fikri
Fformat:	Journal Contribution
Iaith:	English
Cyhoeddwyd:	2020
Pynciau:	Rivers Forest reserves Sampling Surface water Multiple land use Seasonal variation Physicochemical properties Statistical analysis Alkalinity Dissolved oxygen Soil hydraulic conductivity Water temperature Acidity Habitats Water quality
Mynediad Ar-lein:	http://agris.upm.edu.my:8080/dspace/handle/0/17491
Tagiau:	Ychwanegu Tag Dim Tagiau, Byddwch y cyntaf i dagio'r cofnod hwn!

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spelling	oai:http:--agris.upm.edu.my:0-17491Evaluation of spatial and seasonal variations of dissolved organic matter in Maliau Basin, Sabah, MalaysiaTan, Sin YeeSahana HarunKueh, Boon HeeArman Hadi FikriRiversForest reservesSamplingSurface waterMultiple land useSeasonal variationPhysicochemical propertiesStatistical analysisAlkalinityDissolved oxygenSoil hydraulic conductivityWater temperatureAcidityHabitatsWater qualityThe characteristics dissolved organic matter (DOM) and surface water quality in Maliau Basin, Sabah, Malaysia, were determined from December 2014 to September 2015. The objectives of this study were: (i). to distinguish the surface water quality of rivers which consisted of different types of land use: primary forest (PF), secondary forest (SF), main river (MR) and altered habitat (AH); (ii). to assess seasonal variations of the water quality. A total of 36 water samples were collected during the fieldwork campaign that extended over high and low rainfall periods. The water quality physico-chemical parameters such as water temperature, pH, dissolved oxygen (DO), conductivity, and salinity were measured in-situ with the YSI-multiparameter instrument, while dissolved organic carbon (DOC) concentration was evaluated using Shimadzu TOC-V-SCH analyzer with autosampler TOC-ASI-V equipped. Dissolved organic matter (DOM) was determined optically in the laboratory at 254 (a254), 340 (a340) and 410 (a410). Discriminant analysis (DA) was employed to organize independent variables into mutuallyexclusive groups. The outcome of DA indicated that water temperature, total suspended solid (TSS), and conductivity were dominant at AH, whilst a340 was dominant at MR in March 2015. Our results also showed seasonal variations for water quality parameters. The highest mean concentrations of pH and a340 were found during the dry period (March 2015) and dissolved oxygen (DO) during the wet season (December 2014), suggesting spatio-seasonal variations of DOM and water quality parameters were determined by environmental factors such as precipitation, water velocity and discharge amount. UV-vis absorptions a254 and a340 show significant positive correlation with dissolved organic carbon (DOC), suggesting that it could be a suitable proxy for DOC concentration for tropical flowing water.2020-08-04T08:29:09Z2020-08-04T08:29:09Z2017Journal ContributionArticleNon-RefereedJournal of Tropical Biology and Conservation, 14, p. 105-1241823-3902http://agris.upm.edu.my:8080/dspace/handle/0/17491MY2020050797enhttps://jurcon.ums.edu.my/ojums/index.php/jtbc/article/view/892Malaysiahttp://www.oceandocs.org/license
institution	AGRIS
collection	AGRIS
language	English
topic	Rivers Forest reserves Sampling Surface water Multiple land use Seasonal variation Physicochemical properties Statistical analysis Alkalinity Dissolved oxygen Soil hydraulic conductivity Water temperature Acidity Habitats Water quality
spellingShingle	Rivers Forest reserves Sampling Surface water Multiple land use Seasonal variation Physicochemical properties Statistical analysis Alkalinity Dissolved oxygen Soil hydraulic conductivity Water temperature Acidity Habitats Water quality Tan, Sin Yee Sahana Harun Kueh, Boon Hee Arman Hadi Fikri Evaluation of spatial and seasonal variations of dissolved organic matter in Maliau Basin, Sabah, Malaysia
description	The characteristics dissolved organic matter (DOM) and surface water quality in Maliau Basin, Sabah, Malaysia, were determined from December 2014 to September 2015. The objectives of this study were: (i). to distinguish the surface water quality of rivers which consisted of different types of land use: primary forest (PF), secondary forest (SF), main river (MR) and altered habitat (AH); (ii). to assess seasonal variations of the water quality. A total of 36 water samples were collected during the fieldwork campaign that extended over high and low rainfall periods. The water quality physico-chemical parameters such as water temperature, pH, dissolved oxygen (DO), conductivity, and salinity were measured in-situ with the YSI-multiparameter instrument, while dissolved organic carbon (DOC) concentration was evaluated using Shimadzu TOC-V-SCH analyzer with autosampler TOC-ASI-V equipped. Dissolved organic matter (DOM) was determined optically in the laboratory at 254 (a254), 340 (a340) and 410 (a410). Discriminant analysis (DA) was employed to organize independent variables into mutuallyexclusive groups. The outcome of DA indicated that water temperature, total suspended solid (TSS), and conductivity were dominant at AH, whilst a340 was dominant at MR in March 2015. Our results also showed seasonal variations for water quality parameters. The highest mean concentrations of pH and a340 were found during the dry period (March 2015) and dissolved oxygen (DO) during the wet season (December 2014), suggesting spatio-seasonal variations of DOM and water quality parameters were determined by environmental factors such as precipitation, water velocity and discharge amount. UV-vis absorptions a254 and a340 show significant positive correlation with dissolved organic carbon (DOC), suggesting that it could be a suitable proxy for DOC concentration for tropical flowing water.
format	Journal Contribution
author	Tan, Sin Yee Sahana Harun Kueh, Boon Hee Arman Hadi Fikri
author_facet	Tan, Sin Yee Sahana Harun Kueh, Boon Hee Arman Hadi Fikri
author_sort	Tan, Sin Yee
title	Evaluation of spatial and seasonal variations of dissolved organic matter in Maliau Basin, Sabah, Malaysia
title_short	Evaluation of spatial and seasonal variations of dissolved organic matter in Maliau Basin, Sabah, Malaysia
title_full	Evaluation of spatial and seasonal variations of dissolved organic matter in Maliau Basin, Sabah, Malaysia
title_fullStr	Evaluation of spatial and seasonal variations of dissolved organic matter in Maliau Basin, Sabah, Malaysia
title_full_unstemmed	Evaluation of spatial and seasonal variations of dissolved organic matter in Maliau Basin, Sabah, Malaysia
title_sort	evaluation of spatial and seasonal variations of dissolved organic matter in maliau basin, sabah, malaysia
publishDate	2020
url	http://agris.upm.edu.my:8080/dspace/handle/0/17491
_version_	1819285362834407424
score	13.4562235

Evaluation of spatial and seasonal variations of dissolved organic matter in Maliau Basin, Sabah, Malaysia

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