Seasonal variability and fractionation of P-based nutrients in Sungai Setiu Basin, Terengganu, Malaysia

Seasonal variability and fractionation of P-based nutrients in Sungai Setiu Basin, Terengganu, Malaysia

A seasonal study of phosphorus (P)-based nutrients was carried out in Sungai Setiu basin which is located in the southern region of the South China Sea (Malaysia) from July 2010 until June 2011. Parameters measured were dissolved inorganic P (DIP), dissolved organic P (DOP) and total particulate P (...

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Main Authors: Hee, Yet Yin, Suhaimi Suratman, Norhayati Mohd Tahir, Jickells, Timothy
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2018
Online Access:http://journalarticle.ukm.my/12076/
http://journalarticle.ukm.my/12076/
http://journalarticle.ukm.my/12076/1/03%20Yet%20Yin%20Hee.pdf
id ukm-12076
recordtype eprints
spelling ukm-120762018-09-22T10:33:44Z http://journalarticle.ukm.my/12076/ Seasonal variability and fractionation of P-based nutrients in Sungai Setiu Basin, Terengganu, Malaysia Hee, Yet Yin Suhaimi Suratman, Norhayati Mohd Tahir, Jickells, Timothy A seasonal study of phosphorus (P)-based nutrients was carried out in Sungai Setiu basin which is located in the southern region of the South China Sea (Malaysia) from July 2010 until June 2011. Parameters measured were dissolved inorganic P (DIP), dissolved organic P (DOP) and total particulate P (TPP). In addition, DOP concentration was size fractionated into high molecular weight (HMW, 0.7 μm-100 kDa), middle MW (MMW, 100-30 kDa) and low MW (LMW, <30 kDa). The results show that the mean concentration of P-based nutrients ranged between 3.2-7.0 μg/L P for DIP, 5.6-12.1 μg/L P for DOP and 9.2-119.4 μg/L P for TPP. Higher mean concentrations of P were recorded at urban and agricultural areas. In addition, the distribution of P was affected by season as higher mean concentrations of P were observed during the north-east monsoon due to the surface runoff of nutrients during this heavy raining season. The fractionation study of DOP further revealed that HMW fraction was abundant in Sungai Setiu, making up approximately 60% of the total DOP. This high percentage of HMW DOP was recorded at stations in the vicinity of agriculture area and towns suggesting an important contribution from anthropogenic activities. The LMW DOP fraction was not significantly associated with chlorophyll-a, suggesting that the phytoplankton might not be the predominant contributor for LMW fraction in this river. We suggest that these organic nutrient inputs should be monitored as part of the management of the aquatic system. Penerbit Universiti Kebangsaan Malaysia 2018-05 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/12076/1/03%20Yet%20Yin%20Hee.pdf Hee, Yet Yin and Suhaimi Suratman, and Norhayati Mohd Tahir, and Jickells, Timothy (2018) Seasonal variability and fractionation of P-based nutrients in Sungai Setiu Basin, Terengganu, Malaysia. Sains Malaysiana, 47 (5). pp. 883-891. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol47num5_2018/contentsVol47num5_2018.html
repository_type Digital Repository
institution_category Local University
institution Universiti Kebangasaan Malaysia
building UKM Institutional Repository
collection Online Access
language English
description A seasonal study of phosphorus (P)-based nutrients was carried out in Sungai Setiu basin which is located in the southern region of the South China Sea (Malaysia) from July 2010 until June 2011. Parameters measured were dissolved inorganic P (DIP), dissolved organic P (DOP) and total particulate P (TPP). In addition, DOP concentration was size fractionated into high molecular weight (HMW, 0.7 μm-100 kDa), middle MW (MMW, 100-30 kDa) and low MW (LMW, <30 kDa). The results show that the mean concentration of P-based nutrients ranged between 3.2-7.0 μg/L P for DIP, 5.6-12.1 μg/L P for DOP and 9.2-119.4 μg/L P for TPP. Higher mean concentrations of P were recorded at urban and agricultural areas. In addition, the distribution of P was affected by season as higher mean concentrations of P were observed during the north-east monsoon due to the surface runoff of nutrients during this heavy raining season. The fractionation study of DOP further revealed that HMW fraction was abundant in Sungai Setiu, making up approximately 60% of the total DOP. This high percentage of HMW DOP was recorded at stations in the vicinity of agriculture area and towns suggesting an important contribution from anthropogenic activities. The LMW DOP fraction was not significantly associated with chlorophyll-a, suggesting that the phytoplankton might not be the predominant contributor for LMW fraction in this river. We suggest that these organic nutrient inputs should be monitored as part of the management of the aquatic system.
format Article
author Hee, Yet Yin
Suhaimi Suratman,
Norhayati Mohd Tahir,
Jickells, Timothy
spellingShingle Hee, Yet Yin
Suhaimi Suratman,
Norhayati Mohd Tahir,
Jickells, Timothy
Seasonal variability and fractionation of P-based nutrients in Sungai Setiu Basin, Terengganu, Malaysia
author_facet Hee, Yet Yin
Suhaimi Suratman,
Norhayati Mohd Tahir,
Jickells, Timothy
author_sort Hee, Yet Yin
title Seasonal variability and fractionation of P-based nutrients in Sungai Setiu Basin, Terengganu, Malaysia
title_short Seasonal variability and fractionation of P-based nutrients in Sungai Setiu Basin, Terengganu, Malaysia
title_full Seasonal variability and fractionation of P-based nutrients in Sungai Setiu Basin, Terengganu, Malaysia
title_fullStr Seasonal variability and fractionation of P-based nutrients in Sungai Setiu Basin, Terengganu, Malaysia
title_full_unstemmed Seasonal variability and fractionation of P-based nutrients in Sungai Setiu Basin, Terengganu, Malaysia
title_sort seasonal variability and fractionation of p-based nutrients in sungai setiu basin, terengganu, malaysia
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2018
url http://journalarticle.ukm.my/12076/
http://journalarticle.ukm.my/12076/
http://journalarticle.ukm.my/12076/1/03%20Yet%20Yin%20Hee.pdf
first_indexed 2023-09-18T20:01:48Z
last_indexed 2023-09-18T20:01:48Z
_version_ 1777406898169970688

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