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Water quality and aquatic insects study at the Lower Kinabatangan River Catchment, Sabah: in response to weak La Niña event

A study on water quality and aquatic insects has been conducted at the Lower Kinabatangan River Catchment, Sabah, Malaysia. The quality of water surface and aquatic insects’ composition were studied in streams near to oil palm plantation (OP), secondary forest (SF) and oxbow lake (OB). The study...

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Main Authors: Sahana Harun,, Salman Abdo Al-Shami,, Ramzah Dambul,, Maryati Mohamed,, Mohd Harun Abdullah,
Format: Article
Language:English
Published: Universiti Kebangsaan Malaysia 2015
Online Access:http://journalarticle.ukm.my/8632/1/09_Sahana_Harun.pdf
http://journalarticle.ukm.my/8632/
http://www.ukm.my/jsm/malay_journals/jilid44bil4_2015/KandunganJilid44Bil4_2015.html
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spelling my-ukm.journal.86322016-12-14T06:47:44Z http://journalarticle.ukm.my/8632/ Water quality and aquatic insects study at the Lower Kinabatangan River Catchment, Sabah: in response to weak La Niña event Sahana Harun, Salman Abdo Al-Shami, Ramzah Dambul, Maryati Mohamed, Mohd Harun Abdullah, A study on water quality and aquatic insects has been conducted at the Lower Kinabatangan River Catchment, Sabah, Malaysia. The quality of water surface and aquatic insects’ composition were studied in streams near to oil palm plantation (OP), secondary forest (SF) and oxbow lake (OB). The study also aims to identify the seasonal variation in the aquatic insects’ composition during the weak La Niña event. A total of 135 water samples and 1678 aquatic insect individuals (four orders and 14 families) were collected during fieldwork campaign that spanned over the inter-monsoonal period, wet and dry seasons between October 2004 and June 2005. OP has the highest abundance of aquatic insects particularly during the dry season. Biological indices showed that all stations were in moderate water category. The water quality index (WQI) was calculated and indicated that the quality of the river categorised into Class II. Discriminant analysis (DA) was employed to classify the independent variables into mutually-exclusive groups. Suspended sediment (SS) and chemical oxygen demand (COD) were high during the wet season. Suspended sediment was high in oxbow lake and could be a strong reason behind low abundance of aquatic insects. Precipitation anomalies were found to affect seasonal variations of water quality and aquatic insects at the Lower Kinabatangan River. Universiti Kebangsaan Malaysia 2015-04 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/8632/1/09_Sahana_Harun.pdf Sahana Harun, and Salman Abdo Al-Shami, and Ramzah Dambul, and Maryati Mohamed, and Mohd Harun Abdullah, (2015) Water quality and aquatic insects study at the Lower Kinabatangan River Catchment, Sabah: in response to weak La Niña event. Sains Malaysiana, 44 (4). pp. 545-558. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid44bil4_2015/KandunganJilid44Bil4_2015.html
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description A study on water quality and aquatic insects has been conducted at the Lower Kinabatangan River Catchment, Sabah, Malaysia. The quality of water surface and aquatic insects’ composition were studied in streams near to oil palm plantation (OP), secondary forest (SF) and oxbow lake (OB). The study also aims to identify the seasonal variation in the aquatic insects’ composition during the weak La Niña event. A total of 135 water samples and 1678 aquatic insect individuals (four orders and 14 families) were collected during fieldwork campaign that spanned over the inter-monsoonal period, wet and dry seasons between October 2004 and June 2005. OP has the highest abundance of aquatic insects particularly during the dry season. Biological indices showed that all stations were in moderate water category. The water quality index (WQI) was calculated and indicated that the quality of the river categorised into Class II. Discriminant analysis (DA) was employed to classify the independent variables into mutually-exclusive groups. Suspended sediment (SS) and chemical oxygen demand (COD) were high during the wet season. Suspended sediment was high in oxbow lake and could be a strong reason behind low abundance of aquatic insects. Precipitation anomalies were found to affect seasonal variations of water quality and aquatic insects at the Lower Kinabatangan River.
format Article
author Sahana Harun,
Salman Abdo Al-Shami,
Ramzah Dambul,
Maryati Mohamed,
Mohd Harun Abdullah,
spellingShingle Sahana Harun,
Salman Abdo Al-Shami,
Ramzah Dambul,
Maryati Mohamed,
Mohd Harun Abdullah,
Water quality and aquatic insects study at the Lower Kinabatangan River Catchment, Sabah: in response to weak La Niña event
author_facet Sahana Harun,
Salman Abdo Al-Shami,
Ramzah Dambul,
Maryati Mohamed,
Mohd Harun Abdullah,
author_sort Sahana Harun,
title Water quality and aquatic insects study at the Lower Kinabatangan River Catchment, Sabah: in response to weak La Niña event
title_short Water quality and aquatic insects study at the Lower Kinabatangan River Catchment, Sabah: in response to weak La Niña event
title_full Water quality and aquatic insects study at the Lower Kinabatangan River Catchment, Sabah: in response to weak La Niña event
title_fullStr Water quality and aquatic insects study at the Lower Kinabatangan River Catchment, Sabah: in response to weak La Niña event
title_full_unstemmed Water quality and aquatic insects study at the Lower Kinabatangan River Catchment, Sabah: in response to weak La Niña event
title_sort water quality and aquatic insects study at the lower kinabatangan river catchment, sabah: in response to weak la niña event
publisher Universiti Kebangsaan Malaysia
publishDate 2015
url http://journalarticle.ukm.my/8632/1/09_Sahana_Harun.pdf
http://journalarticle.ukm.my/8632/
http://www.ukm.my/jsm/malay_journals/jilid44bil4_2015/KandunganJilid44Bil4_2015.html
_version_ 1643737534880022528
score 13.211869

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