Preliminary study on impact of land use on fish fauna at Kenyana river and its tributaries, Mukah, Sarawak

The assessment of blackwater fish fauna available at Kenyana River and its tributaries was conducted from 19th March until 21 5t March 2013. The study area is a natural habitat for variety types of blackwater fish including the Asian Arowana. In order to protect this valuable fish and its habitat...

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Main Author:	Hasanaliza, Binti Bujang Abdillah
Format:	Thesis
Language:	English
Published:	2013
Subjects:	GE Environmental Sciences
Online Access:	http://ir.unimas.my/id/eprint/10142/1/Hasanaliza.pdf
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id	my-unimas-ir.10142
record_format	uketd_dc
spelling	my-unimas-ir.101422023-04-18T07:52:01Z Preliminary study on impact of land use on fish fauna at Kenyana river and its tributaries, Mukah, Sarawak 2013 Hasanaliza, Binti Bujang Abdillah GE Environmental Sciences The assessment of blackwater fish fauna available at Kenyana River and its tributaries was conducted from 19th March until 21 5t March 2013. The study area is a natural habitat for variety types of blackwater fish including the Asian Arowana. In order to protect this valuable fish and its habitat, the area has been focus to be protected by local authority and it has been marked as sensitive area. Besides that, the area will become one of the ecotourism destinations in Mukah area. The fish sampling were conducted in three days and four sampling stations were chosen which located at Kenyana Lake Information Centre, Kenyana River mouth, Kenyana River and Liwak River) Monofilament gill nets were used (mesh size 5.1 cm, 7.6 cm and 10.1 cm) for fish sampl'fng. Each individual of fish caught were measured for total length, standard length, fork length and body weight. A total of 41 individual of fish were caught with overall 7 blackwater fish species identified which dominated by Pangasiidae (Pangasius macronemus) followed by Cyrprinidae (Anemalichlhys apogon), Notopteridae (Noloplerus chUala), Bagridae (Hemibagrus baramensis), Helostomatidae (Helosloma lemminckii), Osteoglossidae (Scleropages jormosus) and Siluridae (Wallago leerii). Station I (Liwak River) shows the most individual fish caught and the highest species diversity compared to other stations. However, the Shannon-Wiener diversity index H' in Liwak River was low with H' value 0.65 and this illustrate that the fish in Kenyana River and its tributaries were in agitated which might cause by the habitat disturbance in that area. As for species richness '0' in Station 1 was greater with value 1.41 as compared to the other station. Though the diversity index in Station I was high but the opposite result was shown for river water quality. Based on Water Quality Index (WQI), Station I was categorized as Class IV (polluted) and followed by Station 2 (Class III - polluted) and Station 3 (Class III - slightly polluted). The high value of nutrient input at Station 1 and 2 might be due to surface runoff that contained excessive fertilizer drained into the river during raining. Though the fish population was high in Station I with low water quality, this condition might due to the biasness in sampling time frame and method used. Nevertheless, the growing agricultural land use area especially oil palm plantation which located at the middle and upper part of the Kenyana Riv~r and its tributaries might influenced the river condition lead to habitat disturbance. Universiti Malaysia Sarawak, (UNIMAS) 2013 Thesis http://ir.unimas.my/id/eprint/10142/ http://ir.unimas.my/id/eprint/10142/1/Hasanaliza.pdf text en validuser masters Universiti Malaysia Sarawak, UNIMAS Faculty of Resource Science and Technology.
institution	Universiti Malaysia Sarawak
collection	UNIMAS Institutional Repository
language	English
topic	GE Environmental Sciences
spellingShingle	GE Environmental Sciences Hasanaliza, Binti Bujang Abdillah Preliminary study on impact of land use on fish fauna at Kenyana river and its tributaries, Mukah, Sarawak
description	The assessment of blackwater fish fauna available at Kenyana River and its tributaries was conducted from 19th March until 21 5t March 2013. The study area is a natural habitat for variety types of blackwater fish including the Asian Arowana. In order to protect this valuable fish and its habitat, the area has been focus to be protected by local authority and it has been marked as sensitive area. Besides that, the area will become one of the ecotourism destinations in Mukah area. The fish sampling were conducted in three days and four sampling stations were chosen which located at Kenyana Lake Information Centre, Kenyana River mouth, Kenyana River and Liwak River) Monofilament gill nets were used (mesh size 5.1 cm, 7.6 cm and 10.1 cm) for fish sampl'fng. Each individual of fish caught were measured for total length, standard length, fork length and body weight. A total of 41 individual of fish were caught with overall 7 blackwater fish species identified which dominated by Pangasiidae (Pangasius macronemus) followed by Cyrprinidae (Anemalichlhys apogon), Notopteridae (Noloplerus chUala), Bagridae (Hemibagrus baramensis), Helostomatidae (Helosloma lemminckii), Osteoglossidae (Scleropages jormosus) and Siluridae (Wallago leerii). Station I (Liwak River) shows the most individual fish caught and the highest species diversity compared to other stations. However, the Shannon-Wiener diversity index H' in Liwak River was low with H' value 0.65 and this illustrate that the fish in Kenyana River and its tributaries were in agitated which might cause by the habitat disturbance in that area. As for species richness '0' in Station 1 was greater with value 1.41 as compared to the other station. Though the diversity index in Station I was high but the opposite result was shown for river water quality. Based on Water Quality Index (WQI), Station I was categorized as Class IV (polluted) and followed by Station 2 (Class III - polluted) and Station 3 (Class III - slightly polluted). The high value of nutrient input at Station 1 and 2 might be due to surface runoff that contained excessive fertilizer drained into the river during raining. Though the fish population was high in Station I with low water quality, this condition might due to the biasness in sampling time frame and method used. Nevertheless, the growing agricultural land use area especially oil palm plantation which located at the middle and upper part of the Kenyana Riv~r and its tributaries might influenced the river condition lead to habitat disturbance.
format	Thesis
qualification_level	Master's degree
author	Hasanaliza, Binti Bujang Abdillah
author_facet	Hasanaliza, Binti Bujang Abdillah
author_sort	Hasanaliza, Binti Bujang Abdillah
title	Preliminary study on impact of land use on fish fauna at Kenyana river and its tributaries, Mukah, Sarawak
title_short	Preliminary study on impact of land use on fish fauna at Kenyana river and its tributaries, Mukah, Sarawak
title_full	Preliminary study on impact of land use on fish fauna at Kenyana river and its tributaries, Mukah, Sarawak
title_fullStr	Preliminary study on impact of land use on fish fauna at Kenyana river and its tributaries, Mukah, Sarawak
title_full_unstemmed	Preliminary study on impact of land use on fish fauna at Kenyana river and its tributaries, Mukah, Sarawak
title_sort	preliminary study on impact of land use on fish fauna at kenyana river and its tributaries, mukah, sarawak
granting_institution	Universiti Malaysia Sarawak, UNIMAS
granting_department	Faculty of Resource Science and Technology.
publishDate	2013
url	http://ir.unimas.my/id/eprint/10142/1/Hasanaliza.pdf
_version_	1783728014179172352

Preliminary study on impact of land use on fish fauna at Kenyana river and its tributaries, Mukah, Sarawak

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