Community structure of fishes and macroinvertebrates and their relationships with selected habitat characteristics in tributaries of upper Sarawak Kiri River, Sarawak

A study of the relationships among community structure of fish and macroinvertebrate with vegetation cover types and water quality was conducted at six tributaries of upper Sarawak Kiri River: Sawah River, Kan River, Menying River, Abang River, Temong River and Semadang River with twelve sampling f...

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Main Author:	Angie, Sapis
Format:	Thesis
Language:	English
Published:	2014
Subjects:	GE Environmental Sciences
Online Access:	http://ir.unimas.my/id/eprint/9026/3/Angie%20anak%20Sapis%20ft.pdf
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spelling	my-unimas-ir.90262024-09-13T08:37:24Z Community structure of fishes and macroinvertebrates and their relationships with selected habitat characteristics in tributaries of upper Sarawak Kiri River, Sarawak 2014 Angie, Sapis GE Environmental Sciences A study of the relationships among community structure of fish and macroinvertebrate with vegetation cover types and water quality was conducted at six tributaries of upper Sarawak Kiri River: Sawah River, Kan River, Menying River, Abang River, Temong River and Semadang River with twelve sampling from October 2011 to September 2012. Fish and macroinvertebrate sampling were carried out using electrofishing technique while water quality sampling was conducted in-situ and ex-situ. Stream and habitat assessment was also recorded at each station. ArcGIS 9.2 Desktop GIS software, with the aid of digital base map was used to delineate catchment boundaries of each watershed. GIS tools were used to calculate the percentage and area of each river catchment and to estimate the area of each vegetation cover types. Vegetation cover types in each tributary catchment were categorised into six types which are open areas, intensive farming system, traditional agroforestry and rubber farming, young secondary forests, old secondary forests and primary forests. Pearson’s correlation analysis, Analysis of Variance (ANOVA), Principal Component Analysis (PCA), Detrended Correspondence Analysis (DCA), and multiple (Stepwise method) linear regression were conducted to study the community structure of fish and macroinvertebrate and their relationships with selected habitat characteristics in the six tributaries of upper Sarawak Kiri River. The objectives of this thesis were to determine species diversity and abundance of fish and macroinvertebrate at six tributaries of upper Sarawak Kiri River, to determine the the relationships between community structure of fish and macroinvertebrate, stream physicochemical parameters, vegetation cover and water quality and to determine the most important parameters influencing community structure of the fauna. The water quality parameters (except dissolved oxygen, biochemical oxygen demand, ammonium-nitrogen, and nitrate) were significantly (p < 0.05) different among the sampling stations. A total of 2,708 fishes belonging to 35 species, 21 genera, and 11 families are recorded in the study area. Fish belonging to the family Cyprinidae, Mastacembelidae, Hemiramphidae and Channidae are widely distributed among all the six sampling stations. High diversity and abundance of fish, especially the intolerant species, Tor douronensis, Gastromyzon spp., and Leiocassiss micropogon, are recorded in the forested rivers and catchments of Semadang River, Sawah River, Kan River, Temong River and Abang River. A total of 64 taxa from 41 families belonging to 15 order of macroinvertebrate were recorded in this study. The study areas are dominated by Ephemeroptera and Decapoda as well as cosmopolitan species such as Isolapotamon consobrinum from the family Potamidae belonging to Decapoda (Brachyra), Macrobrachium pilimanus from the family Palaemonidae belonging to Decapoda (Caridae), and Chlorogomphus sp. from the family Chlorogomphidae belonging to Odonata. Results of statistical analyses show that the assemblages of fish and macroinvertebrate are highly influenced by the width of the rivers. In addition, different vegetation cover variables within the river catchments also influenced the assemblages of these aquatic fauna in the river. Universiti Malaysia Sarawak, (UNIMAS) 2014 Thesis http://ir.unimas.my/id/eprint/9026/ http://ir.unimas.my/id/eprint/9026/3/Angie%20anak%20Sapis%20ft.pdf text en validuser masters Universiti Malaysia Sarawak Institute of Biodiversity and Environmental Conservation
institution	Universiti Malaysia Sarawak
collection	UNIMAS Institutional Repository
language	English
topic	GE Environmental Sciences
spellingShingle	GE Environmental Sciences Angie, Sapis Community structure of fishes and macroinvertebrates and their relationships with selected habitat characteristics in tributaries of upper Sarawak Kiri River, Sarawak
description	A study of the relationships among community structure of fish and macroinvertebrate with vegetation cover types and water quality was conducted at six tributaries of upper Sarawak Kiri River: Sawah River, Kan River, Menying River, Abang River, Temong River and Semadang River with twelve sampling from October 2011 to September 2012. Fish and macroinvertebrate sampling were carried out using electrofishing technique while water quality sampling was conducted in-situ and ex-situ. Stream and habitat assessment was also recorded at each station. ArcGIS 9.2 Desktop GIS software, with the aid of digital base map was used to delineate catchment boundaries of each watershed. GIS tools were used to calculate the percentage and area of each river catchment and to estimate the area of each vegetation cover types. Vegetation cover types in each tributary catchment were categorised into six types which are open areas, intensive farming system, traditional agroforestry and rubber farming, young secondary forests, old secondary forests and primary forests. Pearson’s correlation analysis, Analysis of Variance (ANOVA), Principal Component Analysis (PCA), Detrended Correspondence Analysis (DCA), and multiple (Stepwise method) linear regression were conducted to study the community structure of fish and macroinvertebrate and their relationships with selected habitat characteristics in the six tributaries of upper Sarawak Kiri River. The objectives of this thesis were to determine species diversity and abundance of fish and macroinvertebrate at six tributaries of upper Sarawak Kiri River, to determine the the relationships between community structure of fish and macroinvertebrate, stream physicochemical parameters, vegetation cover and water quality and to determine the most important parameters influencing community structure of the fauna. The water quality parameters (except dissolved oxygen, biochemical oxygen demand, ammonium-nitrogen, and nitrate) were significantly (p < 0.05) different among the sampling stations. A total of 2,708 fishes belonging to 35 species, 21 genera, and 11 families are recorded in the study area. Fish belonging to the family Cyprinidae, Mastacembelidae, Hemiramphidae and Channidae are widely distributed among all the six sampling stations. High diversity and abundance of fish, especially the intolerant species, Tor douronensis, Gastromyzon spp., and Leiocassiss micropogon, are recorded in the forested rivers and catchments of Semadang River, Sawah River, Kan River, Temong River and Abang River. A total of 64 taxa from 41 families belonging to 15 order of macroinvertebrate were recorded in this study. The study areas are dominated by Ephemeroptera and Decapoda as well as cosmopolitan species such as Isolapotamon consobrinum from the family Potamidae belonging to Decapoda (Brachyra), Macrobrachium pilimanus from the family Palaemonidae belonging to Decapoda (Caridae), and Chlorogomphus sp. from the family Chlorogomphidae belonging to Odonata. Results of statistical analyses show that the assemblages of fish and macroinvertebrate are highly influenced by the width of the rivers. In addition, different vegetation cover variables within the river catchments also influenced the assemblages of these aquatic fauna in the river.
format	Thesis
qualification_level	Master's degree
author	Angie, Sapis
author_facet	Angie, Sapis
author_sort	Angie, Sapis
title	Community structure of fishes and macroinvertebrates and their relationships with selected habitat characteristics in tributaries of upper Sarawak Kiri River, Sarawak
title_short	Community structure of fishes and macroinvertebrates and their relationships with selected habitat characteristics in tributaries of upper Sarawak Kiri River, Sarawak
title_full	Community structure of fishes and macroinvertebrates and their relationships with selected habitat characteristics in tributaries of upper Sarawak Kiri River, Sarawak
title_fullStr	Community structure of fishes and macroinvertebrates and their relationships with selected habitat characteristics in tributaries of upper Sarawak Kiri River, Sarawak
title_full_unstemmed	Community structure of fishes and macroinvertebrates and their relationships with selected habitat characteristics in tributaries of upper Sarawak Kiri River, Sarawak
title_sort	community structure of fishes and macroinvertebrates and their relationships with selected habitat characteristics in tributaries of upper sarawak kiri river, sarawak
granting_institution	Universiti Malaysia Sarawak
granting_department	Institute of Biodiversity and Environmental Conservation
publishDate	2014
url	http://ir.unimas.my/id/eprint/9026/3/Angie%20anak%20Sapis%20ft.pdf
_version_	1811771561860923392

Community structure of fishes and macroinvertebrates and their relationships with selected habitat characteristics in tributaries of upper Sarawak Kiri River, Sarawak

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