Taxonomy, species composition and ecology of seaweed plus preliminary molecular assessment of Caulerpa spp. in Satang and Sampadi Island, Sarawak

This study incorporates morphological and molecular approaches to determine the seaweed species in Satang Besar Island and Sampadi Island, Sarawak. Selected physico-chemical parameters namely temperature, salinity, pH, dissolved oxygen (DO) and turbidity were also measured during the study. Results...

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Main Author:	Farah Adibah, Esa
Format:	Thesis
Language:	English
Published:	2014
Subjects:	SH Aquaculture Fisheries Angling
Online Access:	http://ir.unimas.my/id/eprint/8357/1/Farah.pdf
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id	my-unimas-ir.8357
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spelling	my-unimas-ir.83572023-03-27T03:05:23Z Taxonomy, species composition and ecology of seaweed plus preliminary molecular assessment of Caulerpa spp. in Satang and Sampadi Island, Sarawak 2014 Farah Adibah, Esa SH Aquaculture. Fisheries. Angling This study incorporates morphological and molecular approaches to determine the seaweed species in Satang Besar Island and Sampadi Island, Sarawak. Selected physico-chemical parameters namely temperature, salinity, pH, dissolved oxygen (DO) and turbidity were also measured during the study. Results revealed that there were 17 species of seaweeds (9 families, 11 genera) at Satang Besar Island and 14 species (9 families, 10 genera) at Sampadi Island. There were nine common species at both locations namely Avrainvillea erecta, Cladophoropsis membranacea, Dictyota dichotoma, D. bartayresii, Padina boryana, P. tetrasomatica, Colpomenia sinuosa, Sargassum polycystum and Laurencia majuscula. For both islands, P. tetrasomatica and C. sinuosa were among the most abundant species in terms of percentage cover, frequency and density. Cladophoropsis membranacea and Neomeris van-bosseae were the least representatives species found in Satang Besar Island and Sampadi Island. Bray-Curtis similarity analysis showed that species composition clustered according to habitat preferences. Pearson-correlation showed that salinity moderately correlated with species diversity (r = -0.610; p = 0.000) and evenness (r = -0.603; p = 0.000) in Satang Besar Island, whereas species diversity and species evenness showed a weak negative correlation with turbidity in Sampadi Island (H’: r = -0.428; p = 0.037; J’: r = -0.525; p = 0.008). In this study, approximately 600 bp ITS gene had been successfully amplified from Caulerpa. The data matched with C. serrulata (AY206423.1) and therefore supports the identification using morphological 2 characteristics. Based on phylogenetic tree, Caulerpa showed monophyletic grouping within the division of Chlorophyta. Universiti Malaysia Sarawak, (UNIMAS) 2014 Thesis http://ir.unimas.my/id/eprint/8357/ http://ir.unimas.my/id/eprint/8357/1/Farah.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	SH Aquaculture Fisheries Angling
spellingShingle	SH Aquaculture Fisheries Angling Farah Adibah, Esa Taxonomy, species composition and ecology of seaweed plus preliminary molecular assessment of Caulerpa spp. in Satang and Sampadi Island, Sarawak
description	This study incorporates morphological and molecular approaches to determine the seaweed species in Satang Besar Island and Sampadi Island, Sarawak. Selected physico-chemical parameters namely temperature, salinity, pH, dissolved oxygen (DO) and turbidity were also measured during the study. Results revealed that there were 17 species of seaweeds (9 families, 11 genera) at Satang Besar Island and 14 species (9 families, 10 genera) at Sampadi Island. There were nine common species at both locations namely Avrainvillea erecta, Cladophoropsis membranacea, Dictyota dichotoma, D. bartayresii, Padina boryana, P. tetrasomatica, Colpomenia sinuosa, Sargassum polycystum and Laurencia majuscula. For both islands, P. tetrasomatica and C. sinuosa were among the most abundant species in terms of percentage cover, frequency and density. Cladophoropsis membranacea and Neomeris van-bosseae were the least representatives species found in Satang Besar Island and Sampadi Island. Bray-Curtis similarity analysis showed that species composition clustered according to habitat preferences. Pearson-correlation showed that salinity moderately correlated with species diversity (r = -0.610; p = 0.000) and evenness (r = -0.603; p = 0.000) in Satang Besar Island, whereas species diversity and species evenness showed a weak negative correlation with turbidity in Sampadi Island (H’: r = -0.428; p = 0.037; J’: r = -0.525; p = 0.008). In this study, approximately 600 bp ITS gene had been successfully amplified from Caulerpa. The data matched with C. serrulata (AY206423.1) and therefore supports the identification using morphological 2 characteristics. Based on phylogenetic tree, Caulerpa showed monophyletic grouping within the division of Chlorophyta.
format	Thesis
qualification_level	Master's degree
author	Farah Adibah, Esa
author_facet	Farah Adibah, Esa
author_sort	Farah Adibah, Esa
title	Taxonomy, species composition and ecology of seaweed plus preliminary molecular assessment of Caulerpa spp. in Satang and Sampadi Island, Sarawak
title_short	Taxonomy, species composition and ecology of seaweed plus preliminary molecular assessment of Caulerpa spp. in Satang and Sampadi Island, Sarawak
title_full	Taxonomy, species composition and ecology of seaweed plus preliminary molecular assessment of Caulerpa spp. in Satang and Sampadi Island, Sarawak
title_fullStr	Taxonomy, species composition and ecology of seaweed plus preliminary molecular assessment of Caulerpa spp. in Satang and Sampadi Island, Sarawak
title_full_unstemmed	Taxonomy, species composition and ecology of seaweed plus preliminary molecular assessment of Caulerpa spp. in Satang and Sampadi Island, Sarawak
title_sort	taxonomy, species composition and ecology of seaweed plus preliminary molecular assessment of caulerpa spp. in satang and sampadi island, sarawak
granting_institution	Universiti Malaysia Sarawak, (UNIMAS)
granting_department	Faculty of Resource Science and Technology.
publishDate	2014
url	http://ir.unimas.my/id/eprint/8357/1/Farah.pdf
_version_	1783727988154564608

Taxonomy, species composition and ecology of seaweed plus preliminary molecular assessment of Caulerpa spp. in Satang and Sampadi Island, Sarawak

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