Demersal fish assemblages off Kedah and Penang waters : an exploratory analysis of the impacts of the 26 December 2004 tsunami on fisheries resources

Len R.G., . and Abu Talib Ahmad, . and Nurulhuda Ahmad Fatan, . (2005) Demersal fish assemblages off Kedah and Penang waters : an exploratory analysis of the impacts of the 26 December 2004 tsunami on fisheries resources. [Proceedings Paper]

This paper provides the results of the assemblages structure analysis of demersal fish resources in the coastal waters off Kedah and Penang Malaysia. Multivariate techniques classification and ordination analysis were used to analyzed scientific trawl survey data to evaluate demersal fish assemblage structure and determine the possible effects of the 26 December 2004 tsunami on the fisheris resources. Results indicate that spatial patterns of demersal fish assemblages were influenced by depth with two assemblages groups i.e. shallow and deep delineated at about 35m in Penang waters and about 20-30m off Kedah. Depth significantly influenced the assemblage groups in Penang but not Kedah. However the assemblages delineations were consistent between the pre- and post- tsunami surveys in both areas. In terms of species compositions differences in the major species were observed between shallow and deep assemblage groups but the dominant species in the same assemblage group during the pre and post tsunami showed similar patterns. Moreover the relative density of species/taxa associated with the shallow assemblage was higher than that associated with the shallow assemblage group in Penang waters. For Kedah the deep assemblage showed a relatively higher density than the shallow assemblage group.

Full text available from:

Abstract

This paper provides the results of the assemblages structure analysis of demersal fish resources in the coastal waters off Kedah and Penang Malaysia. Multivariate techniques classification and ordination analysis were used to analyzed scientific trawl survey data to evaluate demersal fish assemblage structure and determine the possible effects of the 26 December 2004 tsunami on the fisheris resources. Results indicate that spatial patterns of demersal fish assemblages were influenced by depth with two assemblages groups i.e. shallow and deep delineated at about 35m in Penang waters and about 20-30m off Kedah. Depth significantly influenced the assemblage groups in Penang but not Kedah. However the assemblages delineations were consistent between the pre- and post- tsunami surveys in both areas. In terms of species compositions differences in the major species were observed between shallow and deep assemblage groups but the dominant species in the same assemblage group during the pre and post tsunami showed similar patterns. Moreover the relative density of species/taxa associated with the shallow assemblage was higher than that associated with the shallow assemblage group in Penang waters. For Kedah the deep assemblage showed a relatively higher density than the shallow assemblage group.

[error in script]

Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. mal GC219 S471 2005 Call Number
AGROVOC Term:	DEMERSAL FISHERIES
AGROVOC Term:	WATER
AGROVOC Term:	COASTAL WATERS
AGROVOC Term:	TSUNAMIS
AGROVOC Term:	IMPACT ASSESSMENT
AGROVOC Term:	FISHERY RESOURCES
AGROVOC Term:	MALAYSIA
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:13
URI:	http://webagris.upm.edu.my/id/eprint/10914

Actions (login required)

View Item