Changes in abundance and diversity of selected macrobenthic species in the carpet clam grounds in Kedah waters

Samsudin Basir, . and Abdul Haris Hilmi Ahmad Arshad, . and Mohd. Faisal Salleh, . (2005) Changes in abundance and diversity of selected macrobenthic species in the carpet clam grounds in Kedah waters. [Proceedings Paper]

Carpet clam fishing activities have long been practised by coastal fishers in Kedah. Based on the findings from previous studies the dredging activities have caused severe physical and biological disturbances to the seabed structure and benthic communities. Changes in diversity and abundance of selected benthic organism were used to determine the impact of the tsunami on the carpet clam fishing grounds. Data from the surveys of 2003 and 2005 in the same fishing grounds were analyzed. The mean Shanon-Weaver diversity indices of selected species from the 2005 survey were between 0.5240.089 and in 2003 at 0.3960.178. Trachycadium subrugosum Terebra babylonia and Macoma sp. increased and dominated the macrobenthic communities. The species diversity in area A and area B between 2003 and 2005 remained the same. Only physical and biological disturbances on the benthic habitats by commercial dredging were obvious. Any possible impact from the tsunami on the macrobenthic communities in the carpet clam grounds would be from the physical disturbance of the seabed structure and this has yet to be comprehensively studied.

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Abstract

Carpet clam fishing activities have long been practised by coastal fishers in Kedah. Based on the findings from previous studies the dredging activities have caused severe physical and biological disturbances to the seabed structure and benthic communities. Changes in diversity and abundance of selected benthic organism were used to determine the impact of the tsunami on the carpet clam fishing grounds. Data from the surveys of 2003 and 2005 in the same fishing grounds were analyzed. The mean Shanon-Weaver diversity indices of selected species from the 2005 survey were between 0.5240.089 and in 2003 at 0.3960.178. Trachycadium subrugosum Terebra babylonia and Macoma sp. increased and dominated the macrobenthic communities. The species diversity in area A and area B between 2003 and 2005 remained the same. Only physical and biological disturbances on the benthic habitats by commercial dredging were obvious. Any possible impact from the tsunami on the macrobenthic communities in the carpet clam grounds would be from the physical disturbance of the seabed structure and this has yet to be comprehensively studied.

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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:	AQUATIC COMMUNITIES
AGROVOC Term:	BENTHIC ENVIRONMENT
AGROVOC Term:	SPECIES
AGROVOC Term:	FISHERIES
AGROVOC Term:	COASTAL FISHERIES
AGROVOC Term:	COASTAL WATERS
AGROVOC Term:	FISHERY DATA
AGROVOC Term:	TSUNAMIS
AGROVOC Term:	IMPACT ASSESSMENT
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/10929

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