Natural and environmental characteristics of Tra Vinh coastal area, Mekong Delta Vietnam for the development of hard clam culture

Paper Details

Research Paper 01/08/2018
Views (421) Download (28)

Natural and environmental characteristics of Tra Vinh coastal area, Mekong Delta Vietnam for the development of hard clam culture

Ta Thi Kim Oanh, Nguyen Van Lap, Nguyen Thi Mong Lan, Ta Duy Thong, Vo Thi Hong Quyen
J. Bio. Env. Sci.13( 2), 58-67, August 2018.
Certificate: JBES 2018 [Generate Certificate]


Tra Vinh is a coastal province in the Mekong River Delta, Vietnam with about 65 km coastline located between the Co Chien and Bassac rivers and bordered to the south east by the East sea. In Tra Vinh coast, tidal flats occupy the widespread area along the coastline to -5 m water depth, consisting of mud and sand flats. On the mud flats, especially around the river mouths, extensive mangroves distribute and provide abundant food for aquatic species. These natural conditions are very favorable for the development of marine brackish water aquaculture especially hard clams Meretrix lyrata. Clam farming is considered a potential aquaculture and has contributed considerably to socio-economic development of the locality. However, the cultured area only accounts for about 20% of the total tidal flat area, the development is not commensurate with the potential and available advantages. In order to exploit effectively and reasonably potential of tidal flat and develop sustainably clam farming in Tra Vinh coastal area, it is necessary to study the natural and environmental characteristics for planning suitable culture areas. Combining methods of topography survey, boring cores and analysis of grain size, environmental factors in laboratory, main natural and eco-environmental factors affecting clam culture process are clarified. Morph-sedimentary of tidal flats, meteorological, marine hydrological and environmental characteristics of Tra Vinh coastal area are favorable for hard clam culture. Clam grounds in coastal tidal flat and river mouth bar are characterized by75- 90% fine sand, stable and flat topography slightly sloping towards the sea, mean 4 – 8 h/day exposure time in 2.5- 3m water depth corresponding to topography -1.5 to -2.6 m. Depending on geographical location of tidal flats, adverse factors would affect heavily to the clam grounds also are defined.


Dyer KR, Christie MC, Wright EW. 2000. The classification of mudflats. Continental Shelf Research 20, 1061-1078.

Gagliano SM, McIntire MG. 1968. Report onthe Mekong Delta: Louisiana University Coastal Studies Institute Technical Report 57, 143 p.

Le HT, Nguyen TML, Ta TKO. 2012. Depositional environment characteristics and coastline changes in Tra Vinh coastal area, Mekong river delta. Vietnam Journal of Earth Sciences 3(34), 350-358.

Mason OK. 1993. The geoarchaeology of beachridges and cheniers: Studies of coastal evolution using archaeological data: Journal of Coastal Research 9, 126–146 p.

Nguyen TA, Nguyen VL. 1994. Research on marine resources and natural conditions for planning and rational use of coastal waterways in Tra Vinh province, 88-101. Scientific Report of Department of Science and Technology, Department of Fisheries.

Nguyen TML. 2017. Study on changes in coastline of Tra Vinh province from 1966 to present and propose solutions to limit erosion. Scientific Report of HCMC Institute of Resources Geography.

Nguyen TT. 2010. Study on the model of protection and development of clam resources Meretrix lyrata (Sowerby, 1851), cockle Andara granosa (Linaeus, 1758) in Tien Giang, Ben Tre, Tra Vinh estuarine coastal areas. Scientific Report, Department of Science and Technology 197 pages.

Nguyen VL, Ta TKO, Tateishi M. 2000: Late Holocene depositional environments and coastal evolution of the Mekong River Delta, Southern Vietnam, Journal of Asian Earth Sciences 18, p.427 – 439.

People’s Committee of TraVinh Province. 2007. Land use plan for tidal flats. Development of coastal aquaculture in Duyen Hai, Cau Ngang and Chau Thanh districts, Tra Vinh province to 2010 and toward 2020”, 119 pages.

Ta TKO, Nguyen VL, Tateishi M, Kobayashi I, Saito Y. 2002.Holocene delta evolution and sediment discharge of the Mekong River, southern Vietnam. Quaternary Science Reviews 21, p. 1807–1819.

Ta TKO, Nguyen VL, Nguyen TML, Huynh TTT, Pham CL. 2012. Overall assessment on natural, environmental conditions for mollusk exploitation and aquaculture (Meretrixlyrata, Anadara granosa) to develop economy of coastal areas of TraVinh province. Scientific Report of HCMC Institute of Resources Geography.

Ta TKO, Nguyen VL, Huynh TTT, Nguyen TML, Pham CL. 2012. Beach-ridge system in Duyen Hai district, Tra Vinh province and Holocene evolution of Mekong river delta. Vietnam Journal of Earth Sciences 3(34), 335-340.

Ta TKO, Nguyen VL, Nguyen TML. 2018. Study on hard clam (Meretrix lyrata) seed nursing model in the coastal area of Tra Vinh province, Mekong Delta, Vietnam. Journal of Biodiversity and Environmental Sciences 12(6), 11-20.

Tamura T, Saito S, Bateman MD, Nguyen VL, Ta TKO, Matsumoto D. 2012. Luminescence dating of beach ridges for characterizing multi-decadal to centennial deltaic shoreline changes  during Late Holocene, Mekong River delta. Marine Geology 326–328, 140–153.

Tran HP. 2007. Potential – Current situation and solutions for culturing export clam, cockles in Tra Vinh. In Proceedings of the 5th National Mollusk Conference 399-402.