Meiobenthos in estuary part of ha long bay (gulf of tonkin, south china sea, vietnam)

The nematode community distribution in two estuaries of the Me Kong delta: Cung Hau and Ham Luong, South Vietnam

“…In another study on nematode communities in the Thi Vai estuary by Doan Canh and Nguyen Vu Thanh (2000) [9], only 45 nematodes species belonging to 25 genera were found, however in an area which was impacted by industrial sewage water and located approximately 37 km north of the Me Kong river. The number of taxa in our study is also higher compared with a study in the north estuary of Vietnam by Pavlyuk et al (2008) [25], where 66 species belonging to 52 genera and 17 families were identified in Cua Luc estuary. The results are similar with the study by Soetaert et al (1995) [33], where in total 220 species belonging to 102 genera and 35 families of nematodes in five European estuaries were found.…”

“…The nematode densities of our study are comparable to the records of 67-1666 inds/10 cm 2 in the Westerschelde [32] 317-1002 inds/10 cm 2 in Shin River, Kasuga River and Tsumeta River in Takamatsu, Japan [35], 38.9 ± 5.3-1323.1 ± 398.5 inds/10cm² in Mondego and 109.0 ± 26.7 -2234.0 ± 400.2 inds/10cm² in Mira [1]; but lower than 100-7100 inds/ 10 cm² in the Oosterschelde [31]; 130-14500 inds/10 cm² across five European estuaries (Ems, Westerschelde, Somme, Gironde and Tagus) as reported by Soetaert et al (1995) [33]; 330-3200 inds/10cm² in Blyth estuary, UK [4], 15-5856 inds/10cm² in the Thames river [11]; but are higher compared to the study by Pavlyuk et al (2008) [25] in Cua Luc estuary, who recorded densities of 74-150 inds/10 cm². Based on the Levene's test it was shown that the assumption of Homogeneity of the variances of nematode density was not fulfilled, hence the non-parametric Kruskal-Wallis test was used.…”

“…This study found higher records on nematode genera compared with the study by Adão et al, (2008) [1] where 45 and 48 nematode genera were recorded belonging to 19 families in the Mondego and Mira estuaries, Portugal. Sphaerotheristus, Syringolaimus and Theristus; these were also the most common genera in the other intertidal estuarine mudflats systems as observed by Pavlyuk et al (2008) [25] in Cua Luc, north Vietnam and Quang et al (2010) [29] in the Me Kong delta. However, only a few similar dominant genera are observed in the other European systems [3,18,32,23,30] where the dominant common genera were found as Sabatieria, Metachromadora, Daptonema, Anoplostoma, Sphaerolaimus, and Terschellingia.…”

The distribution of Meiofauna community related to salinity gradient in the Ham Luong estuary, Mekong river

“…In Vietnam, the meiofauna density has been investigated in the Cua Luc (110.5 ± 28-295.5 ± 98.4 inds/10cm 2 ) [19] [28] and Bouwman (1981) (5 taxa) [6].…”

“…In Vietnam, meiofauna studies has been researched by Nguyen Vu Thanh & Nguyen Dinh Tu (2003) [18]; [15,16]; Nguyen Vu Thanh & Doan Canh (2005) [17]; Nguyen Dinh Tu (2009) [14]. In the South Vietnam, there were some remarkable publications about meiofauna distribution published by Doan & Nguyen (2000) [8], Pavlyuk et al (2008) [19] and Ngo et al (2010,2013) [20,21]. This paper focuses on meiofauna distribution following salinity gradient in the Ham Luong estuary.…”