RESPOND OF MEIOBENTHOS COMMUNITIES’ DISTRIBUTION PATTERNS BY ESTUARINE GRADIENTS IN CUNG HAU ESTUARY, MEKONG DELTA.

Nguyen Van Sinh, Nguyen Thi Kim Phuong, Ngo Xuan Quang

Abstract


I The meiobenthos community in the Cung Hau estuary, Mekong
river, were investigated in dry season 2009. The results showed that they
consist of 18 taxa. Their meiobenthos density was recorded from 259±126
to 1375±609 inds.10cm
−2. Nematode was the most dominant taxa, represented
76.4% in the total. Other subdominant taxa were copepoda,
turbellaria and sarcomastigophora. Meiobenthos density was found high
value at inland and marine stations according to diversity indices such as
S. H’, d and N1, N2, Ninf while they showed lower at middle estuary
stations. The biological diversity indices were higher in the middle part
comparing to the remaining stations

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