Study on the abundance and biomass of meiofauna in the south Mid-Atlantic Ridge

WANG Xiao-bo; WANG Chun-sheng; LIN Shi-quan

doi:10.3969/j.issn.1001-909X.2018.01.011

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Journal of Marine Sciences ›› 2018, Vol. 36 ›› Issue (1) : 102-106. DOI: 10.3969/j.issn.1001-909X.2018.01.011

Study on the abundance and biomass of meiofauna in the south Mid-Atlantic Ridge

WANG Xiao-bo^1,2, WANG Chun-sheng^1,2, LIN Shi-quan^1,2

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Abstract

A study was carried out by “Dayang Yihao” from May 25 to June 17,2011. The meiofauna samples were collected from 7 stations in the south Mid-Atlantic Ridge. The results showed that 10 benthic groups were founded from the surveyed area. The average abundance and biomass of meiofauna were (60.63±54.77) ind/10 cm² and (9.42±8.92) μg/10 cm², respectively. Nematodes were present the great abundance (47.42±47.99) ind/10 cm²,accounting for 78.21% of total abundance of meiofauna in study area. Besides,Sarcomastigophora and Copepod were also found to be the dominant taxa, constituting 16.63% and 3.91% of total abundance of meiofauna,respectively. Copepod had the most biomass in the 10 benthic groups,followed by Nematoda and Sarcomastigophora. The analysis of vertical distribution has shown that the abundance of meiofauna decreased with the depth in the sediment. About 73.55% of meiofauna live in the top 0-2 cm layer. In terms of body size,the range of 32-125 μm accounted for 75.32% of meiofauna.

Key words

meiofauna / meiobenthic abundance / biomass / the south Mid-Atlantic Ridge

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WANG Xiao-bo, WANG Chun-sheng, LIN Shi-quan. Study on the abundance and biomass of meiofauna in the south Mid-Atlantic Ridge[J]. Journal of Marine Sciences. 2018, 36(1): 102-106 https://doi.org/10.3969/j.issn.1001-909X.2018.01.011

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