Spatial distribution and season variation of meiobenthos community in the Liaohe Estuary

Ye Sheng; Kong Fei; Li Hongjun; Liu Min; Li Hongbo; Shao Kuishuang; Fan Jingfeng; Guo Hao

doi:10.3969/j.issn.0253-4193.2017.10.007

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Ye Sheng, Kong Fei, Li Hongjun, Liu Min, Li Hongbo, Shao Kuishuang, Fan Jingfeng, Guo Hao. Spatial distribution and season variation of meiobenthos community in the Liaohe Estuary[J]. Haiyang Xuebao, 2017, 39(10): 78-89. doi: 10.3969/j.issn.0253-4193.2017.10.007

Citation:

Ye Sheng, Kong Fei, Li Hongjun, Liu Min, Li Hongbo, Shao Kuishuang, Fan Jingfeng, Guo Hao. Spatial distribution and season variation of meiobenthos community in the Liaohe Estuary[J]. Haiyang Xuebao, 2017, 39(10): 78-89. doi: 10.3969/j.issn.0253-4193.2017.10.007

Citation:

Ye Sheng, Kong Fei, Li Hongjun, Liu Min, Li Hongbo, Shao Kuishuang, Fan Jingfeng, Guo Hao. Spatial distribution and season variation of meiobenthos community in the Liaohe Estuary[J]. Haiyang Xuebao, 2017, 39(10): 78-89. doi: 10.3969/j.issn.0253-4193.2017.10.007

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Spatial distribution and season variation of meiobenthos community in the Liaohe Estuary

doi: 10.3969/j.issn.0253-4193.2017.10.007

1.
Key Laboratory for Ecological Environment in Coastal Areas, National Marine Environmental Monitoring Center, State Oceanic Administration, Dalian 116023, China;College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
2.
Liaoning Marine Environmental Forecasting and Disaster Prevention and Mitigation Center, Shenyang 110001, China
3.
Key Laboratory for Ecological Environment in Coastal Areas, National Marine Environmental Monitoring Center, State Oceanic Administration, Dalian 116023, China

Received Date: 2017-01-12
Rev Recd Date: 2017-04-25

Abstract

Abstract

The benthic meiofauna was quantitatively investigated in the Liaohe Estuary in August (summer) in 2013, October (autumn) in 2013 and May (spring) in 2014, and its spatial distribution and season variation were studied. The mean abundance of the meiofauna in summer, autumn and spring was (264±83) ind/(10 cm²), (216±85) ind/(10 cm²) and (227±67) ind/(10 cm²), respectively, and the mean biomass was (272±125) μg/(10 cm²), (207±89) μg/(10 cm²) and (244±103) μg/(10 cm²), respectively. Compared with other studied areas, the abundance and biomass of meiofauna in Liaohe Estuary were at a low level. A total of 14 meiofauna groups were identified. Free-living marine nematodes were the most dominant group in abundance, with the dominance of 94%, 92.5% and 90.8% in summer, autumn and spring, respectively, followed by polychaetes, benthic copepods and bivalves. In terms of biomass, the dominant groups were polychaetes (41.1%-44.0%), nematodes (33.8%-36.5%) and bivalves (2.6%-6.7%). The study of horizontal distribution showed that the abundance and biomass of the benthic meiofauna in inshore water were generally lower than those in offshore water, except autumn. The study of vertical distribution showed that 95.9% of the meiofauna distributed in the top 0-5 cm sediment. The abundance and biomass of the benthic meiofauna both reached their peak in summer. The correlation analysis indicated that the abundance of meiobenthos high significantly correlated with depth and salinity (P<0.01), and significantly correlated with Chl a(P<0.05).
- meiobenthos,
- Liaohe Estuary,
- community structure,
- abundance,
- biomass,
- environment variation

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