Distribution and source of transparent exopolymer particles in the northern Bering Sea

MA Lili; CHEN Min; GUO Laodong; LIN Feng; TONG Jinlu

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MA Lili, CHEN Min, GUO Laodong, LIN Feng, TONG Jinlu. Distribution and source of transparent exopolymer particles in the northern Bering Sea[J]. Haiyang Xuebao, 2012, 34(5): 81-90.

Citation:

MA Lili, CHEN Min, GUO Laodong, LIN Feng, TONG Jinlu. Distribution and source of transparent exopolymer particles in the northern Bering Sea[J]. Haiyang Xuebao, 2012, 34(5): 81-90.

MA Lili, CHEN Min, GUO Laodong, LIN Feng, TONG Jinlu. Distribution and source of transparent exopolymer particles in the northern Bering Sea[J]. Haiyang Xuebao, 2012, 34(5): 81-90.

Citation:

MA Lili, CHEN Min, GUO Laodong, LIN Feng, TONG Jinlu. Distribution and source of transparent exopolymer particles in the northern Bering Sea[J]. Haiyang Xuebao, 2012, 34(5): 81-90.

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Distribution and source of transparent exopolymer particles in the northern Bering Sea

1.
Department of Oceanography, Xiamen University, Xiamen 361005, China
2.
Department of Oceanography, Xiamen University, Xiamen 361005, China;Department of Marine Science, University of Southern Mississippi, Stennis Space Center, MS 39529, USA

Received Date: 2011-10-24
Rev Recd Date: 2012-05-09

Abstract

Abstract

Transparent exopolymer particles (TEP) are large, sticky particles in marine environments, and play a significant role in particle dynamics, carbon export, food web energy transfer and scavenging of trace metals. Samples were collected from the northern Bering Sea during summer 2010 for measurements of TEP and other hydrographic parameters to examine the abundance, distributions and sources of TEP. Our results showed that TEP concentrations ranged from 34 to 628 mg/m³(Xeq). The averaged TEP concentrations in the shelf, slope and basin were 240, 145 and 83 mg/m³(Xeq), respectively, showing a general decrease from the shelf to the basin. In the slope and basin areas, TEP concentrations decreased with the increasing depth. However, high concentrations of TEP were observed in the shelf bottom waters, coincided with the high values of TSM and POC. The correlations between TEP and fluorescence, TSM and POC suggested two sources of TEP in the northern Bering Sea: (1) in situ production from planktons in the upper water column, and (2) benthic biological processes in the sediments. High TEP concentrations in the shelf bottom waters was predominantly derived from sediment resuspension, which may have a potential effect on carbon biogeochemical cycle and scavenging of trace elements in shelf regions.
- the northern Bering Sea,
- transparent exopolymer particles (TEP),
- POC, distribution,
- sources,

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References(38)

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