Abundances of three pico-planktonic particles and their optical scattering in the Philippine Sea

WEI Jian-wei; SHI Xue-fa; FANG Xi-sheng; YANG Gang; CHENG Zhen-bo

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WEI Jian-wei, SHI Xue-fa, FANG Xi-sheng, YANG Gang, CHENG Zhen-bo. Abundances of three pico-planktonic particles and their optical scattering in the Philippine Sea[J]. Haiyang Xuebao, 2008, 30(1): 105-112.

Citation:

WEI Jian-wei, SHI Xue-fa, FANG Xi-sheng, YANG Gang, CHENG Zhen-bo. Abundances of three pico-planktonic particles and their optical scattering in the Philippine Sea[J]. Haiyang Xuebao, 2008, 30(1): 105-112.

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Abundances of three pico-planktonic particles and their optical scattering in the Philippine Sea

1.
First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
2.
First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Key Lab of Marine Sedimentology and Environmental Geology, State Oceanic Administration, Qingdao 266061, China

Received Date: 2006-07-26
Rev Recd Date: 2007-01-12

Abstract

Abstract

The pico-planktonic particles and optical beam attenuation profiles were sampled for the upper water columns of the Philippine Sea in autumn 2004.Three typical species, Prochlorococcus, Synechococcus and autotrophic eukaryotes were determined by flow cytometry techniques, and their abundances and optical scattering properties were subsequently examined.Results indicate that Prochlor ococcus is one most abundant population, then the Synechococcus, and the abundance of autotrophic eukaryotes is relatively lowest.The bulk optical scattering coefficients of three particles correlate with the beam attenuation coefficients of the water column.Among these three populations, the autotrophic eukaryotes and Prochlorococcus are the most significant contributors to the beam c_p(2.2% and 2.6%, respectively) via scattering, and only 0.3% can be attributed to Synechococcus.Only 5.1% of beam c_p can be accounted for by the bulk scattering of three particles.
- scattering coefficient,
- beam attenuation,
- phytoplankton,
- Philippine Sea,
- bio-optics

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