Primary productivity and standing stock of the phytoplankton in the Hangzhou Bay to the Zhoushan Fishing Ground during autumn

LIU Zi-lin; NING Xiu-ren; CAI Yu-ming

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LIU Zi-lin, NING Xiu-ren, CAI Yu-ming. Primary productivity and standing stock of the phytoplankton in the Hangzhou Bay to the Zhoushan Fishing Ground during autumn[J]. Haiyang Xuebao, 2001, 23(2): 93-99.

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LIU Zi-lin, NING Xiu-ren, CAI Yu-ming. Primary productivity and standing stock of the phytoplankton in the Hangzhou Bay to the Zhoushan Fishing Ground during autumn[J]. Haiyang Xuebao, 2001, 23(2): 93-99.

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Primary productivity and standing stock of the phytoplankton in the Hangzhou Bay to the Zhoushan Fishing Ground during autumn

Second Institute of Oceanography, Key Leboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou 310012, China

Received Date: 1999-03-03
Rev Recd Date: 1999-06-07

Abstract

Abstract

The observations on the cell abundance,chlorophylla concentration and productivity of phy to plankton were carried out in the Hangzhou Bay and the Changjiang Estuary to the Zhoushan Fishing Ground during the autumn of 1995.The results show that the average cell abundance is (22.68×10⁴±63.33×10⁴) cell/dm³ in the surface water of the survey area; average chlorophylla is (2.80±3.46)μg/dm³ and primary productivity is (692.5±1192.4) mg/ (m²·d) (C).The size-fractionated chlorophylla shows that nanoplankton and picoplankton with cell being less than 20 μm account for 71%,and they contribut to total productivity for dominant position (68%).This provs the importance of nano- and picoplankton in phytoplankton community.The photosynthesis of phytoplankton is limited by light,as there is higher suspended particulate in the estuary.The correlation of the biological parameters with euphotic depth is significance in the survey area.The phytoplankton front is situated in the Changjiang Estuary dilution water where the euphotic depth is 10~20 m,salinity is 26~32.
- chlorophylla,
- productivity,
- phytoplankton,
- Hangzhou Bay,
- Zhoushan Fishing Ground

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References(10)

References

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