A study on phytoplankton in the Prydz Bay and its adjacent sea area,Antarctica during the austral summer of 2000

ZHU Gen-hai; NING Xiu-ren; LIU Zhi-lin; CAI Yu-ming; LIU Cheng-gang; PAN Jian-ming

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ZHU Gen-hai, NING Xiu-ren, LIU Zhi-lin, CAI Yu-ming, LIU Cheng-gang, PAN Jian-ming. A study on phytoplankton in the Prydz Bay and its adjacent sea area,Antarctica during the austral summer of 2000[J]. Haiyang Xuebao, 2006, 28(1): 118-126.

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A study on phytoplankton in the Prydz Bay and its adjacent sea area,Antarctica during the austral summer of 2000

1.
Key Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, China;Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
2.
Key Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, China;Key Laboratory of Ocean Dynamic Processes and Satellite Oceanography, State Oceanic Administration, Hangzhou 310012, China;Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

Received Date: 2004-03-20
Rev Recd Date: 2005-06-23

Abstract

Abstract

A cell abundance, a species composit ion of phy to plankt on, a chlorophyll a concentration, and the relations with environmental parameters were studied in the Prydz Bay and its adjacent sea area, Antarctica ( 62°~ 70°S, 69°~77°E) during the austral summer of 2000. A total of 65 taxa, belonging to 33 genera and 4 phyla of phytoplankt on in the study sea area were identified. The average cell density of phytoplankt on was 32.67 10³ind./dm³, of which, Nitzschia curta was predominant and accounting for 24.80%.The high abundance of phytoplankt on and chlorophylla occurred in the Prydz Bay and the adjacent continental shelf where the average cell density was 88.74 10³ind./dm³. The low abundance occur red in the continental slope and deeper open sea area, and the cell abundance was 21.42 10³ and 10.26 10³ind./dm³,respectively. The vertical distribution of phytoplankt on was the highest in the water column 0~50 m, but the low abundance occurred below 100m. The species composition and cell abundance of phytoplankt on were influenced by water masses stability and seasonalice. The phytoplankt on abundance varied with time, high by day than at night, and the highest abundance occurred at 13:00 pm. The correlations of cell density with water temperature and dissolved oxygen were positive, while those of it withinorg anic phosphate and inorganic nitrogen concentrations were negative.
- phytoplankt on,
- chlorophylla,
- diel variation,
- Prydz Bay,
- Antarctica

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References(42)

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