2000年夏季南极普里兹湾及邻近海域浮游植物研究

朱根海; 宁修仁; 刘子琳; 蔡昱明; 刘诚刚; 潘建明

2000年夏季南极普里兹湾及邻近海域浮游植物研究

1.
国家海洋局海洋生态系统与生物地球化学重点实验室, 浙江杭州 310012;国家海洋局第二海洋研究所, 浙江杭州 310012
2.
国家海洋局海洋生态系统与生物地球化学重点实验室, 浙江杭州 310012;国家海洋局海洋动力过程与卫星海洋学重点实验室, 浙江杭州 310012;国家海洋局第二海洋研究所, 浙江杭州 310012

基金项目: 国家自然科学基金(49876032,39000021);科研院所基础性工作专项资金重点项目(2002DEA30027-5)

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出版历程
- 收稿日期: 2004-03-20
- 修回日期: 2005-06-23

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

摘要

摘要: 报道了2000年夏季(1月)在62°~69°S,70°30'~75°30'E的南极普里兹湾邻近海域浮游植物种类组成、丰度分布、叶绿素a浓度及其环境调控.结果表明,调查海区共有浮游植物4门33属65种、变种和变型.浮游植物平均细胞丰度为32.67×103个/dm³.浮游植物细胞丰度和叶绿素a浓度高值均出现在水体较稳定的近岸海湾和冰间湖及毗邻陆架,在大陆坡和深海区它们的值明显减小.浮游植物细胞丰度和叶绿素a浓度在0~50m水层最大,100m以下水层随深度的增加而减小.浮游植物丰度呈昼夜变化,在13:00丰度最高.浮游植物优势种为短菱形藻(Nitzschiacurta),占总丰度的24.8%.浮游植物种类组成和细胞丰度与浮冰和水团稳定性有关.经回归分析,浮游植物细胞丰度与水温、溶解氧成显著正相关,与无机磷(PO_{43--P)和无机氮(NO₃^--N)成显著负相关.}
- 浮游植物 /
- 叶绿素a /
- 昼夜变化 /
- 普里兹湾 /
- 南极
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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