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热带海洋学报 ›› 2010, Vol. 29 ›› Issue (6): 46-50.doi: 10.11978/j.issn.1009-5470.2010.06.046cstr: 32234.14.j.issn.1009-5470.2010.06.046

• 海洋生物学 • 上一篇    下一篇

广东大亚湾中肋骨条藻种群动态及其与环境因子的相关性分析

孙大伟1, 欧林坚1, 齐雨藻1,2, 陈菊芳1   

  1. 1. 暨南大学赤潮与水环境研究中心, 广东 广州 510632; 2. 华南师范大学生命学院, 广东 广州 510631
  • 收稿日期:2010-07-14 修回日期:2010-09-19 出版日期:2010-12-15 发布日期:2010-12-15
  • 通讯作者: 齐雨藻。
  • 作者简介:孙大伟(1984—), 男, 江苏省徐州市人, 硕士研究生, 主要从事水环境生物学与赤潮防治研究。E-mail: davie828@126.com
  • 基金资助:

    国家重点基础研究发展计划项目(2010CB428702); 国家自然科学基金项目(39790110, 40806058)

Dynamics of Skeletonema costatum population and its relationship with environ-mental factors at the Daya Bay, Guangdong Province

SUN Da-wei1, OU Lin-jian1, QI Yu-zao1,2, CHEN Ju-fang1   

  1. 1. Research Center for Harmful Algae and Aquatic Environment, Jinan University, Guangzhou 510632, China; 2. College of Life Science, South China Normal University, Guangzhou 510631, China
  • Received:2010-07-14 Revised:2010-09-19 Online:2010-12-15 Published:2010-12-15
  • Contact: 齐雨藻。
  • About author:孙大伟(1984—), 男, 江苏省徐州市人, 硕士研究生, 主要从事水环境生物学与赤潮防治研究。E-mail: davie828@126.com
  • Supported by:

    国家重点基础研究发展计划项目(2010CB428702); 国家自然科学基金项目(39790110, 40806058)

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被引次数

5 | 1

摘要：

对广东大亚湾海域1997年7月至1998年6月期间中肋骨条藻Skeletonema costatum种群动态及其与环境因子之间的关系进行研究。结果表明, 中肋骨条藻在该海湾全年出现, 有春季与秋季两个藻细胞密度高峰期, 其中秋季时的藻密度最大。1998年4—6月密集采样期间, 各站位中肋骨条藻种群数量变动基本上呈现出表层密度高于底层的趋势, 各站位间的数量变动具有一定的空间差异, 呈现出养殖区、生活区等近岸海域藻细胞密度高于远岸海域的趋势。中肋骨条藻高频率、高密度出现的温度范围为25—26℃, 盐度范围为30.6‰—31.6‰, 溶解性无机氮 (dissolved inorganic nitrogen, DIN)、可溶性无机磷 (dissolved inorganic phosphorus, DIP)和SiO32?-Si范围分别为9.2—78.3、3.7—5.9和564.0—1054.6µg•L?1。相关性分析表明, 影响大亚湾海域中肋骨条藻种群数量的主要环境因子有SiO32?-Si、DIN、化学需氧量 (chemical oxygen demand, COD)和氮磷比值, 同时水温、溶解氧 (dissolved oxygen, DO)也在一定程度上影响着中肋骨条藻的种群动态。

关键词: 广东大亚湾, 中肋骨条藻, 环境因子, 相关性分析

Abstract:

Population dynamics of Skeletonema costatum from July 1997 to June 1998 at the Daya Bay, Guangdong Province was investigated. The influence of environmental factors on the temporal and spatial distribution of S. costatum was also ana-lyzed. Results showed that S. costatum existed all year round with two cell density peaks in spring and autumn (cell density in autumn was higher than that in spring). In general, cell density of S. costatum in the surface water was higher than that in the bottom water at the Daya Bay. Cell density varied spatially among the sampling stations, showing a trend that cell density in the near-shore aquaculture area and living area was higher than that in the off-shore area from April to June of 1998. The en-vironmental conditions for high-frequency and high-density S. costatum were temperature 25.0?26.0℃, salinity 30.6‰?  31.6‰, DIN (dissolved inorganic nitrogen) 9.2?78.3µg•L?1, DIP (dissolved inorganic phosphorus) 3.7?5.9µg•L?1, and  SiO32?-Si 564.0?1054.6µg•L?1. Correlation analysis indicated that SiO32?-Si, DIN, COD (chemical oxygen demand), and ratio of N to P were the major environmental factors controlling the cell density of S. costatum. In addition, temperature and DO(dissolved oxygen) also affected the growth of S. costatum to some extent.

Key words: Daya Bay, Guangdong Province, Skeletonema costatum, environmental factors, correlation analysis