热带海洋学报 ›› 2011, Vol. 30 ›› Issue (1): 96-100.doi: 10.11978/j.issn.1009-5470.2011.01.096cstr: 32234.14.j.issn.1009-5470.2011.01.096

• 海洋生物学 • 上一篇    下一篇

大鹏湾浮游细菌时空分布与环境因子的关系

姜发军1,2, 胡章立3, 胡超群1   

  1. 1. 中国科学院南海海洋研究所, 广东 广州 510301; 2. 广西科学院, 广西 南宁 530007; 3. 深圳大学生命科学学院, 广东 深圳 518060
  • 收稿日期:2009-06-17 修回日期:2010-06-21 出版日期:2011-03-17 发布日期:2011-03-16
  • 通讯作者: 胡章立。E-mail: huzl@szu.edu.cn
  • 作者简介:姜发军(1976—), 男, 湖南省邵阳市人, 博士, 主要从事海洋环境生态研究。E-mail: hunanjfj@126.com
  • 基金资助:

    国家自然科学基金(30770340, 31070323);“水污染控制与治理”重大科技专项(2009ZX07423-003, 2009ZX07101-
    011-03)

Correlation between spatial-temporal distribution of bacterioplankton and environmental factors in the Dapeng Bay

JIANG Fa-jun1,2, HU Zhang-li3, HU Chao-qun1   

  1. 1. South China Sea Institute of Oceanology, CAS, Guangzhou 510301, China; 2. Guangxi Academy of Sciences, Nanning 530007, China; 3. College of Life Sciences, Shenzhen University, Shenzhen 518060, China
  • Received:2009-06-17 Revised:2010-06-21 Online:2011-03-17 Published:2011-03-16
  • Contact: 胡章立。E-mail: huzl@szu.edu.cn
  • About author:姜发军(1976—), 男, 湖南省邵阳市人, 博士, 主要从事海洋环境生态研究。E-mail: hunanjfj@126.com
  • Supported by:

    国家自然科学基金(30770340, 31070323);“水污染控制与治理”重大科技专项(2009ZX07423-003, 2009ZX07101-
    011-03)

摘要:

应用荧光显微镜计数法, 研究了大鹏湾海域细菌丰度时空分布特征, 探讨了其与温度、溶解氧、叶绿素a、氨盐、硝酸盐和磷酸盐之间的关系。结果表明, 大鹏湾全年细菌丰度介于1.40×108―24.43×108个•L?1之间。各季节细菌丰度高低依次为: 夏季、春季、秋季、冬季。浮游细菌的水平分布呈现近岸较高、离岸逐渐减少, 自大鹏湾西部湾顶向东部湾口逐渐减少的特征。除了夏季, 温度与浮游细菌呈显著正相关(P<0.05), 是浮游细菌的主要 控制因子; 溶解氧与浮游细菌全年呈显著负相关(春、夏季P<0.01, 秋冬季P<0.05); 叶绿素a除了春季外其他季节与浮游细菌相关性非常显著(P<0.01), 是浮游细菌的主要调控因子; 无机营养盐中, 氨盐和磷酸盐全年与浮游细菌丰度呈高度显著正相关(P<0.01); 对浮游细菌丰度具有调控作用, 硝态氮在冬季对浮游细菌丰度有显著调控作用。

关键词: 浮游细菌, 环境因子, 大鹏湾

Abstract:

The distribution characteristics of bacterioplankton in the Dapeng Bay were investigated by fluorescence micros-copy over an annual cycle. The relationships of bacterial abundance with temperature, dissolved oxygen, chlorophyll a, am-monium salt, nitrate, and phosphate were discussed. The results show that the bacterioplankton abundance throughout the year varied from 1.40×108 cells L?1 to 24.43×108 cells L?1. The level of bacteria abundance in each season was as follows: sum-mer>spring>autumn>winter. The horizontal distribution of bacterioplankton showed a higher inshore, gradually reduced off-shore, and a gradually reducing characteristic from the top to the bay mouth. Excluding summer, temperature had a significant correlation with bacterioplankton abundance (P<0.05). Bacterioplankton abundance and dissolved oxygen were negatively correlated throughout the year. Excluding spring, chlorophyll-a had a significant correlation with bacterioplankton abundance (P<0.01) and played a significant role in the control of bacterioplankton. Among the inorganic nutrients, ammonia and phos-phate salt were the dominant factors in controlling bacterioplankton; both had a significant correlation with bacterioplankton abundance (P<0.01). In winter, nitrate regulated the bacterioplankton.

Key words: bacterioplankton, environmental factors, Dapeng Bay