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| 桑沟湾浮游植物种类组成、数量分布及其季节变化 |
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李超伦1,2, 张永山1,2, 孙松1,2, 吴玉霖1, 方建光3, 张继红3
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1.中国科学院海洋研究所 海洋生态与环境科学重点实验室，青岛 266071;2.中国科学院海洋研究所 胶州湾海洋生态系统国家野外研究站，青岛 266071;3.农业部海洋渔业资源可持续利用重点开放实验室 中国水产科学研究院黄海水产研究所，青岛 266071
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| 摘要: |
| 浮游植物 种类组成 细胞密度 海水养殖 桑沟湾 |
| 关键词: 浮游植物 种类组成 细胞密度 海水养殖 桑沟湾 |
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| 基金项目:中国科学院知识创新工程方向项目（KZCX2-YW-213-3）、国家973课题（2006CB400606）和国家自然科学基金(40821004)共同资助 |
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| Species composition, density and seasonal variation of phytoplankton in Sanggou Bay, China |
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| Abstract: |
| The species composition, density and seasonal variation of phytoplankton in Sanggou Bay were investigated in April, July and November, 2006 and January, 2007. There were 92 species belonging to 28 genera of phytoplankton collected during the surveys, which were mainly composed of diatoms (74 species) and dinoflagellates (11 species). Dominance index analysis indicated that diatoms were the predominant species. Shannon Wiener index of diversity ranged from 1.91 to 2.74 on seasonal average (Spring > Summer > Autumn > Winter). The phytoplankton densities and their distribution patterns varied in different seasons. The highest density was in winter (188.4×104 cells/m3 on average). The densities were 63.0×104 and 11.7×104 cells/m3 on average in spring and autumn, respectively. The lowest density was in summer (9.2×104 cells/m3 on average). For the horizontal distribution patterns, phytoplankton was more abundant in the coastal shallow waters of the bay in winter and summer, whereas the higher densities were found in the shellfish kelp mixed culture areas which located in the center of the bay. Compared to the historical data, the species quantity and density of the phytoplankton obviously declined in Sanggou Bay after more than 20 years' mariculture. The density of culture species and culture technology had significant influences on the quantity and seasonal distribution of phytoplankton. |
| Key words: Phytoplankton Species composition DensityMariculture Sanggou Bay |