| 摘要: |
| 研究了2010 年冬季胶州湾23 个大面站浮游植物的群落结构特征。共检出浮游植物5 门44属69 种, 平均细胞丰度为222.8cell/mL, 其中硅藻在物种数量和细胞丰度上占绝对优势。主要优势种为柔弱几内亚藻Guinardia delicatula、扭链角毛藻Chaetoceros tortissimus、诺氏海链藻Thalassiosiranordenskiöldii 和尖刺伪菱形藻Pseudo-nitzschia pungens。调查期内浮游植物表层细胞丰度的平面分布趋势为北部高于南部低, 而垂直分布则为上各水层之间细胞丰度相差别不大。表层浮游植物的Shannon-Wiener 指数和均匀度指数变化较大, 分布显示胶州湾深水区东南至湾口海域浮游植物群落更加均匀稳定, 而近岸区可能受海冰影响情况较复杂。与环境因子的相关分析表明浮游植物细胞丰度与铵盐、硝酸盐、亚硝酸盐、硅酸盐呈显著的正相关。 |
| 关键词: 浮游植物 胶州湾 冬季 群落结构 海冰 |
| DOI：10.11693/hyhz20140700211 |
| 分类号: |
| 基金项目:国家重点基础研究发展计划(973)项目,2010CB428701号,2005CB422305号。 |
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| PHYTOPLANKTON COMMUNITY OF JIAOZHOU BAY IN WINTER 2010 |
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SHI Xiao-Yong1,2, WANG Li-Sha1, YANG Shi-Min3
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1.College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China;2.National Marine Hazard Mitigation Service, SOA, Beijing 100194, China;3.Vessel Center Laboratory, Ocean University of China, Qingdao 266003, China
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| Abstract: |
| We studied the characteristics of phytoplankton community based on phytoplankton data from 23 grid stations in the Jiaozhou Bay in winter 2010. Five classes including 44 genera and 69 species were identified. The average cell abundance was 222.8 ind./mL. The abundance and distribution of diatoms reflected the overall variation of phytoplankton. The dominant species were Guinardia delicatula, Chaetoceros tortissimus, Thalassiosira nordenskiöldii, and Pseudo-nitzschia pungens. The phytoplankton cell abundance was higher in the northern section and lower in the southern in horizontal distribution, and no significant difference from surface layer to the bottom in vertical distribution. The horizontal distribution of phytoplankton Shannon-Wiener index varied greatly from 0.497 to 3.404 in average of 2.335, high in the mouth area and low in the northwestern section due probably to the impact of sea ice. The Pielou index ranged 0.150—0.831 in average of 0.600, which is quite high in overall, high in the southeastern section and the mouth and low in the northwestern. Therefore, the phytoplanktonic community structure was comparatively even and stable in the deep area but near-coast shallow area. In addition, the phytoplankton cell abundance correlated positively to the ammonia, nitrate, nitrite, and silicate. |
| Key words: phytoplankton Jiaozhou Bay winter community structure sea ice |
