| 黄海冷水团海域微型异养鞭毛虫与细菌的弱耦合关系 |
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| 引用本文： | 林施泉,黄凌风,陆家昌.黄海冷水团海域微型异养鞭毛虫与细菌的弱耦合关系[J].海洋学报(英文版),2014,33(9):125-132. |
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| 作者姓名： | 林施泉 黄凌风 陆家昌 |
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| 作者单位： | 国家海洋局海洋生态系统与生物地球化学重点实验室国家海洋局第二海洋研究所杭州, 310012;滨海湿地生态系统教育部重点实验室（厦门大学）, 厦门 361102;厦门大学海洋与地球学院, 厦门 361102 |
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| 基金项目： | The National Basic Research Program (973 Program) of China under contract Nos 2006CB400604 and 2011CB409804; the National Natural Science Foundation of China under contract No. 40876078. |
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| 摘 要： | A study was carried out to investigate the grazing pressure of heterotrophic nanoflagellates(HNF) on bacteria assemblages in the Yellow Sea Cold Water Mass(YSCWM) area in October, 2006. The results show that the HNF abundance ranges from 303 to 1 388 mL-1, with a mean of 884 mL-1. The HNF biomass is equivalent to 10.6%–115.6% of that of the bacteria. The maximum abundance of the HNF generally occurred in the upper 30 m water layer, with a vertical distribution pattern of surface layer abundance greater than middle layer abundance, then bottom layer abundance. The hydrological data show that the YSCWM is located in the northeastern part of the study area, typically 40 m beneath the surface. A weak correlation is found between the abundances of HNF and bacteria in both the YSCWM and its above water layer. One-way ANOVA analysis reveals that the abundance of HNF and bacteria differs between inside the YSCWM and in the above water mass. The ingestion rates of the HNF on bacteria was 8.02±3.43 h-1 in average. The grazing rate only represented 22.75%±6.91% of bacterial biomass or 6.55%+4.24% of bacterial production, implying that the HNF grazing was not the major factor contributing to the bacterial loss in the YSCWM areas.
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| 关 键 词： | 黄海冷水团 细菌 弱耦合 垂直分布格局 方差分析表 放牧压力 数据显示 平均值 |
| 收稿时间： | 2/7/2013 12:00:00 AM |
| 修稿时间： | 2013/9/13 0:00:00 |
Weak coupling between heterotrophic nanoflagellates and bacteria in the Yellow Sea Cold Water Mass area |
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| LIN Shiquan,HUANG Lingfeng and LU Jiachang.Weak coupling between heterotrophic nanoflagellates and bacteria in the Yellow Sea Cold Water Mass area[J].Acta Oceanologica Sinica,2014,33(9):125-132. |
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| Authors: | LIN Shiquan HUANG Lingfeng and LU Jiachang |
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| Institution: | 1.Key Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China2.Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems (Xiamen University), Xiamen 361102, China3.College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China |
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| Abstract: | A study was carried out to investigate the grazing pressure of heterotrophic nanoflagellates (HNF) on bacteria assemblages in the Yellow Sea Cold Water Mass (YSCWM) area in October, 2006. The results show that the HNF abundance ranges from 303 to 1 388 mL-1, with a mean of 884 mL-1. The HNF biomass is equivalent to 10.6%-115.6% of that of the bacteria. The maximum abundance of the HNF generally occurred in the upper 30 m water layer, with a vertical distribution pattern of surface layer abundance greater than middle layer abundance, then bottom layer abundance. The hydrological data show that the YSCWM is located in the northeastern part of the study area, typically 40 m beneath the surface. A weak correlation is found between the abundances of HNF and bacteria in both the YSCWM and its above water layer. One-way ANOVA analysis reveals that the abundance of HNF and bacteria differs between inside the YSCWM and in the above water mass. The ingestion rates of the HNF on bacteria was 8.02±3.43 h-1 in average. The grazing rate only represented 22.75%±6.91% of bacterial biomass or 6.55%+4.24% of bacterial production, implying that the HNF grazing was not the major factor contributing to the bacterial loss in the YSCWM areas. |
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| Keywords: | Yellow Sea Cold Water Mass heterotrophic nanoflagellates bacteria trophic coupling temperature |
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