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| 大气CO2浓度升高对繁茂膜海绵滤食海水细菌能力的影响 |
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张晓芳1, 徐 辉2, 刘宏文2, 王明涛3, 王仁斌4, 李 毅3, 赵德辉3, 李振强4, 石其寿5, 赵伟东3, 王 伟4, 付晚涛3,6
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1.獐子岛集团股份有限公司;2.大连市环境监测中心;3.大连海洋大学 海洋科技与环境学院;4.长海渔港监督处;5.长海县海洋与渔业局 獐子岛监督管理站;6.辽宁省高校近岸海洋环境科学与技术重点实验室
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| 摘要: |
| 通过模拟大气CO2浓度升高, 研究其对海绵滤食细菌功能的影响。在模拟大气CO2浓度升高生态系统中, 探究了大气CO2浓度387、500、750和1 000 μmol/mol环境下繁茂膜海绵(Hymeniacidon perlevis)滤食灭菌海水中大肠杆菌(Escherichia coli AS 1.1017)和灿烂弧菌(Vibrio splendidus)的能力。结果表明: 在24 h实验期间, 模拟大气CO2从目前约387 μmol/mol升高至500 μmol/mol, 繁茂膜海绵滤食大肠杆菌和灿烂弧菌效率提高了。当模拟大气CO2 750 μmol/mol时, 繁茂膜海绵滤食海水中大肠杆菌和灿烂弧菌功能都下降了, 说明繁茂膜海绵已经受到大气较高浓度CO2损害。模拟大气CO2为1 000 μmol/mol时, 繁茂膜海绵基本丧失了滤食海水中大肠杆菌和灿烂弧菌的功能。上述结果可为了解大气CO2浓度对近岸海洋生态系统的影响提供科学依据。 |
| 关键词: 大气CO2浓度升高 影响 繁茂膜海绵(Hymeniacidon perlevis) 滤食 细菌 |
| DOI：10.11759/hykx20170227001 |
| 分类号: |
| 基金项目:“十二五”国家科技支撑计划项目(2015BAD13B05); 辽宁省海洋与渔业厅科研计划项目(201215); 大连海洋大学2012 年校列科研项目(2012HYDX09) |
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| Influence of increasing atmospheric CO2 concentration on the ability of the marine sponge Hymeniacidon perlevis to filterfeed bacteria in seawater |
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ZHANG Xiao-fang,XU Hui,LIU Hong-wen,WANG Ming-tao,WANG Ren-bin,LI Yi,ZHAO De-hui,LI Zhen-qiang,SHI Qi-shou,ZHAO Wei-dong,WANG Wei,FU Wan-tao
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| Abstract: |
| The influence of carbon dioxide (CO2) concentration on the capability of Hymeniacidon perlevis filter-feeding bacteria was studied by simulating an elevated atmospheric CO2 concentration. In the simulated ecosystem, the capability of H. perlevis filter-feeding Escherichia coli AS 1.1017 and Vibrio splendidus was explored, respectively, in sterilized seawater under 387, 500, 750 and 1 000 μmol/mol. The results showed that the efficiency of H. perlevis filter-feeding bacteria was improved when the CO2 concentration elevated from 387 μmol/mol to 500 μmol/mol; however, the capacity of H. perlevis filter-feeding bacteria was decreased when the CO2 concentration elevated to 750 μmol/mol. This result indicates that the relatively high CO2 concentration damages the filter-feeding efficiency of H. perlevis, and the efficiency was lost when the CO2 concentration elevated to 1000 μmol/mol. This study provides a scientific basis for predicting the effect of atmospheric CO2 concentration on the coastal ecosystem. |
| Key words: elevated atmospheric CO2 concentration influence Hymeniacidon perlevis filter-feeding marine bacteria |