|
|||||
|
|
| UV-B辐射对3种海洋微藻的种间竞争性平衡的影响 | |
| 引用本文： | 于娟,唐学玺,田继远,张培玉,蔡恒江.UV-B辐射对3种海洋微藻的种间竞争性平衡的影响[J].中国海洋大学学报(自然科学版),2005,35(1):108-112. |
| 作者姓名： | 于娟 唐学玺 田继远 张培玉 蔡恒江 |
| 作者单位： | 1. 中国海洋大学海洋生命学院,山东,青岛,266003 2. 中国海洋大学海洋生命学院,山东,青岛,266003;青岛啤酒二厂,山东,青岛,266100 3. 中国海洋大学海洋生命学院,山东,青岛,266003;曲阜师范大学生物系,山东,曲阜,273165 |
| 基金项目： | 国家自然科学基金项目 (30 2 70 2 58)，山东省优秀中青年奖励基金项目 (0 3BS1 2 0 )资助 |
| 摘 要： | 为探讨UV-B辐射对海洋生态系统的影响，研究了短期(2d)UV-B辐射对金藻8701、小新月菱形藻和亚心形扁藻3种藻单养的敏感性比较以及长期(21d)UV-B辐射对3种藻混养的种间竞争性平衡的影响。实验表明，(1)UV-B条件下。单养和混养情况下，最敏感的藻是金藻8701，小新月菱形藻次之，亚心形扁藻最不敏感；(2)增强的UV-B为对UV-B具有高耐受力的亚心形扁藻提供了竞争优势，使种间竞争平衡向着有利于亚心形扁藻的方向发展，到第21天，UV-B辐射(2．88J／m^2，5．76J／m^2)的处理组中，亚心形扁藻成为优势种。 |
| 关 键 词： | UV-B增强 海洋微藻 种间竞争 |
| 文章编号： | 1672-5174(2005)01-108-05 |
| 修稿时间： | 2003年10月9日 |
Effects of UV-B Radiation on Competitive Balance of Three Species of Marine Microalgae |
|
| YU Juan,TANG Xue-xi,TIAN Ji-yuan ,ZHANG Pei-yu ,CAI Heng-jiang.Effects of UV-B Radiation on Competitive Balance of Three Species of Marine Microalgae[J].Periodical of Ocean University of China,2005,35(1):108-112. | |
| Authors: | YU Juan TANG Xue-xi TIAN Ji-yuan ZHANG Pei-yu CAI Heng-jiang |
| Institution: | YU Juan1,TANG Xue-xi1,TIAN Ji-yuan 1,2,ZHANG Pei-yu 1,3,CAI Heng-jiang1 |
| Abstract: | The sensitivity of short-term (2d) UV-B radiation on solitary cultivated three species of marine microalgae and the effects of long-term (21d) UV-B radiation on competitive balance of mixed cultivated three species of marine microalgae are examined in this experiment. Under the condition of solitary cultivation, in short-term(2d) UV-B radiation, the most sensitive algae of the three species of microalgae is Isochrysis galbama park 8701, the less is Nitzschia clostertium, the lastest is Platymonas subcordiformis. Under the condition of mixed cultivation, the total biomass of three species of microalgae under the UV-B dosage of 2.88J/m2, 5.76J/m2 is greatly reduced, and the community structure changes also. The experiment shows that the sensitivity of UV-B radiation on three species of microalgae is Isochrysis galbama park 8701>Nitzschia clostertium>Platymonas subcordiformis. Algal interspecific competition changes greatly during the experiment. When UV-B radiation dosage is at a level of 0J/m2, the dominant algae changes from Isochrysis galbama park 8701 to Nitzschia clostertium. When UV-B radiation is at a level of 2.88J/m2, the dominant algae changes from Isochrysis galbama park 8701 to Nitzschia clostertium, then changes from Nitzschia clostertium to Platymonas subcordiformis. When UV-B radiation dosage is at a level of 5.76J/m2, the dominant algae changes from Isochrysis galbama park 8701 to Platymonas subcordiformis. So enhanced UV-B radiation provide competitive dominance for Platymonas subcordiformis, which has high tolerance to UV-B, and in general, the effect of UV-B is in favor of Platymonas subcordiformis. On the 21 st day, in the treated groups of UV-B radiation(2.88J/m2,5.76J/m2), Platymonas subcordiformis becomes the dominant algae. |
| Keywords: | UV-B radiation marine microalgae interspecific competition |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |