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| 改性粘土对浒苔(Ulva prolifera)微观繁殖体去除效果及萌发的影响 |
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李靖1,2, 孙雷3, 宋秀贤1, 俞志明1
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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.中国科学院大学 北京 100049;3.中国海洋大学 青岛 266003
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| 摘要: |
| 本文首先考察了不同浓度改性粘土对浒苔微观繁殖体的去除效果, 实验结果显示, 去除率随着改性粘土浓度增大而逐渐提高, 0.4g/L 的改性粘土对初始密度为4.8×105cell/mL 的浒苔微观繁殖体去除率可达到80%以上。去除实验后继续研究微观繁殖体的萌发率发现, 与对照组相比, 不论是上层培养液中还是重新混合后的萌发率均随着改性粘土用量的增加而降低, 1.0g/L 的改性粘土可使其萌发率由60%左右降至低于6.5%。本文的研究结果表明, 适量的改性粘土能有效去除海水中的浒苔微观繁殖体、降低其萌发率, 有望成为消除或减弱绿潮灾害的有效手段。 |
| 关键词: 浒苔 微观繁殖体 改性粘土 去除 萌发 |
| DOI：10.11693/hyhz20140600184 |
| 分类号: |
| 基金项目:国家自然科学基金,41276115号;国家重点基础研究发展计划(973计划),2010CB428706号。 |
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| REMOVAL OF MICROSCOPIC PROPAGULE AND ITS GERMINATION OF ULVA PROLIFERA WITH MODIFIED CLAY |
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LI Jing1,2, SUN Lei3, SONG Xiu-Xian1, YU Zhi-Ming1
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1.Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, China Academy of science, Qingdao 266071, China;2.University of Chinese Academy of Sciences, Beijing 100049, China;3.Ocean University of China, Qingdao 266003, China
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| Abstract: |
| We examined the efficiency of Ulva prolifera microscopic propagules removal with modified clay of different concentrations. The results indicate that the removal rate boosted considerably with the increase of modified clay concentration. The clay in concentration at 0.4g/L could remove more than 80% of U. prolifera microscopic propagules in a 4.8×105 cell/mL culture. In addition, we assessed the rate of germination of microscopic propagules. We found that modified clay could depress effectively the germination of the microscopic propagules. Modified clay at 1.0g/L concentration reduced significantly the germination rate from 60% to <6.5%. Therefore, using modified clay can remove U. prolifera microscopic propagules from seawater and reduce their germination rate, indicating its potential application in control and mitigation of green tides. |
| Key words: Ulva prolifera microscopic propagules modified clay removal germination |
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