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/m L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。
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?105cell/m L 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.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
2015年第2期345-350,共6页
Oceanologia Et Limnologia Sinica
基金
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
关键词
浒苔
微观繁殖体
改性粘土
去除
萌发
Ulva prolifera
microscopic propagules
modified clay
removal
germination
