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Effect of the microorganism-adherent carrier for Nitzschia palea to control the cyanobacterial blooms
Ecological Engineering ( IF 3.8 ) Pub Date : 2020-12-19 , DOI: 10.1016/j.ecoleng.2020.106127
Aimin Hao , Tomokazu Haraguchi , Takahiro Kuba , He Kai , Yingchao Lin , Yasushi Iseri

To evaluate the effect of microorganism adherent carrier for Nitzschia palea on the control of Cyanobacterial blooms, the changes of phytoplankton population structure and the chlorophyll a concentration after carrier installation were compared with those without carrier installation in field and laboratory experiments. The results showed that the installation of the carrier could control the growth of Microcystis spp., effectively. In the field investigation, the cell number of Microcystis spp. can decrease to 54,800 cells/mL after 5 d treatment comparing to 464,000 cells/mL in water without treatment, but the installation of adherent carrier did not influence the growth of other phytoplanktons including Chlorophyta. Through the observation by a microscope, the adhesion of the Nitzschia palea to this carrier was observed as well as the gliding movement of the Nitzschia palea onto the colonies of Microcystis, indicating that the adhesion, invasion and sliding movement of Nitzschia palea induced the physical destruction and effective control of Microcystis colony. Overall, the installation of this carrier can promote the growth of Nitzschia palea near carrier fiber, and control cyanobacterial blooms by the invasion of Nitzschia palea onto Microcystis colony, which can be used as one of energy-saving and sustainable eco-engineered blue-grass control methods in closed water areas such as lakes and reservoirs.



中文翻译:

微生物结合载体对尼斯球菌的控制蓝藻水华的作用

为了评估微生物附着载体对褐线虫的控制,对蓝藻水华的控制,在野外和实验室实验中,比较了未安装载体的浮游植物种群结构和叶绿素a浓度的变化。结果表明,该载体的安装可以有效地控制微囊藻的生长。在野外调查中,微囊藻的细胞数spp。与未经处理的水中的464,000个细胞/ mL相比,处理5天后可减少至54,800个细胞/ mL,但粘附载体的安装并没有影响其他浮游植物(包括绿藻)的生长。通过用显微镜观察,的粘附菱形内稃中观察到该载波以及所述的滑动运动菱形内稃到的菌落微囊,表明的粘附,侵入和滑动运动菱形内稃引起的物理破坏并有效控制微囊藻的菌落。总体而言,安装此载体可以促进尼兹菌的生长附近的载体纤维,并通过将尼希Nitzschia)面色侵染微囊藻菌落上来控制蓝细菌的繁殖,这可作为一种节能且可持续的生态工程蓝草控制方法之一,用于湖泊和水库等封闭水域。

更新日期:2020-12-20
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