Can the algicidal material Ca-aminoclay be harmful when applied to a natural ecosystem? Changes in Bacterioplankton community

Title
Can the algicidal material Ca-aminoclay be harmful when applied to a natural ecosystem? Changes in Bacterioplankton community
Author(s)
정승원
KIOST Author(s)
Jung, Seung Won(정승원)
Publication Year
2016-05-20
Abstract
The aim of the present study was to determine how bacterioplankton communities change when Cochlodinium polykrikoides blooms are subject to control following the introduction of the algicidal material Ca-aminoclay, and to clarify whether the compositions of the bacterioplankton communities are species-specific for phytoplankton. Specifically, we analysed changes in the genetic diversity of bacterioplankton communities using 454 pyrosequencing in sub-samples obtained from in situ microcosm experiments containing natural C. polykrikoides blooms and the natural phytoplankton community. It was noted that α-proteobacteria and Bacteroidetes were strongly associated with the blooming stage of C. polykrikoides, suggesting that these bacterioplankton groups are intimately linked to the development of C. polykrikoides blooms. In contrast, γ-proteobacteria were associated with the termination of harmful algal blooms and hypertrophic environmental conditions due to the algicidal material Ca-aminoclay. In water containing C. polykrikoides blooms, the bacterioplankton community exhibited marked differences for example, Phaeobacter caeruleus (α-proteobacteria) formed a large proportion of all the bacterioplankton communities, while Tenacibaculum aestuarii and Flavobacterium aquidurense (Bacteroidetes) increased during the early stages of C. polykrikoides bloom decline. The information obtained from this study will be important e compositions of the bacterioplankton communities are species-specific for phytoplankton. Specifically, we analysed changes in the genetic diversity of bacterioplankton communities using 454 pyrosequencing in sub-samples obtained from in situ microcosm experiments containing natural C. polykrikoides blooms and the natural phytoplankton community. It was noted that α-proteobacteria and Bacteroidetes were strongly associated with the blooming stage of C. polykrikoides, suggesting that these bacterioplankton groups are intimately linked to the development of C. polykrikoides blooms. In contrast, γ-proteobacteria were associated with the termination of harmful algal blooms and hypertrophic environmental conditions due to the algicidal material Ca-aminoclay. In water containing C. polykrikoides blooms, the bacterioplankton community exhibited marked differences for example, Phaeobacter caeruleus (α-proteobacteria) formed a large proportion of all the bacterioplankton communities, while Tenacibaculum aestuarii and Flavobacterium aquidurense (Bacteroidetes) increased during the early stages of C. polykrikoides bloom decline. The information obtained from this study will be important
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/24768
Bibliographic Citation
한국해양학회, pp.BP20, 2016
Publisher
한국해양학회
Type
Conference
Language
English
Publisher
한국해양학회
Related Researcher
Research Interests

Phytoplatnkon taxonomy,Phytoplatnkon physiology,Phycosphere,식물플랑크톤 분류,식물플랑크톤 생리,식물플랑크톤, 바이러스, 박테리아 관계

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