Can the algicidal material Ca-aminoclay be harmful when applied to a natural ecosystem? An assessment using microcosms
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Title
- Can the algicidal material Ca-aminoclay be harmful when applied to a natural ecosystem? An assessment using microcosms
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Author(s)
- Jung, Seung Won; Yun, Suk Min; Yoo, Jae Won; Li, Zhun; Jang, Pung-Guk; Lim, Dhong-I; Lee, Young-Chul; Lee, Hyun Uk; Lee, Taek-Kyun; Heo, Jinbee; Lee, Jin Hwan; Han, Myung-Soo
- KIOST Author(s)
- Jung, Seung Won(정승원); Jang, Pung Guk(장풍국); Lim, Dhong Il(임동일); Lee, Taek Kyun(이택견)
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Alternative Author(s)
- 정승원; LIZHUN; 장풍국; 임동일; 이택견; 허진비
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Publication Year
- 2015-11
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Abstract
- We assessed the ability of an artificial clay (Ca-aminoclay) to suppress harmful algal bloom species (HABs) such as Cochlodinium polykrikoides and Chattonella marina and investigated the ecological responses in the closed and open microcosm systems. The Ca-aminoclay induced rapidly and selectively cell lysis in the HABs. However, applying Ca-aminoclay could cause adverse impacts in terms of biological and environmental changes. The bacterioplankton abundance increased and then, the abundances of heterotrophic nanoflagellates and ciliates increased rapidly. Extremely poor environmental conditions such as increase in nutrients and development of anoxic conditions were sustained continuously in a closed system, while the environmental conditions in open systems deteriorated before recovering to the initial conditions. We evaluated the potential for the occurrence of a bloom of another phytoplankton after HABs had been controlled using the Ca-aminoclay. The Ca-aminoclay controlled blooms of Chattonella marina in mixed cell cultures containing a Tetraselmis chui. However, T. chui increased over time and then bloomed. Therefore, caution should be taken when considering the direct application of Ca-aminoclay in natural environments even though it offers the rapid removal of HABs. (C) 2015 Elsevier B.V. All rights reserved.
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ISSN
- 0304-3894
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/2372
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DOI
- 10.1016/j.jhazmat.2015.05.012
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Bibliographic Citation
- JOURNAL OF HAZARDOUS MATERIALS, v.298, pp.178 - 187, 2015
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Publisher
- ELSEVIER SCIENCE BV
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Keywords
- Algicidal material; Ca-aminoclay; Harmful algal blooms; Microcosm experiments
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Type
- Article
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Language
- English
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Document Type
- Article
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