2009年12月
Effects of acute gamma-irradiation on the aquatic microbial microcosm in comparison with chemicals
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
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- 巻
- 100
- 号
- 12
- 開始ページ
- 1027
- 終了ページ
- 1033
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jenvrad.2009.06.007
- 出版者・発行元
- ELSEVIER SCI LTD
Effects of acute gamma-irradiation were investigated in the aquatic microcosm consisting of green algae (Chlorella sp. and Scenedesmus sp.) and a blue-green alga (Tolypothrix sp.) as producers; an oligochaete (Aeolosoma hemprichi), rotifers (Lecane sp. and Philodina sp.) and a ciliate protozoan (Cyclidium glaucoma) as consumers; and more than four species of bacteria as decomposers. At 100 Gy, populations were not affected in any taxa. At 500-5000 Gy, one or three taxa died out and populations of two or three taxa decreased over time, while that of Tolypothrix sp. increased. This Tolypothrix sp. increase was likely an indirect effect due to interspecies interactions. The principal response curve analysis revealed that the main trend of the effects was a dose-dependent population decrease. For a better understanding of radiation risks in aquatic microbial communities, effect doses of gamma-rays compared with copper, herbicides and detergents were evaluated using the radiochemoecological conceptual model and the effect index for microcosm. (C) 2009 Elsevier Ltd. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.jenvrad.2009.06.007
- ISSN : 0265-931X
- Web of Science ID : WOS:000271528000006