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Index for comparative evaluation of ecological effects between ionizing radiation and other toxic agents; Application to the model ecosystem data
https://repo.qst.go.jp/records/67543
https://repo.qst.go.jp/records/675432910c3a6-ffe6-4ead-a521-8f37547fbeb7
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2003-10-15 | |||||
| タイトル | ||||||
| タイトル | Index for comparative evaluation of ecological effects between ionizing radiation and other toxic agents; Application to the model ecosystem data | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Fuma, Shoichi
× Fuma, Shoichi× Doi, Masahiro× Takeda, Hiroshi× Kawabata, Zenichiro× Saitou, Masahiro× 府馬 正一× 土居 雅広× 武田 洋× 齊藤 眞弘 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The authors proposed an index for holistic evaluation of effects on various parameters in ecosystems exposed to ionizing radiation and other toxic agents. As the index, i.e., EEI (Ecological effect index), degrees of differences in parameter values between exposed and control ecosystems were expressed as the Euclidean distance weighted by ecological importance of each parameter. The authors applied the EEI to their ecotoxicological study, in which the aquatic model ecosystem (microcosm) consisting of three species of microorganisms was exposed to gamma-rays, ultraviolet radiation, acids and some metals, and their effects on the cell densities were investigated. The EEI for the microcosm was positively correlated with log-transformed doses of each toxic agent, and the relationship between them could be fitted by a sigmoid curve. A 50 % effect dose for the microcosm (EDM50), at which the EEI became 50 %, could be calculated in a similar manner to a 50 % effect concentration (EC50), which has been regarded as one of important toxicity data in conventional single-species tests for chemicals. The EDM50 made it possible to quantitatively compare effect doses for the microcosm between gamma-rays and the other toxic agents concerned. It was therefore expected that the EEI would contribute to comparative evaluation of effects on natural ecosystems. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | International Conference on the Protection of the Environment from the Effects of Ionising Radiation | |||||
| 発表年月日 | ||||||
| 日付 | 2003-10-10 | |||||
| 日付タイプ | Issued | |||||
