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The impact of the Fukushima nuclear accident on marine biota: retrospective assessment of the first year and perspectives
Vives i Batlle, J.; Aono, T; Brown, E; Hosseini, A; Gamier-Laplace, J; Sazykina, T; Steenhuisen, F; Strand, P (2014). The impact of the Fukushima nuclear accident on marine biota: retrospective assessment of the first year and perspectives. Sci. Total Environ. 487: 143-153. dx.doi.org/10.1016/j.scitotenv.2014.03.137
In: Science of the Total Environment. Elsevier: Amsterdam. ISSN 0048-9697; e-ISSN 1879-1026, meer
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| Trefwoord |
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| Author keywords |
Fukushima; Non-human biota; Radiological assessment; UNSCEAR |
| Auteurs | | Top |
- Vives i Batlle, J., meer
- Aono, T
- Brown, E
- Hosseini, A
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- Gamier-Laplace, J
- Sazykina, T
- Steenhuisen, F
- Strand, P
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| Abstract |
An international study under the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) was performed to assess radiological impact of the nuclear accident at the Fukushima-Daiichi Nuclear Power Station (FDNPS) on the marine environment. This work constitutes the first international assessment of this type, drawing upon methodologies that incorporate the most up-to-date radioecological models and knowledge. To quantify the radiological impact on marine wildlife, a suite of state-of-the-art approaches to assess exposures to Fukushima derived radionuclides of marine biota, including predictive dynamic transfer modelling, was applied to a comprehensive dataset consisting of over 500 sediment, 6000 seawater and 5000 biota data points representative of the geographically relevant area during the first year after the accident. The dataset covers the period from May 2011 to August 2012. The method used to evaluate the ecological impact consists of comparing dose (rates) to which living species of interest are exposed during a defined period to critical effects values arising from the literature. The assessed doses follow a highly variable pattern and generally do not seem to indicate the potential for effects. A possible exception of a transient nature is the relatively contaminated area in the vicinity of the discharge point, where effects on sensitive endpoints in individual plants and animals might have occurred in the weeks directly following the accident. However, impacts on population integrity would have been unlikely due to the short duration and the limited space area of the initially high exposures. Our understanding of the biological impact of radiation on chronically exposed plants and animals continues to evolve, and still needs to be improved through future studies in the FDNPS marine environment. |
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