Biological half-life of radioactive cesium in Japanese rockfish  Sebastes cheni  contaminated by the Fukushima Daiichi nuclear power plant accident

Matsumoto, Akira; Shigeoka, Yu; Arakawa, Hisayuki; Hirakawa, Naoto; Yoshiaki, Morioka; Mizuno, Takuji

doi:10.1016/j.jenvrad.2015.08.003

Cited by 20 publications

(15 citation statements)

References 34 publications

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“…24 Matsumoto et al reared 23 individuals of the same species contaminated by the FDNPP accident and caught off Fukushima prefecture, and they reported 40 a decline rate (±SE) of 0.3 ± 0.02% d −1 . Although the standard errors of the decline rates in our analyses were large (0.3% d −1 ), the mean value (0.2% d −1 ) was comparable to that derived from field observations reported by Tagami and Uchida 24 and the laboratory study of Matsumoto et al 40 137 Cs in the fish with the y-intercept the same as that derived from the observations off Fukushima, and the lower limit of the loss rates (1% d −1 ) found in laboratory studies. The dotted lines represent the depuration curves of 137 Cs with the y-intercept the same as that derived from the observations off Fukushima, and the upper limit of the loss rates (5% d −1 ) found in laboratory studies.…”

Section: Environmental Science and Technologysupporting

confidence: 87%

“…The higher 137 Cs concentrations typically observed in benthic fish might be caused by higher initial 137 Cs contamination following the accident, or slower depuration of the 137 Cs. Most studies focused on the depuration rates ,, rather than the initial contamination levels. Our analysis of the data (SI Figures S1 and S2) showed that, among the fish of the three ecological groups considered here, the initial contamination of 137 Cs was highest in the pelagic species Japanese sandlance A. personatus (7200 Bq kg –1 ), followed by the benthic species olive flounder P. olivaceus (2250 Bq kg –1 ) and the benthopelagic species brown hakeling P. maximowiczi (885 Bq kg –1 ).…”

Section: Resultsmentioning

confidence: 99%

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Temporal Changes in ¹³⁷Cs Concentrations in Fish, Sediments, And Seawater off Fukushima Japan

Wang

Cerrato

Fisher

2018

Environ. Sci. Technol.

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We analyzed publicly available data of Fukushima 137 Cs concentrations in coastal fish, in surface and bottom waters, and in surface marine sediments and found that within the first year of the accident pelagic fish lost 137 Cs at much faster rates (mean of ∼1.3% d −1 ) than benthic fish (mean of ∼0.1% d −1 ), with benthopelagic fish having intermediate loss rates (mean of ∼0.2% d −1 ). The loss rates of 137 Cs in benthic fish in the first year were more comparable to the decline of 137 Cs concentrations in sediments (0.03% d −1 ), and the declines in pelagic fish were more comparable to the declines in seawater. Retention patterns of 137 Cs in pelagic fish were comparable to that in laboratory studies of fish in which there were no sustained 137 Cs sources, whereas the benthopelagic and benthic fish species retained 137 Cs to a greater extent, consistent with the idea that there is a sustained additional 137 Cs source for these fish. These field data, based on 13 511 data points in which 137 Cs was above the detection limit, are consistent with conclusions from laboratory experiments that demonstrate that benthic fish can acquire 137 Cs from sediments, primarily through benthic invertebrates that contribute to the diet of these fish.

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Section: Environmental Science and Technologysupporting

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Temporal Changes in ¹³⁷Cs Concentrations in Fish, Sediments, And Seawater off Fukushima Japan

Wang

Cerrato

Fisher

2018

Environ. Sci. Technol.

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“…However, it is usually considered that transfer between sediment radioactive contamination and biota is only minor [14]. Another possibility is that different fish positions in the trophic web and feeding behaviours could result in different bioaccumulation and depuration profiles along the food chain [5–7, 9]. Regarding the food chain, it should be emphasised that the trophic web in the marine environment is generally considered to be unstructured and opportunistic [15, 16].…”

Section: Introductionmentioning

confidence: 99%

A dual pathways transfer model to account for changes in the radioactive caesium level in demersal and pelagic fish after the Fukushima Daï-ichi nuclear power plant accident

Fiévet¹,

Bailly-du-Bois²,

Laguionie³

et al. 2017

PLoS ONE

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The Fukushima Daï-ichi nuclear power plant (FDNPP) accident resulted in radioactive Cs being discharged into the local marine environment. While Cs bioaccumulates in biota and slowly depurates, the Cs concentrated in biota constitutes a source of Cs for animals feeding on each other. The marine biota therefore serves as a pool that recycles Cs, and this recycling process delays depuration in the fish feeding on this biota pool. Because the continental shelf is squeezed between the coast and very deep sea, the demersal marine species are confined to a narrow strip along the coast, close to the source of the radioactive input. Unlike demersal species, however, pelagic species are not restricted to the most contaminated area but instead spend some, if not most, of their time and feeding off-shore, far from the input source. We suggest that the feeding pathway for fish is a box whose size depends on their mobility, and that this feeding box is much larger and less contaminated (because of dilution through distance) for pelagic fish than for demersal fish. The aim of this paper is to test this hypothesis and to propose a simple operational model implementing two transfer routes: from seawater and from feeding. The model is then used to match the observational data in the aftermath of the FDNPP accident.

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“…However, with the addition of nutrients (NG), the algae can engage in compensatory growth, requiring uptake of micronutrients, as a response to the grazing pressure. "Growth dilution" could also play a role-this phenomenon has been observed with other radioactive and nonradioactive substances in aquatic biota (Thomann 1981;Matsumoto et al 2015). Thus, grazing and nutrient addition cancel each other out (compare C and NG).…”

Section: Uptake In F Vesiculosusmentioning

confidence: 84%

“…pressure. "Growth dilution" could also play a role -this phenomenon that has been observed with other radioactive and non-radioactive substances in aquatic biota (Thomann 1981;Matsumoto et al 2015). Thus, grazing and nutrient addition cancel each other out (compare C and NG).…”

Section: Accepted Articlementioning

confidence: 87%

Trophic Transfer of Radioactive Micronutrients in a Shallow Benthic Food Web

Holmerin

Jensen

Hevrøy

et al. 2021

Enviro Toxic and Chemistry

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The Baltic Sea is one of the most polluted seas in the world with widespread eutrophication and radionuclide contamination. Using key species of the Baltic Sea, the effects of eutrophication on uptake and trophic transfer of the radioactive micronutrients commonly found in nuclear power plant effluents were investigated using aquaria in a controlled environment. The aquaria included the brown macroalgae Fucus vesiculosus and the grazers Idotea balthica and Theodoxus This article is protected by copyright. All rights reserved. Accepted Article fluviatilis. Rapid uptake of 54 Mn, 57 Co and 65 Zn from water was observed in all biota, and eutrophication combined with grazing pressure strongly influenced the uptake in F. vesiculosus. Uptake of 54 Mn, 57 Co and 65 Zn to I. balthica and T. fluviatilis grazing on F. vesiculosus was also observed. The results indicate that ecosystems could be open for further trophic transfer as radionuclides accumulate quickly in the producers and are transferred to primary consumers.

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Biological half-life of radioactive cesium in Japanese rockfish Sebastes cheni contaminated by the Fukushima Daiichi nuclear power plant accident

Cited by 20 publications

References 34 publications

Temporal Changes in ¹³⁷Cs Concentrations in Fish, Sediments, And Seawater off Fukushima Japan

Temporal Changes in ¹³⁷Cs Concentrations in Fish, Sediments, And Seawater off Fukushima Japan

A dual pathways transfer model to account for changes in the radioactive caesium level in demersal and pelagic fish after the Fukushima Daï-ichi nuclear power plant accident

Trophic Transfer of Radioactive Micronutrients in a Shallow Benthic Food Web

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Biological half-life of radioactive cesium in Japanese rockfish Sebastes cheni contaminated by the Fukushima Daiichi nuclear power plant accident

Cited by 20 publications

References 34 publications

Temporal Changes in 137Cs Concentrations in Fish, Sediments, And Seawater off Fukushima Japan

Temporal Changes in 137Cs Concentrations in Fish, Sediments, And Seawater off Fukushima Japan

A dual pathways transfer model to account for changes in the radioactive caesium level in demersal and pelagic fish after the Fukushima Daï-ichi nuclear power plant accident

Trophic Transfer of Radioactive Micronutrients in a Shallow Benthic Food Web

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Temporal Changes in ¹³⁷Cs Concentrations in Fish, Sediments, And Seawater off Fukushima Japan

Temporal Changes in ¹³⁷Cs Concentrations in Fish, Sediments, And Seawater off Fukushima Japan