scholarly journals Effects of species and geo-information on the 137Cs concentrations in edible wild mushrooms and plants collected by residents after the Fukushima nuclear accident

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Masabumi Komatsu ◽  
Shoji Hashimoto ◽  
Toshiya Matsuura
Keyword(s):  
Nuclear Power ◽  
Forest Products ◽  
Internal Exposure ◽  
Wild Plants ◽  
Estimation Accuracy ◽  
Location Information ◽  
Wild Mushrooms ◽  
Mushroom Species ◽  
Local Residents ◽  
Surrounding Areas

AbstractAfter the accident at the Fukushima Daiichi Nuclear Power Plant (FDNPP), much of the wild and edible mushrooms and plants in the surrounding areas were contaminated with radiocesium (137Cs). To elucidate their concentration characteristics, we analyzed 137Cs radioactivity data in edible forest products brought in for food inspection by the residents of Kawauchi Village, 12–30 km away from the FDNPP, from 2012 to 2019. A Bayesian model to estimate 137Cs concentration was constructed. Parameters of the normalized concentration of species (NCsp) for mushrooms were similar to those of the same species obtained in a previous study. Although NCsp values were highly varied among species, mycorrhizal mushrooms tended to have high NCsp values, followed by saprotrophic mushrooms, and wild edible plants values were low. Also, half of mycorrhizal mushroom species (8 of 16) showed an increasing trend in concentration with time; however, saprotrophic mushrooms and wild plants generally demonstrated a decreasing trend (22 of 24). The model considering the sub-village location information decreased the error of individual samples by 40% compared to the model not considering any location information, indicating that the detailed geo-information improved estimation accuracy. Our results indicate that the radioactivity data from samples collected by local residents can be used to accurately assess internal exposure to radiation due to self-consumption of contaminated wild mushrooms and plants.

scholarly journals The Knowledge and Awareness for Radiocesium Food Monitoring after the Fukushima Daiichi Nuclear Accident in Nihonmatsu City, Fukushima Prefecture

2018 ◽  
Vol 15 (10) ◽  
pp. 2289 ◽  
Author(s):  
Nobuaki Kunii ◽  
Maya Fujimura ◽  
Yukako Komasa ◽  
Akiko Kitamura ◽  
Hitoshi Sato ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Internal Exposure ◽  
Wild Plants ◽  
Fukushima Prefecture ◽  
Edible Wild Plants ◽  
Increased Risk ◽  
Fdnpp Accident ◽  
Food Monitoring ◽  
Fukushima Daiichi ◽  
The Government

On 11 March 2011, Japan experienced a massive earthquake and tsunami that triggered the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident, resulting in the release of large amounts of cesium-134 and -137 into the atmosphere. In addition to the food radioactivity control in the markets throughout the country, radiocesium concentrations in locally grown foods were voluntarily inspected and the results were shown to the residents by the local government to raise their awareness of the internal radiation contamination risk from low knowledge in Nihonmatsu City, Fukushima Prefecture. In this longitudinal study, local food products for in-home consumption were evaluated by seven different food radioactivity measuring devices in Nihonmatsu City from 2011–2017. Radiocesium was detected in local foods in Nihonmatsu City even six years after the FDNPP accident. The highest number of products tested was in 2012, with the number steadily decreasing thereafter. Most foods had contamination levels that were within the provisional regulation limits. As edible wild plants and mushrooms continue to possess high radiocesium concentrations, new trends in radioactivity in foods like seeds were discovered. This study highlights that the increased risk of radiation exposure could possibly be due to declining radiation awareness among citizens and food distributors. We recommend the continuation of food monitoring procedures at various points in the food processing line under the responsibility of the government to raise awareness for the reduction of future risks of internal exposure.

scholarly journals Radiocesium concentrations in wild mushrooms collected in Kawauchi Village after the accident at the Fukushima Daiichi Nuclear Power Plant

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1427 ◽  
Author(s):  
Kanami Nakashima ◽  
Makiko Orita ◽  
Naoko Fukuda ◽  
Yasuyuki Taira ◽  
Naomi Hayashida ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Radioactive Cesium ◽  
Wild Mushrooms ◽  
Nuclear Disaster ◽  
Average Intake ◽  
Local Residents ◽  
Effective Doses ◽  
Fukushima Daiichi

It is well known from the experience after the 1986 accident at the Chernobyl Nuclear Power Plant that radiocesium tends to concentrate in wild mushrooms. In this study, we collected wild mushrooms from the Kawauchi Village of Fukushima Prefecture, located within 30 km of the Fukushima Daiichi Nuclear Power Plant, and evaluated their radiocesium concentrations to estimate the risk of internal radiation exposure in local residents. We found that radioactive cesium exceeding 100 Bq/kg was detected in 125 of 154 mushrooms (81.2%). We calculated committed effective doses based on 6,278 g per year (age > 20 years, 17.2 g/day), the average intake of Japanese citizens, ranging from doses of 0.11–1.60 mSv, respectively. Although committed effective doses are limited even if residents eat contaminated foods several times, we believe that comprehensive risk-communication based on the results of the radiocesium measurements of food, water, and soil is necessary for the recovery of Fukushima after this nuclear disaster.

Assessment of Internal Exposure Doses in Fukushima by a Whole Body Counter Within One Month after the Nuclear Power Plant Accident

2013 ◽  
Vol 179 (6) ◽  
pp. 663-668 ◽  
Author(s):  
Naoki Matsuda ◽  
Atsushi Kumagai ◽  
Akira Ohtsuru ◽  
Naoko Morita ◽  
Miwa Miura ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Internal Exposure ◽  
Whole Body ◽  
Nuclear Power Plant Accident ◽  
Body Counter ◽  
Whole Body Counter

scholarly journals Estimated internal exposure doses due to indoor radiocaesium contamination in residential houses after the Fukushima nuclear accident

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hiroko Yoshida-Ohuchi ◽  
Naohide Shinohara
Keyword(s):  
Particle Size ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
House Dust ◽  
Nuclear Power ◽  
Measured Data ◽  
Internal Exposure ◽  
Effective Doses ◽  
Fukushima Daiichi ◽  
Work First

Abstract This work first reports the estimation of the internal exposure from ingestion of house dust and inhalation of aerosol, by employing a measured data on 137Cs activities, bioaccessibility (solubility to water and 1 M HCl), and particle size distribution. The house dust and aerosol samples were collected during the actual indoor cleaning by vacuuming and dusting, from 65 houses and buildings in proximity to the Fukushima Daiichi nuclear power plant (FDNPP) (1.6–16.1 km from the FDNPP) during a period from April 2016 to January 2019. Committed effective doses for an adult owing to the ingestion of house dust of 20 mg per day, which adheres to one’s hands through the hand-to-mouth, and those owing to inhalation of aerosol during dusting for 1.5 h while wearing a mask, were calculated using DCAL software for each house or building, as 1.13 µSv and 4.55 µSv as maximum doses, respectively (as of March 2011). Both the committed effective doses, owing to ingestion and inhalation, were inversely correlated with the distance from the FDNPP, and positively correlated with the indoor surface contamination.

Public Health Concerns on Radiation Exposure After the Fukushima Daiichi Nuclear Power Plant Accident

2015 ◽  
Vol 10 (sp) ◽  
pp. 716-727 ◽  
Author(s):  
Reiko Kanda ◽  
◽  
Satsuki Tsuji ◽  
Hidenori Yonehara ◽  
Masami Torikoshi ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Radiation Exposure ◽  
Media Coverage ◽  
Nuclear Power ◽  
Daily Life ◽  
Internal Exposure ◽  
Dose Measurement ◽  
Nuclear Power Plant Accident ◽  
Media Reports

This study analyzes data from telephone consultations made with a research institution during approximately one year following the March 11, 2011, Fukushima, Japan, Daiichi Nuclear Power Plant accident. Data was correlated with newspaper and online media coverage. During the analysis, many calls for consultation concerned aspects of daily life such as food, clothing, and housing and to radiation exposure during the accident. As the year of study went on, the proportion of consultation on daily life changed to more technical topics, such as dose measurement, scientific knowledge, natural radiation, and Russia’s Chernobyl accident. The topic of “children” raised the greatest number of consultations over the entire period; 20–40% of callers inquiring about soil, dose measurement and internal exposure asked also about children. Media reports on the topics consulted on were few except for those on dose measurement. The proportion of consultations on children and dose measurement may have been raised due to media reports circulating at about the same time. We concluded that it is important in postaccident risk communication that information related to daily living – especially protective measures that could be taken – and to effects on children be provided efficiently and at an appropriate timing.

scholarly journals Factors Influencing Attachment toward Fukushima-gata Lagoon: Analyzing Changes in the Lifestyle of Regional Residents

Water ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1262
Author(s):  
Daiki Ogawa ◽  
Rui Fukumoto
Keyword(s):  
Water Environment ◽  
Wild Plants ◽  
Edible Wild Plants ◽  
Factors Influencing ◽  
Before And After ◽  
Local Residents ◽  
Cherry Blossom ◽  
Reclamation Project ◽  
The Government ◽  
Recreational Use

The growing shortage of human resources for managing landscape in the water environment has led to problems concerning the preservation of the landscape in Japan. For developing people have the awareness to preserve the landscape, it is important to understand the process of how regional residents develop attachment toward the water environment in their area. This paper identified factors influencing the frequency of the visits to the water environment and the attachment of residents toward the Fukushima-gata lagoon, Niigata Prefecture, Japan, as a case study, while focusing on changes in the lifestyle of the regional residents. The findings are as follows: (1) The target households frequently used Fukushima-gata lagoon for fishing and for picking edible wild plants and gathering reeds to make thatched roofs before the reclamation project was carried out by the government in Fukushima-gata lagoon. They also frequented Fukushima-gata lagoon for walking and cherry blossom viewing after the reclamation project was implemented. (2) Even the fact that the distance from the lagoon to their place of residence increased after the project did not lose their attachment to the lagoon. (3) It was suggested that the project contributed to increase the attachment of regional residents towards Fukushima-gata lagoon because of multiple factors, such as playing in the water, livelihood opportunities, and recreational use. (4) Changes in the attachment of regional residents toward Fukushima-gata lagoon before and after the reclamation project was carried out by the government corresponded to changes in the lifestyle of the local residents before and after the project.

scholarly journals Edible, medicinal wild mushrooms: A study in Estado de México

2020 ◽  
Vol 13 (10) ◽  
Author(s):  
D. Sánchez-García ◽  
C. Burrola-Aguilar ◽  
C. Zepeda-Gómez ◽  
M.E. Estrada-Zúñiga
Keyword(s):  
Exploratory Study ◽  
Scientific Evidence ◽  
Edible Mushroom ◽  
Taxonomic Identification ◽  
Medicinal Mushroom ◽  
Wild Mushrooms ◽  
Structured Interviews ◽  
Mushroom Species ◽  
Medicinal Uses ◽  
Medicinal Fungi

Objective: To identify edible mushroom species with medicinal uses in Estado de México.Design/Methodology/Approach: Based on the bibliographic review of local ethnomycological inventories, weeklymarket visits, semi-structured interviews with vendors, and the collection and taxonomic identification of mushrooms, information was gained regarding medicinal mushroom nomenclature, local knowledge and cultural importance.Results: A list of 36 edible mushroom species was compiled, which can be divided into 11 categories of use, mainly in treating digestive and circulatory illnesses.Study Limitations/Implications: This is a descriptive and exploratory study of edible mushrooms with medicinal uses, and therefore it is necessary to include more empirical and scientific evidence from other similar cases.Findings/Conclusions: There is limited knowledge on medicinal fungi species, implying that they are underexploited asa resource among local inhabitants. Lycoperdon perlatum and Lactarius indigo were cited as having the highest quantityof medicinal uses.

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