Seasonality of 137Cs in roe deer from Austria and Germany

Fielitz, U.; Klemt, E.; Strebl, F.; Tataruch, Frieda; Zibold, G.

doi:10.1016/j.jenvrad.2008.12.005

Cited by 18 publications

(13 citation statements)

References 10 publications

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“…Thus, fungal activity is likely to contribute substantially to the long-term retention of radiocesium in the organic layers of forest soil by recycling and retaining radiocesium between fungal mycelia and soil (Muramatsu and Yoshida 1997 ;Steiner et al 2002 ;Muramatsu 1994 , 1996 ). In fact, some examples have been Cs radioactivity in mushrooms persisted for a long period in forests and was transferred to animals, whereas that in plants had short ecological half-lives (e.g., 3-3.5 years) (Fielitz et al 2009 ;Kiefer et al 1996 ;Zibold et al 2001 ).…”

Section: Relationship Between Mushroom Contamination and Radiocesium mentioning

confidence: 99%

Mushrooms: Radioactive Contamination of Widespread Mushrooms in Japan

Yamada

2013

Agricultural Implications of the Fukushima Nuclear Accident

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High concentrations of radionuclide contamination of wild mushrooms occurred near the Fukushima Daiichi nuclear power plant and along the path of radioactive plumes. This is a serious problem for the forest ecosystem and commercial wild mushroom production. Radioactivity in wild mushrooms collected from low-level contamination forest areas throughout Japan was measured approximately 6 months after the accident. In general, the radioactivity in mushrooms did not exceed those in the neighboring forest litter. However, further accumulation of 137 Cs is expected in mushrooms; therefore, continuous monitoring is necessary even in low-contamination areas. We also found that residual 137 Cs radioactivity due to nuclear weapons tests, mainly in 1950s, besides fallout from the Fukushima nuclear accident still remained in soil and was accumulated by mushrooms.

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Section: Relationship Between Mushroom Contamination and Radiocesium mentioning

confidence: 99%

Mushrooms: Radioactive Contamination of Widespread Mushrooms in Japan

Yamada

2013

Agricultural Implications of the Fukushima Nuclear Accident

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“…In a previous study examining the effects of the Chernobyl Nuclear Power Station accident on wild animals, variations in 137 Cs activity concentrations between individuals and between years in the same wild animal species were shown to be strongly affected by biological factors such as changes in food habits and movement patterns extending until about 30 years after the accident [ 15 ]. In the wild animals in Europe, 137 Cs activity concentrations were shown to be elevated in seasons when the animals ate highly contaminated food items [ 8 , 16 , 17 ]. Thus, understanding seasonal variation in radionuclide concentrations in wild animals is important to determine the relationship between wild animal ecological traits and radionuclide concentrations.…”

Section: Introductionmentioning

confidence: 99%

Seasonal variation of Cesium-137 concentration in Asian black bear (Ursus thibetanus) and wild boar (Sus scrofa) in Fukushima Prefecture, Japan

2018

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To elucidate and reduce the risk of radionuclide contamination in wildlife caused by the Tokyo Electric Power Company Fukushima Dai-ichi Nuclear Power Station accident, it is important to understand radionuclide variations in the wild animal population. Here, we used environmental monitoring data and muscle samples collected from Asian black bear (Ursus thibetanus) and wild boar (Sus scrofa) from May 2011 to March 2016 to examine seasonal variation in radiocesium (137Cs) concentrations in muscle tissues (hereafter, muscle 137Cs) of these important game species in Fukushima Prefecture. We measured muscle 137Cs of bears and wild boars killed by hunters or in animal control culls. First, using a linear mixed model (LMM), we tested for a positive relationship between muscle 137Cs and 137Cs in the soil at the site of capture (hereafter, soil 137Cs) estimated from a soil 137Cs deposition map produced by the Japan Atomic Energy Agency. In the LMM, muscle 137Cs was positively related to estimated soil 137Cs, which corroborates the results of previous studies. The LMM regression coefficients differed between the two species, with wild boar muscle 137Cs being higher than that of bears sampled at the same locations. We then employed a generalized additive mixed model (GAMM) to estimate seasonal variation in the muscle 137Cs of the target species. GAMM showed that muscle 137Cs varied seasonally and that this seasonal variation also differed between the two species. In bears, muscle 137Cs decreased from spring to early autumn, before increasing in winter. Wild boar muscle 137Cs remained low during spring and summer and was high during autumn and early spring. These patterns are likely influenced by differences in diet, habitat use, and physiology between these two species.

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“…Therefore, wild animals inhabiting the same forest have very different levels of 137 Cs meat contamination. For instance, in several federal states of Germany as Bavaria (Fielitz, 2005;Fielitz et al, 2009;Hecht, 2001;Steiner and Fielitz, 2008), Rheinland-Pfalz (Hohmann and Huckschlag, 2005), and Baden-Wü rttemberg (Zibold et al, 2001), and, additionally, in Austrian forests (Strebl and Tataruch, 2007) the 137 Cs activity concentration in red deer (Cervus elaphus) and roe deer (Capreolus capreolus), except for the mushroom season in autumn, is rather low and continuously decreasing with time, whereas the contamination of wild boar (Sus scrofa) is remaining on a rather high level and exhibits a much slower decrease or is even constant over time. This could be explained by the differences in habitat and dietary habits of these animals.…”

Section: Introductionmentioning

confidence: 99%