title: Radiocesium accumulation in the anuran frog, Rana tagoi tagoi, in forest ecosystems after the Fukushima Nuclear Power Plant accident.
abstract: Amphibians are key components in forest food webs. When examining radioactive contamination in anurans, it is important to understand how radiocesium transfer occurs from lower to higher trophic levels in forest ecosystems. We investigated the activity concentration of radiocesium ((134)Cs and (137)Cs) in Tago's brown frog (Rana tagoi tagoi) captured on the forest floor approximately 2.5 years after the Fukushima Nuclear Power Plant (FNPP) accident. We collected 66 R. tagoi tagoi at different distances from the FNPP. Radiocesium accumulation showed positive correlations with the air radiation dose rate and litter contamination but not with distance from the FNPP. Whole-body radioactivity showed no correlation with body mass or length. Our results suggest that differences in the available food items result in large variability in individual contamination. Contamination level monitoring in terrestrial and aquatic amphibian is necessary for clarifying the processes and mechanisms of radiocesium transfer through forest food webs.
authors: Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8521, Japan. Electronic address: takahara@hiroshima-u.ac.jp.
authors: Teruhiko
authors: T
authors: Takahara
authors: Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan.
authors: Satoru
authors: S
authors: Endo
authors: Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8521, Japan.
authors: Momo
authors: M
authors: Takada
authors: Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8521, Japan.
authors: Yurika
authors: Y
authors: Oba
authors: Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8521, Japan.
authors: Wim Ikbal
authors: WI
authors: Nursal
authors: Graduate School of International Development and Cooperation, Hiroshima University, 1-5-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8529, Japan.
authors: Takeshi
authors: T
authors: Igawa
authors: Institute for Sustainable Sciences and Development, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan.
authors: Hideyuki
authors: H
authors: Doi
authors: Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8521, Japan.
authors: Toshihiro
authors: T
authors: Yamada
authors: Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8521, Japan.
authors: Toshinori
authors: T
authors: Okuda
mesh_terms: D000818:Animals; D002588:Cesium Radioisotopes / Q000032:analysis / Q000378:metabolism*; D017753:Ecosystem; D065928:Forests; D062406:Fukushima Nuclear Accident; D055848:Nuclear Power Plants; D011834:Radiation Monitoring; D011848:Radioactive Pollutants / Q000378:metabolism*; D011898:Ranidae / Q000378:metabolism*
chemical_list: D002588:Cesium Radioisotopes; D011848:Radioactive Pollutants
keywords: Contamination; FNPP; Forest floor; Radioactivity; Tago's brown frog