title: Biological proliferation of cesium-137 through the detrital food chain in a forest ecosystem in Japan.
abstract: Radionuclides, including (137)Cs, were released from the disabled Fukushima Daiichi Nuclear Power Plant and had been deposited broadly over forested areas of north-eastern Honshu Island, Japan. In the forest, (137)Cs was highly concentrated on leaf litters deposited in autumn 2010, before the accident. Monitoring of the distribution of (137)Cs among functional groups clearly showed the role of the detrital food chain as the primary channel of (137)Cs transfer to consumer organisms. Although many studies have reported the bioaccumulation (or dilution) of radioactive materials through trophic interactions, the present results highlight the importance of examining multiple possible pathways (e.g., grazing vs. detrital chains) in the proliferation of (137)Cs through food webs. These results provide important insight into the future distribution and transfer of (137)Cs within forest ecosystems.
authors.affiliation: Community Ecology Lab., Faculty of Science, Chiba University, Chiba, 263-8522, Japan.
authors.forename: Masashi
authors.initials: M
authors.lastname: Murakami
authors.affiliation: Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan.
authors.forename: Nobuhito
authors.initials: N
authors.lastname: Ohte
authors.affiliation: Community Ecology Lab., Faculty of Science, Chiba University, Chiba, 263-8522, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Suzuki
authors.affiliation: National Institute of Radiological Sciences, Chiba, 263-8555, Japan.
authors.forename: Nobuyoshi
authors.initials: N
authors.lastname: Ishii
authors.affiliation: Community Ecology Lab., Faculty of Science, Chiba University, Chiba, 263-8522, Japan.
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Igarashi
authors.affiliation: Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan.
authors.forename: Keitaro
authors.initials: K
authors.lastname: Tanoi
mesh_terms: D002588:Cesium Radioisotopes / Q000032:analysis*; D017753:Ecosystem; D020387:Food Chain; D007564:Japan; D014197:Trees
chemical_list: D002588:Cesium Radioisotopes