Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/7393
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Quantifying Cs-137 aggregated transfer coefficients in a semi-natural woodland ecosystem adjacent to a nuclear reprocessing facility
Authors: Toal, Mark E
Copplestone, David
Johnson, Michael S
Jackson, Duncan
Jones, Steve R
Contact Email: david.copplestone@stir.ac.uk
Keywords: radiocaesium
fungi
invertebrates
transfer factors dose
Issue Date: 2002
Publisher: Elsevier
Citation: Toal ME, Copplestone D, Johnson MS, Jackson D & Jones SR (2002) Quantifying Cs- 137 aggregated transfer coefficients in a semi-natural woodland ecosystem adjacent to a nuclear reprocessing facility, Journal of Environmental Radioactivity, 63 (1), pp. 85-103.
Abstract: Radiocaesium (137Cs) activity concentrations and aggregated transfer factors (Tag values) were calculated for vascular plants, fungal fruiting bodies and invertebrates in a semi-natural Picea sitchensis woodland (Lady Wood) adjacent to the British Nuclear Fuels plc. reprocessing facility at Sellafield, Cumbria, UK. The Tag values for vascular plants ranged from 7.1×10−4–1.9×10−2 m2 kg−1, the maximum value being for Pteridium aquilinum. Fungal fruiting bodies had higher Tag values (1.9×10−3–1.8×10−1 m2 kg−1) than vascular plants, with a maximum value for Mycena galericulata. None of the activity concentrations for edible foodstuffs collected within this study (fungi and berries) exceeded the EC recommended limits of 137Cs in foodstuffs grown within the UK. The invertebrate community sampled during the study had Tag values ranging from 3.4×10−4 to 1.3×10−2 m2 kg−1. There were no systematic differences in 137Cs activity concentration between invertebrate guilds, or between seasonal cohorts within guilds. The invertebrates in Lady Wood were exposed to a dose from 137Cs (internal gamma + beta and external gamma) ranging between 4.37×10−4 and 6.40×10−4 mGy day−1. Including dose from radionuclides other than 137Cs and accounting for uncertainties due to the relative biological effectiveness of differing radionuclides could increase total dose by approximately an order of magnitude. These dose rates are at least three orders of magnitude lower than the 1 mGy d−1 level at which harm may be caused to terrestrial biota, hence the risk to the invertebrate community from the effects of i
Type: Journal Article
URI: http://hdl.handle.net/1893/7393
DOI Link: http://dx.doi.org/10.1016/S0265-931X(02)00018-8
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: University of Liverpool
Biological and Environmental Sciences
University of Liverpool
Enviros Quantisci
Westlakes Scientific Consulting Ltd

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