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Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: A dynamic compartmental food chain model of radiocaesium transfer to Apodemus sylvaticus in woodland ecosystems
Authors: Toal, Mark E
Copplestone, David
Johnson, Michael S
Jackson, Duncan
Jones, Steve R
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Keywords: woodland
Apodemus sylvaticus
Issue Date: 21-Feb-2001
Publisher: Elsevier
Citation: Toal ME, Copplestone D, Johnson MS, Jackson D & Jones SR (2001) A dynamic compartmental food chain model of radiocaesium transfer to Apodemus sylvaticus in woodland ecosystems, Science of the Total Environment, 267 (1-3), pp. 53-65.
Abstract: A study was undertaken to quantify the activity concentrations of 137Cs in Apodemus sylvaticus (the woodmouse) in two woodland sites, Lady Wood and Longrigg Wood, adjacent to British Nuclear Fuels Ltd. (BNFL) Sellafield, Cumbria, UK. A deterministic dynamic compartmental food chain model was also constructed to predict 137Cs activity concentration [Bq kg−1 dry weight (dw)] in A. sylvaticus on a seasonal basis given the activity concentrations in its diet. Within the coniferous woodland site (Lady Wood), significant differences were found between seasons (P less than 0.05, summer vs. autumn cohort; P less than 0.001, spring vs. autumn cohort), with an autumn peak in activity concentration (geometric mean=140×÷2.3 Bq kg−1 dw) being attributed to mycophagy. Fungal concentrations ranged from 2–3213 Bq kg−1 dw. The modelled activity concentrations fell between the confidence intervals of the observed data in four of the six seasonal cohorts sampled. Disparities between predicted and observed activity concentrations are attributed to uncertainties surrounding the fundamental feeding ecology of smal
Type: Journal Article
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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
Westlakes Scientific Consulting Ltd
Westlakes Scientific Consulting Ltd

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