An international model validation exercise on radionuclide transfer and doses to freshwater biota

Yankovich, T.L.; Batlle, J. Vives i; Vives-Lynch, S.; Beresford, N.A.; Barnett, C.L.; Beaugelin­-Seiller, K.; Brown, Justin; Cheng, Jing-Jy; Copplestone, David; Heling, R.; Hosseini, A.; Howard, B.J.; Kamboj, S.; Крышев, А. И.; Nedveckaitė, T.; Smith, J.T.; Wood, Michael D.

doi:10.1088/0952-4746/30/2/s06

Cited by 44 publications

(26 citation statements)

References 39 publications

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“…Smith et al (2000) demonstrate approximately two-orders of magnitude variation in CR wo-water explained by water K concentration) with water pH and Ca concentration also being suggested to influence Cs transfer (Smith et al, 2002). Consequently, there is often large variation between the outputs of models using CR wo values to predict activity concentrations in wildlife (Beresford et al, 2008c;Yankovich et al, 2010;Johansen et al, 2012) and the approach is open to criticism as being too simplistic (ICRP 2009). However, pragmatically the CR wo approach is easy to apply and has the most comprehensive datasets available, and hence it continues to be recommended in international compilations (Howard et al, 2013;ICRP, 2009).…”

Section: Effect Of Other Variables On Cr Wo-watermentioning

confidence: 99%

A new approach to predicting environmental transfer of radionuclides to wildlife: A demonstration for freshwater fish and caesium

Beresford

Yankovich

Fesenko

et al. 2013

Science of The Total Environment

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The NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. AbstractThe application of the concentration ratio (CR) to predict radionuclide activity concentrations in wildlife from those in soil or water has become the widely accepted approach for environmental assessments. Recently both the ICRP and IAEA have produced compilations of CR values for application in environmental assessment. However, the CR approach has many limitations most notably that transfer of most radionuclides is largely determined by site-specific factors (e.g. water or soil chemistry). Furthermore, there are few, if any, values for many radionuclide-organism combinations. In this paper we propose an alternative approach and, as an example, demonstrate and test this for caesium and freshwater fish. Using a Residual Maximum Likelihood (REML) mixed-model regression we analysed a dataset comprising 597 entries for 53 freshwater fish species from 67 sites. The REML analysis generated a mean value for each species on a common scale after REML adjustment taking account of the effect of the inter-site variation. Using an independent dataset, we subsequently test the hypothesis that the REML model outputs can be used to predict radionuclide, in this case radiocaesium, activity concentrations in unknown species from the results of a species which has been sampled at a specific site. The outputs of the REML analysis accurately predicted 137 Cs activity concentrations in different species of fish from 27 Finnish lakes; these data had not been used in our initial analyses. We recommend that this alternative approach be further investigated for other radionuclides and ecosystems.

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Section: Effect Of Other Variables On Cr Wo-watermentioning

confidence: 99%

A new approach to predicting environmental transfer of radionuclides to wildlife: A demonstration for freshwater fish and caesium

Beresford

Yankovich

Fesenko

et al. 2013

Science of The Total Environment

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“…Wood et al, 2009a;Beresford et al, 2010;Yankovich et al, 2010b;Johansen et al, 2012). Beresford and Wood (2014) evaluated to what extent the Beresford and Vives i Batlle (2013) model could be applied to reptiles.…”

Section: Application To Reptilesmentioning

confidence: 99%

Making the most of what we have: application of extrapolation approaches in radioecological wildlife transfer models

Beresford

Batlle

Yankovich

et al. 2016

Journal of Environmental Radioactivity

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We will never have data to populate all of the potential radioecological modelling parameters required for wildlife assessments. Therefore, we need robust extrapolation approaches which allow us to make best use of our available knowledge. This paper reviews and, in some cases, develops, tests and validates some of the suggested extrapolation approaches. The concentration ratio (CRproduct-diet or CRwo-diet) is shown to be a generic (trans-species) parameter which should enable the more abundant data for farm animals to be applied to wild species. An allometric model for predicting the biological half-life of radionuclides in vertebrates is further tested and generally shown to perform acceptably. However, to fully exploit allometry we need to understand why some elements do not scale to expected values. For aquatic ecosystems, the relationship between log10(a) (a parameter from the allometric relationship for the organism-water concentration ratio) and log(Kd) presents a potential opportunity to estimate concentration ratios using Kd values. An alternative approach to the CRwo-media model proposed for estimating the transfer of radionuclides to freshwater fish is used to satisfactorily predict activity concentrations in fish of different species from three lakes. We recommend that this approach (REML modelling) be further investigated and developed for other radionuclides and across a wider range of organisms and ecosystems. Ecological stoichiometry shows potential as an extrapolation method in radioecology, either from one element to another or from one species to another. Although some of the approaches considered require further development and testing, we demonstrate the potential to significantly improve predictions of radionuclide transfer to wildlife by making better use of available data.

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“…LIETDOS-BIO model and computer code for biota exposure dose rate calculation was validated during IAEA EMRAS (Environmental Modeling for Radiation Safety) Working Group designated for model validation for biota dose assessment (Vives-i-Batlle et al, 2007;Beresford et al, 2008a;Beresford et al, 2008b;Beresford et al, 2009;Yankovich et al, 2010 …”

Section: Site-specific Lietdos-bio Computer Code Designed For Non-hummentioning

confidence: 99%

Radiological and Environmental Effects in Ignalina Nuclear Power Plant Cooling Pond – Lake Druksiai: From Plant put in Operation to Shut Down Period of Time

Nedveckaitė¹,

Marčiulionienė²,

Mažeika³

et al. 2011

Nuclear Power - Operation, Safety and Environment

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An international model validation exercise on radionuclide transfer and doses to freshwater biota

Cited by 44 publications

References 39 publications

A new approach to predicting environmental transfer of radionuclides to wildlife: A demonstration for freshwater fish and caesium

A new approach to predicting environmental transfer of radionuclides to wildlife: A demonstration for freshwater fish and caesium

Making the most of what we have: application of extrapolation approaches in radioecological wildlife transfer models

Radiological and Environmental Effects in Ignalina Nuclear Power Plant Cooling Pond – Lake Druksiai: From Plant put in Operation to Shut Down Period of Time

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