Cesium accumulation by aquatic organisms at different trophic levels following an experimental release into a small reservoir

Pinder, J.E.; Hinton, Thomas G.; Taylor, Barbara; Whicker, F.W.

doi:10.1016/j.jenvrad.2010.12.003

Cited by 27 publications

(8 citation statements)

References 62 publications

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“…Furthermore, these findings have important implications for subsequent biological and ecological processes. For example, dissolved 137 Cs should be of critical importance regarding its uptake to aquatic organisms (e.g., Pinder et al, 2011). As for the samples collected in the winter of 2012, the results are difficult to explain.…”

Section: Resultsmentioning

confidence: 99%

Size distribution studies of 137Cs in river water in the Abukuma Riverine system following the Fukushima Dai-ichi Nuclear Power Plant accident

Sakaguchi

Tanaka

Iwatani

et al. 2015

Journal of Environmental Radioactivity

106

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Section: Resultsmentioning

confidence: 99%

Size distribution studies of 137Cs in river water in the Abukuma Riverine system following the Fukushima Dai-ichi Nuclear Power Plant accident

Sakaguchi

Tanaka

Iwatani

et al. 2015

Journal of Environmental Radioactivity

106

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“…However, a significant effect of this type is not plausible for several reasons. The transfer pathway of Cs into fish can be described by an uptake-loss model consisting of uptake from water by producers and further transfer by consumption to first-order and second-order consumers (Pinder et al, 2009(Pinder et al, , 2011. At all trophic levels, loss of Cs from biota occurs because of excretion, mortality, migration, and other causes.…”

Section: Nonlinearity Of Transfermentioning

confidence: 99%

Transfer of 137Cs from water to fish is not linear in two northern lakes

et al. 2012

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Empirical data on the behavior of radionuclides in the biosphere are needed for validating radioecological models. In this study, data collected from two lakes in Northern Finland were used to investigate the transfer of 137 Cs from lake water into fish during a 20-year period after the Chernobyl nuclear power plant accident. The results indicated that transfer of 137 Cs in the food chains investigated is nonlinear: the water-to-fish concentration ratios (CRs) decreased with increasing 137 Cs concentration in water. Major deviation from linearity (constant CR) commonly assumed in radioecological modeling was observed only at low 137 Cs concentrations in water. Other findings of potential importance for radioecological models were that 137 Cs concentrations were threefold higher in piscivores than in nonpiscivores and that no differences in 137 Cs uptake were found between the two piscivorous species (pike and perch) studied or between three non-piscivorous species (vendace, white fish, and roach) representing different feeding habits (planktivore, benthivore, and mixed diet).

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“…As is described below, these models provide estimates of an uptake and a loss rate parameter for fish species, and the ratio of these two parameters provides an estimate of the equilibrium C r . This model has been commonly employed to describe the dynamics of radionuclides in fish and other biota in aquatic environs (e.g., Smith et al, 2002;Pinder et al, 2011;Martinez et al, 2014).…”

Section: Assessing Model Accuracy Using Independent Measures Of Concementioning

confidence: 99%

“…The uncertainties concerning the concentrations in fish from the first 200 days and extremely small estimated µ and C r suggests questions concerning the appropriateness of this model for these data. Where this model has been successfully applied to fish and other biota involving either experimental or accidental releases of radionuclides (e.g., Smith et al, 2002;Pinder et al, 2006Pinder et al, , 2009Pinder et al, , 2011, the rapid increases in cesium concentrations in the water were < 1000-fold, and In contrast, the 137 Cs concentrations in Fukushima waters increased by a factor of > 20,000,000 from approximately 0.3 mBq L -1 (Kasamatsu and Ishikawa, 1997) to 68,000 Bq L -1 (Fig. 4), and the maximum concentrations in fish, which occurred before large-scale sampling began, increased by at least a factor of 10,000-fold from 0.3 Bq kg -1 (Kasamatsu and Ishikawa, 1997) to 3000 Bq kg -1 (Wada et al, 2013).…”

mentioning

confidence: 99%

Development and evaluation of a regression-based model to predict cesium-137 concentration ratios for saltwater fish

Pinder

Rowan

Smith

2016

Journal of Environmental Radioactivity

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Data from published studies and World Wide Web sources were combined to develop a regression model to predict (137)Cs concentration ratios for saltwater fish. Predictions were developed from 1) numeric trophic levels computed primarily from random resampling of known food items and 2) K concentrations in the saltwater for 65 samplings from 41 different species from both the Atlantic and Pacific Oceans. A number of different models were initially developed and evaluated for accuracy which was assessed as the ratios of independently measured concentration ratios to those predicted by the model. In contrast to freshwater systems, were K concentrations are highly variable and are an important factor in affecting fish concentration ratios, the less variable K concentrations in saltwater were relatively unimportant in affecting concentration ratios. As a result, the simplest model, which used only trophic level as a predictor, had comparable accuracies to more complex models that also included K concentrations. A test of model accuracy involving comparisons of 56 published concentration ratios from 51 species of marine fish to those predicted by the model indicated that 52 of the predicted concentration ratios were within a factor of 2 of the observed concentration ratios.

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Cesium accumulation by aquatic organisms at different trophic levels following an experimental release into a small reservoir

Cited by 27 publications

References 62 publications

Size distribution studies of 137Cs in river water in the Abukuma Riverine system following the Fukushima Dai-ichi Nuclear Power Plant accident

Size distribution studies of 137Cs in river water in the Abukuma Riverine system following the Fukushima Dai-ichi Nuclear Power Plant accident

Transfer of 137Cs from water to fish is not linear in two northern lakes

Development and evaluation of a regression-based model to predict cesium-137 concentration ratios for saltwater fish

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