A dynamical approach for the uptake of radionuclides in marine organisms for the POSEIDON model system

Heling, R.; Koziy, L.; Bulgakov, V. G.

doi:10.1051/radiopro/2002211

Cited by 22 publications

(21 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The module for the uptake of radionuclides by marine organisms (BURN) is dynamic and based on prey-predator -relations. This avoids the use of concentration factors (CF) from the literature, which are often conservative, and gives realistic concentrations of radionuclides in biota [13,14]. The module is salinity driven for caesium and strontium uptake [14].…”

Section: Poseidon-r (Modeller 8)mentioning

confidence: 99%

“…These models can be simply calculated in a spreadsheet (modeller 7 used a spreadsheet according to the models in [4]) or by using an available software package. The software packages used in this project are: PC-CREAM (98 and 08 versions), IMPACT, CROM, SYMBIOSE, CLRP, POSEIDON (POSEIDON-R (RODOS)), and RDEMO [3,4,[9][10][11][12][13][14][15]. Below are brief descriptions of some of these software packages.…”

Section: Software Packages and Models Used For Scenario A By The Modementioning

confidence: 99%

See 1 more Smart Citation

Reference methodologies for radioactive controlled discharges an activity within the IAEA’s program environmental modelling for radiation safety II (EMRAS II)

et al. 2011

Self Cite

View full text Add to dashboard Cite

Abstract. In January 2009, the IAEA EMRAS II (Environmental Modelling for Radiation Safety II) program was launched. The goal of the program is to develop, compare and test models for the assessment of radiological impacts to the public and the environment due to radionuclides being released or already existing in the environment; to help countries build and harmonize their capabilities; and to model the movement of radionuclides in the environment. Within EMRAS II, nine working groups are active; this paper will focus on the activities of Working Group 1: Reference Methodologies for Controlling Discharges of Routine Releases. Within this working group environmental transfer and dose assessment models are tested under different scenarios by participating countries and the results compared. This process allows each participating country to identify characteristics of their models that need to be refined. The goal of this working group is to identify reference methodologies for the assessment of exposures to the public due to routine discharges of radionuclides to the terrestrial and aquatic environments. Several different models are being applied to estimate the transfer of radionuclides in the environment for various scenarios. The first phase of the project involves a scenario of nuclear power reactor with a coastal location which routinely (continuously) discharges 60 Co, 85 Kr, 131 I, and 137 Cs to the atmosphere and 60 Co, 137 Cs, and 90 Sr to the marine environment. In this scenario many of the parameters and characteristics of the representative group were given to the modellers and cannot be altered. Various models have been used by the different participants in this inter-comparison (PC-CREAM, CROM, IMPACT, CLRP POSEIDON, SYMBIOSE and others). This first scenario is to enable a comparison of the radionuclide transport and dose modelling. These scenarios will facilitate the development of reference methodologies for controlled discharges.

show abstract

Section: Poseidon-r (Modeller 8)mentioning

confidence: 99%

Section: Software Packages and Models Used For Scenario A By The Modementioning

confidence: 99%

Reference methodologies for radioactive controlled discharges an activity within the IAEA’s program environmental modelling for radiation safety II (EMRAS II)

et al. 2011

Self Cite

View full text Add to dashboard Cite

show abstract

“…Other dynamic modelling methodologies have been used to study the transfer of FDNPP radionuclides to marine biota (Heling et al, 2002;Keum et al, 2015;Kryshev et al, 2012;Maderich et al, 2014;Psaltaki et al, 2013 exceeding the Japanese radioactivity in food limit of 100 Bq kg -1 (Buesseler, 2012;Buesseler and Aoyama, 2012;Wada et al, 2013). However, the activity concentrations in marine products in (Wada et al, 2016).…”

Section: State Of Knowledge On the Impact Of The Fdnpp Accident On Thmentioning

confidence: 99%

Marine radioecology after the Fukushima Dai-ichi nuclear accident: Are we better positioned to understand the impact of radionuclides in marine ecosystems?

Batlle

Aoyama

Bradshaw

et al. 2018

Science of The Total Environment

View full text Add to dashboard Cite

This paper focuses on how a community of researchers under the COMET (CO-ordination and iMplementation of a pan European projecT for radioecology) project has improved the capacity of marine radioecology to understand at the process level the behaviour of radionuclides in the marine environment, uptake by organisms and the resulting doses after the Fukushima Dai-ichi nuclear accident occurred in 2011. We present new radioecological understanding of the processes involved, such as the interaction of waterborne radionuclides with suspended particles and sediments or the biological uptake and turnover of radionuclides, which have been better quantified and mathematically described.We demonstrate that biokinetic models can better represent radionuclide transfer to biota in nonequilibrium situations, bringing more realism to predictions, especially when combining physical, chemical and biological interactions that occur in such an open and dynamic environment as the ocean. As a result, we are readier now than we were before the FDNPP accident in terms of having models that can be applied to dynamic situations.The paper concludes with our vision for marine radioecology as a fundamental research discipline and we present a strategy for our discipline at the European and international levels. The lessons learned 2 are presented along with their possible applicability to assess/reduce the environmental consequences of future accidents to the marine environment and guidance for future research, as well as to assure sustainability of marine radioecology in Europe and globally. This guidance necessarily reflects on why and where further research funding is needed, signalling the way for future investigations.3

show abstract

“…The dynamical uptake model BURN for biota had been implemented earlier into the POSEIDON system to substitute the Concentration Factors (CF) approach -for aquatic organisms in seas and coastal regions, to assess the activity concentration of radionuclides in biota after accidental releases [2,3]. The reason is that in the case of accidental releases, there is no equilibrium between water and biota, especially in small coastal compartments and (parts of) estuaries.…”

Section: Introductionmentioning

confidence: 99%

“…BURN is then applied to assess the radionuclide activity concentration in the various trophic levels. The model BURN was improved by submodels to govern the uptake of radioceasium and radiostrontium [3] by phytoplankton -for Cs-137 and Sr-90, and in gills, for Sr-90, on the basis of the presence of competitive ions potassium (K + ) and calcium (Ca 2+ ) in the seawater respectively. For the gills, the uptake rate for Cs-137 is not modified for the marine environment, since it has a relatively minor contribution to the uptake of Cs-137 in marine fish in comparison with Sr-90, which shows hardly biomagnification.…”

Section: Introductionmentioning

confidence: 99%

The validation of the dynamic food chain model BURN-POSEIDON on Cs-137 and Sr-90 data of the Dnieper-Bug estuary, Ukraine

Heling

2011

Radioprotection

Self Cite

View full text Add to dashboard Cite

Abstract. The uptake of radioceasium and radiostrontium in biota in dose assessment models is mostly estimated on the basis of Concentration Factors (CF). For accidental releases, the dynamical foodweb model BURN has been implemented in the coastal model POSEIDON (part of the Decision Support System RODOS). BURN can be applied on water bodies with different salinity levels, since in the model the uptake of radioceasium and radiostrontium in phytoplankton is governed by potassium and calcium in the water, which are calculated via the easier-to-obtain parameter salinity. Recently a dataset on radiocaesium and radiostrontium has been collected for various aquatic organisms in the Dnieper-Bug Estuary (DBE) in Ukraine, which enabled model validation with BURN. Considering the limitation of compartment models and the fact BURN is a predictive model, with fixed model parameters, the model results are within a reasonable range with the measurement data. Besides comparison with measurement data, the model calculations were also used to derive values for CF and compared with literature, which gave reasonable results for Cs-137 in fish and molluscs. For Sr-90 however, the calculated values exceeded the levels given in literature, since equilibrium between radionuclides in biota and water is not reached. Longer time periods for the radionuclide flux into the DBE, both from the Dnieper and the Black Sea are required to obtain high quality model results for the years after 1989.

show abstract

A dynamical approach for the uptake of radionuclides in marine organisms for the POSEIDON model system

Cited by 22 publications

References 0 publications

Reference methodologies for radioactive controlled discharges an activity within the IAEA’s program environmental modelling for radiation safety II (EMRAS II)

Reference methodologies for radioactive controlled discharges an activity within the IAEA’s program environmental modelling for radiation safety II (EMRAS II)

Marine radioecology after the Fukushima Dai-ichi nuclear accident: Are we better positioned to understand the impact of radionuclides in marine ecosystems?

The validation of the dynamic food chain model BURN-POSEIDON on Cs-137 and Sr-90 data of the Dnieper-Bug estuary, Ukraine

Contact Info

Product

Resources

About