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Title:
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Modelling fluxes and bioavailability of radiocaesium and radiostrontium in freshwaters (Mid-term report ECOPRAQ project)
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Author(s):
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Published by:
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Publication date:
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ECN
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1-3-1998
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ECN report number:
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Document type:
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ECN-C--98-024
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ECN publication
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Number of pages:
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Full text:
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63
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Download PDF
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Abstract:
The acronym of this project, ECOPRAQ, stands for ECOlogical PROcesses inAQuatic systems, and refers, together with the full title of the project, to
our process- or mechanistically-based approach to modelling the fluxes and
the availability of radionuclides to the biosphere in the aquatic
environment. The global objectives of the project are the development of
mechanistic and generally applicable whole-ecosystem models. Because of their
mechanistic basis, these models are intended to enable the advancement of a
sound theoretical basis for chemical and hydrological counter-measures. The
emphasis of the project is on radiocesium. The work is broken down into six
'work packages' which focus at: (1) Development of mechanistic submodels for
the solid/liquid partitioning and (bio)availability of particle-bound
radiocesium and radiostrontium; (2) Development of mechanistic submodels for
the accumulation and elimination of radiocesium and radiostrontium by aquatic
biota; (3) Development and assessment of chemical and/or hydrological
countermeasures; (4) Development of mechanistically-based whole-ecosystem
models; (5) Model validation of sediment-water exchange and bioavailability
of radionuclides in a large-scale controlled laboratory setup and in situ;
and (6) Model validation of radionuclide scavenging by suspended particles
and uptake by aquatic plants. 43 refs.
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