The accumulation of in the biological compartment of forest soils

Comparative migration behaviour of 90Sr, 239+240Pu and 241Am in mineral and organic soils of France

“…a valid model for the transport of a radionuclide in soil: Condition (a): fluxes between compartments are controlled by activity in the donor compartment. This condition excludes back-transport and cycling of bioavailable radionuclide, although some field work shows that a substantial part of the soil radionuclide pool was found at the soil-root interface and in litter (Nikolova et al, 2000;Gastberger et al, 2000;Pourcelot et al, 2003).…”

Soil–fungi transfer coefficients: Importance of the location of mycelium in soil and of the differential availability of radionuclides in soil fractions

“…The first is the mechanical separation of the soil into different fractions such as the rhizosphere, the rootesoil interphase formed by fine roots and mycorrhizae, and the bulk soil (Nikolova et al, 1997;Nikolova et al, 2000), but none of these fractions consists of pure mycelium. The second assumes that the 134 Cs/ 137 Cs ratio is the same in the fruiting bodies of the fungi and in the soil layer in which the mycelium is located (Guillite et al, 1990;Ru¨hm et al, 1997) since the mycelium takes nutrients from this layer of soil.…”

No Significant Contribution of Arbuscular Mycorrhizal Fungi to Transfer of Radiocesium from Soil to Plants

“…It is well known that many ectomycorrhizal fungi accumulate radiocesium, and during the years following the Chernobyl nuclear accident in April 1986, fruiting bodies of many ectomycorrhizal fungi were found to contain high levels of radiocesium (1,10,20). In certain soils, radiocesium held in belowground fungal biomass was found to account for a large part of the soil's radiocesium content (9,26,27). This phenomenon is, however, limited to forest ecosystems, where ectomycorrhizas occur in high densities.…”