Time-dependence of the radiocaesium contamination of roe deer: measurement and modelling. (Peer-Reviewed Article) - Detailansicht

Grunddaten

Titel der Arbeit (title)	Time-dependence of the radiocaesium contamination of roe deer: measurement and modelling.
Titel der Zeitschrift bzw. Zeitung	Journal of Environmental Radioactivity
Erscheinungsjahr	2001
Verlag (publisher)	Elsevier Science Ltd.
Seitenzahl (pages)	5-27
Band (volume)	Volume 55, Issue 1
Publikationsart	Peer-Reviewed Article

Inhalt
Abstract	In spruce forest and peat bog, the migration of 137Cs from soil to plants, fungi, roe deer and consumers has been surveyed. In spruce forest the 137Cs activity concentration in roe deer decreases slowly with time and has superimposed periodic maxima in autumn which are correlated with the mushroom season. The decrease with time can be described by an effective half-life of 3.5 yr caused by a fraction of the 137Cs in the soil becoming unavailable for green grazing plants with time. The additional transfer of 137Cs into roe deer meat during the mushroom season depends on precipitation in July, August and September which also determines the yield of fungi in autumn. Our model confirms the assumption that fungi also have access to a fraction of the 137Cs in the soil which is unavailable for green plants. On peat bog the 137Cs activity concentration in roe deer is higher than in spruce forest and its effective half-life is about 17 yr, due to reversible binding of 137Cs to organic matter in the peat bog.

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