Investigations on the radiocesium contamination of wild boars

The examination of nearly 500 samples showed, that in certain circumstances the radiocesium-contamination of wild boars is depending on the supply with seeds of oaks and beeches. If this regionally very important nourishment is missing, the boars are forced to gain feed by rooting the upper soil-layers. The radiocesium-contamination of soil in forests will decrease very slowly, because cesium remains nearly completly in the upper layers. So diminution is given mainly by the halflife of Cesium-137 (30 years). In principle the result of this study is transferable to all (noxious) components which are existing in those soil-layers. The dependance between acorn-mast and the contamination of wild boars requires appropriate care, especially if trend-studies are carried out.