The influence of fungi on the long-term behaviour of radiocaesium in Norwegian sheep
| Autor: | H Mehli, Lavrans Skuterud |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Male
Environmental Engineering Animal feed Biology Pasture Models Biological Animal science Grazing Activity concentration Environmental Chemistry Animals Waste Management and Disposal Food Contamination Radioactive geography geography.geographical_feature_category Sheep Ecology Norway Fungi Vegetation Pollution Animal Feed Cesium Radioisotopes Regression Analysis Female Seasons Environmental Monitoring Half-Life |
| Zdroj: | The Science of the total environment. 224(1-3) |
| ISSN: | 0048-9697 |
| Popis: | Results from 11 years of live monitoring of sheep from a grazing area in Norway formed the basis for a study of the importance of ingested fungal fruit bodies in determining radiocaesium activity concentrations in sheep grazing freely on mountain pasture. The 137 Cs activity concentration due to ingested vegetation decreased with an estimated effective ecological half-life of 7.0±2.6 years. The contribution from ingested fungal fruit bodies to radiocaesium activity concentrations in the sheep was up to 75–85% in the years when fruit bodies were most abundant. The study demonstrates that using a simple exponential function in assessments of long-term consequences of radiocaesium fallout for grazing sheep may be inappropriate. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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