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Measurements of 137-Cs and 90-Sr in milk is sub-programme of "radioactivity in the environment". In different sub-programs, yearly repeated sampling is performed. Data are collected with three stands: In Goteborg, Stockholm and Tärnby in AMAP area.
Measurements of gamma-radiation in the environment (from ground to cosmos). Radioactivity in Intensive Net is measured on the soil surface at 32 sites in Sweden (16 in northern Sweden). The measurements are continuous and sound the alarm if radioactivity increases. Measured is the dose rate of gamma radiation. Radioactivity in Extensive Net is concerned all municipalities in Sweden which has got one instrument for gamma radiation measurement and each county board has got two. Every seventh month they measure radioactivity at two to four predefined spots as reference measurement. Radioactivity in Air is conducted at five stations with air filter sampling and analysis of radioactivity maintained by Swedish Defence Research Agency (FOI). Out of these stations Umeå and Kiruna are located in northern Sweden.
The aim of our visit to Kristineberg was to study the stable carbon and nitrogen isotope fractionation of Meganyctiphanes norvegica in response to different food supply, and to evaluate the importance of physiological processes (assimilation and growth) in generating the new stable isotope pattern. This calibration will contribute to the evaluation of the stable isotope method as an approach to the study of food sources of animals in the field.