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Future radioecological studies in the Arctic 



More information is particular needed on the radioactive contamination of the Arctic 

 from previous nuclear activities in the former USSR and the following questions may be 

 asked: 



1. How much radioactivity was deposited locally and regionally in the Arctic from 

 the Atmospheric test series during the fifties and early sixties at Novaya Zemlya? 



2. What has the runoff of radioactive substances with the Siberian rivers from 

 nuclear activities in the former USSR been? In particular how much activity has 

 been transported by the Ob river system to the Arctic biassin? 



3. What are the radioecological impact of the radwaste dumped at Novaya Zemlya? 

 Will in particular the disposed nuclear ship reactors influence the levels of 

 marine radioactivity in the Artie? 



4. What is the inventories of '"Sr, '''Cs and plutonium in the Arctic Ocean? Are the 

 levels higher than expected or have the measurements carried out so far been 

 too few for a reliable estimate? 



5. Are the Arctic Bassin and the Siberian rivers potential sources of contamination 

 of important fishing areas in the North Atlantic region and what would then be 

 radioecological impact? 



The ecological halflives of '"Sr, ^^Cs and transuranic elements should be determined in 

 marine as well as terrestrial ecosystems in the Arctic in order to evaluate the radioeco- 

 logical consequences of radioactive contamination in this part of the biosphere. 



