Five Flandrian lake sediment cores from Bjørnøya, northern Vestspitsbergen and Nordaustlandet were analysed for pollen, and radiocarbon dates have been obtained on several samples. The composition of the pollen rain shows apparently regular variations over the last 10,000 years, mainly in terms of long-distance/local pollen (AP/NAP) ratio.
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Hannu Hyvärinen (1970) studied this question.
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