Veikko Lappalainen, 1965. "The Ulmus Decline in Postglacial Pollen Diagrams from Southeastern Finland", International Studies on the Quaternary: Papers Prepared on the Occasion of the VII Congress of the International Association for Quaternary Research Boulder, Colorado, 1965, H. E. Wright, Jr., David G. Frey
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This study discusses four pollen diagrams from the area of southern Lake Saimaa, southeastern Finland. In the interpretation of these diagrams, attention is drawn to the decline of the Ulmus curve at the end of the Atlantic period (zones VI and VII of the Postglacial pollen sequence). This decline is not final, and it may be only a local phenomenon, but the author believes that it reflects a general climatic change. The Ulmus decline at these sites may be contemporaneous with that described by many scientists in Scandinavia. Nothing indicates that human activity might have induced this phenomenon of forest history.