Norway spruce postglacial recolonization of Fennoscandia

Kevin Nota, Jonatan Klaminder, Pascal Milesi, Richard Bindler, Alessandro Nobile, Tamara Steijn, Stefan Bertilsson, Brita Svensson, Shun K. Hirota, Ayumi Matsuo, Urban Gunnarsson, Heikki Seppä, Minna M. Väliranta, Barbara Wohlfarth, Yoshihisa Suyama and Laura Parducci ()
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Kevin Nota: Uppsala University
Jonatan Klaminder: Umeå University
Pascal Milesi: Uppsala University
Richard Bindler: Umeå University
Alessandro Nobile: Uppsala University
Tamara Steijn: Uppsala University
Stefan Bertilsson: Uppsala University
Brita Svensson: Uppsala University
Shun K. Hirota: Tohoku University
Ayumi Matsuo: Tohoku University
Urban Gunnarsson: Swedish Environmental Protection Agency
Heikki Seppä: University of Helsinki
Minna M. Väliranta: University of Helsinki
Barbara Wohlfarth: Stockholm University, and Bolin Centre for Climate Research
Yoshihisa Suyama: Tohoku University
Laura Parducci: Uppsala University

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract Contrasting theories exist regarding how Norway spruce (Picea abies) recolonized Fennoscandia after the last glaciation and both early Holocene establishments from western microrefugia and late Holocene colonization from the east have been postulated. Here, we show that Norway spruce was present in southern Fennoscandia as early as 14.7 ± 0.1 cal. kyr BP and that the millennia-old clonal spruce trees present today in central Sweden likely arrived with an early Holocene migration from the east. Our findings are based on ancient sedimentary DNA from multiple European sites (N = 15) combined with nuclear and mitochondrial DNA analysis of ancient clonal (N = 135) and contemporary spruce forest trees (N = 129) from central Sweden. Our other findings imply that Norway spruce was present shortly after deglaciation at the margins of the Scandinavian Ice Sheet, and support previously disputed finds of pollen in southern Sweden claiming spruce establishment during the Lateglacial.

Date: 2022
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DOI: 10.1038/s41467-022-28976-4

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