Population genetics analyses of larch tree stands in north-central Siberia ...

• Published in: International Journal of Applied Earth Observation and Geoinformation
• Main Authors: Kruse, Stefan, Epp, Laura Saskia, Wieczorek, Mareike, Pestryakova, Luidmila A, Stoof-Leichsenring, Kathleen Rosmarie, Herzschuh, Ulrike
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2018
• Subjects: Polar Terrestrial Environmental Systems @ AWI AWI_Envi; Global warming; Taymyr; Taymyr Peninsula; Tundra; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.885765; https://doi.pangaea.de/10.1594/PANGAEA.885765

Arctic treelines are facing a strong temperature increase as a result of recent global warming, causing possible changes in forest extent, which will alter vegetation-climate feedbacks. However, the mode and strength of the response is rather unclear, as potential changes are happening in areas that are very remote and difficult to access, and empirical data are still largely lacking.Here, we assessed the current population structure and genetic differentiation of Larix Mill. tree stands within the northernmost latitudinal treeline reaching ~72° N in the southern lowlands of the Taymyr Peninsula (~100° E). We sampled 743 individuals belonging to different height classes (seedlings, saplings, trees) at eleven locations along a gradient from 'single tree' tundra over 'forest line' to 'dense forest' stands and conducted investigations applying eight highly polymorphic nuclear microsatellites.Results suggest a high diversity within subpopulations (HE=0.826-0.893), coupled, however, with heterozygote deficits in ... : Supplement to: Kruse, Stefan; Epp, Laura Saskia; Wieczorek, Mareike; Pestryakova, Luidmila A; Stoof-Leichsenring, Kathleen Rosmarie; Herzschuh, Ulrike (2018): High gene flow and complex treeline dynamics of Larix Mill. stands on the Taymyr Peninsula (north-central Siberia) revealed by nuclear microsatellites. Tree Genetics & Genomes, 14(2) ...