Field and simulation data for larches growing in the Taimyr treeline ecotone ...

• Main Authors: Wieczorek, Mareike, Kruse, Stefan, Epp, Laura Saskia, Kolmogorov, Alexei, Nikolaev, Anatoly N, Heinrich, Ingo, Jeltsch, Florian, Pestryakova, Luidmila A, Zibulski, Romy, Herzschuh, Ulrike
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2017
• Subjects: Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn; Polar Terrestrial Environmental Systems @ AWI AWI_Envi; Climate change; permafrost; Taimyr; Tundra; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.874615; https://doi.pangaea.de/10.1594/PANGAEA.874615

Arctic and alpine treelines worldwide differ in their reactions to climate change. A northward advance of or densification within the treeline ecotone will likely influence climate-vegetation feedback mechanisms. In our study, which was conducted in the Taimyr Depression in the North Siberian Lowlands, w present a combined field- and model-based approach helping us to better understand the population processes involved in the responses of the whole treeline ecotone, spanning from closed forest to single-tree tundra, to climate warming. Using information on stand structure, tree age, and seed quality and quantity from seven sites, we investigate effects of intra-specific competition and seed availability on the specific impact of recent climate warming on larch stands. Field data show that tree density is highest in the forest-tundra, and average tree size decreases from closed forest to single-tree tundra. Age-structure analyses indicate that the trees in the closed forest and forest-tundra have been present ... : Supplement to: Wieczorek, Mareike; Kruse, Stefan; Epp, Laura Saskia; Kolmogorov, Alexei; Nikolaev, Anatoly N; Heinrich, Ingo; Jeltsch, Florian; Pestryakova, Luidmila A; Zibulski, Romy; Herzschuh, Ulrike (2017): Dissimilar responses of larch stands in northern Siberia to increasing temperatures-a field and simulation based study. Ecology, 98(9), 2343-2355 ...