Effects of experimental warming on Betula nana epidermal cell growth tested over its maximum climatological growth range ...

• Main Authors: Ercan, Fabian E Z, Mikola, J, Silfver, T H, Myller, K, Vainio, E, Słowińska, S, Słowiński, Michał, Lamentowicz, M, Blok, D, Wagner-Cremer, Frederike
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Betula nana; ecology; warming; Event label; Location; Comment; Name; Species; Treatment; Year of observation; Undulation Index; Undulation index, standard deviation; Growing degree-days, above 5°C; Open top chamber; Arctic; Greenland; Climate change; Dwarf birch
• Online Access: https://dx.doi.org/10.1594/pangaea.929090; https://doi.pangaea.de/10.1594/PANGAEA.929090

Numerous long-term, free-air plant growth facilities currently explore vegetation responses to the ongoing climate change in northern latitudes. Open top chamber (OTC) experiments as well as the experimental set-ups with active warming focus on many facets of plant growth and performance, but information on morphological alterations of plant cells is still scarce. Here we compare the effects of in-situ warming on leaf epidermal cell expansion in dwarf birch, Betula nana in Finland, Greenland, and Poland. The localities of the three in-situ warming experiments represent contrasting regions of B. nana distribution, with the sites in Finland and Greenland representing the current main distribution in low and high Arctic, respectively, and the continental site in Poland as a B. nana relict Holocene microrefugium. We quantified the epidermal cell lateral expansion by microscopic analysis of B. nana leaf cuticles. The leaves were produced in paired experimental treatment plots with either artificial warming or ...