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University of Gdańsk, Faculty of Biology, Department of Plant Ecology, Laboratory of Palaeoecology and Archaeobotany, Wita Stwosza 59, 80-308 Gdańsk, Poland
University of Helsinki, Faculty of Biological and Environmental Sciences, Ecosystems and Environment Research Programme, Niemenkatu 73, 15140 Lahti, Finland
University of Helsinki, Faculty of Biological and Environmental Sciences, Ecosystems and Environment Research Programme, Niemenkatu 73, 15140 Lahti, Finland