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In this study, we examine the pattern of occurrence of Impatiens parviflora in Central European oak forests over time and its ecological requirements within these types of communities. Research was based on phytosociological data collected in 3776 relevés. A modified TWINSPAN algorithm were used to distinguish the groups of oak forests. The ecological preferences of the I. parviflora and studied communities...
Invasive plants are considered to be a major threat to biodiversity, both at the local and global scale. Up to now there have been only occasional activities undertaken in Poland to solve the problem. They were supported by non-governmental organizations and conducted on a local scale. One of such organizations is the Lower Silesian Branch of the Polish Ecological Club. In 2007 the organization initiated...
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