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Introductions of invasive species increase competitive interactions in a community proportionally to the similarity between the ecological niches of invasive and native species. Food represents one of the most important resources influencing competition, and differences in the trophic niche of native and invasive species can affect their ability to coexist. Moreover, in sympatric native and invasive...
Solidago species are one of the most widespread invasive species in Europe. In Central Europe, vegetation dominated by alien goldenrods can occupy vast areas. Their presence causes a decrease in the biodiversity level of numerous groups of organisms (plants, birds and insects). Alien Solidago also disturb biogeochemical cycles, as well as the primary productivity in infested ecosystems. In Central...
River valleys are areas of transition between aquatic and terrestrial communities, with complex biological structure. As ecotones they have high biodiversity as a result of the occurrence of species with different requirements according to soil moisture. They create ecological corridors, allowing migration of the organisms in human disturbed landscape. With these migration routes, species of foreign...
In Lower Silesia, three goldenrod species introduced from North America are found: Solidago gigantea Aiton (late goldenrod), S. canadensis L. (Canadian goldenrod) and S. graminifolia (L.) Elliott. (grass-leaved goldenrod). A native species is also found: Solidago virgaurea L. (common goldenrod). Distribution of these species was surveyed using sampling plots in a 10x10 km grid. The impact of increasing...
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