Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Trees and shrubs growing on the right side of the Oder river in Szczecin.

Abstract

Based on a survey done in 1986-89, some 485 species and varieties of woody species were recorded at this site in Szczecin, Poland. Cultivars amounted to 36% of the species. Of those remaining, 12.3% were of European origin, 30% indigenous to both Europe and countries outside Europe, 26.4% from Asia (many from China and Japan), 0.3% (Pernettya mucronata) from South America, 22.9% from North America and 27.1% indigenous to Poland, 8.1% were hybrids. In comparison with an earlier study made on the left side of the Oder river (where 822 species and varieties of woody plants were recorded), the right side of the river was poorer in woody species, although it had some species not found on the left side (e.g. Abies grandis, Sequoiadendron giganteum, Decaisnea fargesii and Liquidambar orientalis). Many changes in species composition have been observed over the last few years.