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32<br />

I. Kowarik and M. von der Lippe<br />

a<br />

b<br />

Fig. 3.1a, b Temporal sequence of a woody plant introductions from different donor<br />

areas to Central Europe and of b successive invasions by species from the same donor<br />

areas in Brandenburg, Germany, reflecting the history of infra- and intercontinental<br />

introductions at a regional scale. The inserted columns in a show absolute numbers of<br />

introductions from A parts of Europe excluding the Mediterranean, B the Mediterranean,<br />

C western Asia, D North America, E Central Asia and F East Asia. The cumulative<br />

curves illustrate the relative importance of introductions from different donor areas for

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