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THE IMPACT OF SHIPPING ON THE INVASION OF ALIEN PLANTS TO NORWAY
Vol. 2, No. 2, World Shipping (1978), pp. 123-132
Published by: Springer
Stable URL: http://www.jstor.org/stable/41142087
Page Count: 10
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Important agencies responsible for the invasion of alien plants to Norway by means of shipping were ballast thrown ashore from sailing ships and contaminants in imported grain. Most ballast-plants were casuals, which disappeared when the ballast traffic ceased at the time of World War I. Changes in the origin of imported grain are reflected in the grain mill flora.
GeoJournal © 1978 Springer