The Ballast–Plants, a Moribund Element in the Norwegian Flora ?
- 1 January 1968
- journal article
- research article
- Published by Taylor & Francis in Norsk Geografisk Tidsskrift - Norwegian Journal of Geography
- Vol. 22 (4) , 245-251
- https://doi.org/10.1080/00291956808551870
Abstract
Ouren, T. 1968. The Ballast-Plants, a Moribund Element in the Norwegian Flora? Norsk geogr. Tidsskr. 22, 245–251. The fate of some of the plants, which were introduced into Norway with ships' ballast in the era of the sailing ships, is investigated. Some were casuals, which disappeared when the ballast traffic ceased at the time of the First World War. Others became more or less established, though only a few managed to extend their area considerably. Others again were later re-introduced by different means, and some of these have expanded their area in recent times.Keywords
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