The alien flora of Sudan and South Sudan: taxonomic and biogeographical composition

Studies on plant invasions depend on local and regional checklists of the alien flora. However, global overview studies have shown that some regions, including many African countries, remain understudied in this regard. To contribute to filling this gap, here we present the first checklist of alien...

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Bibliographic Details
Published in:Biological invasions 2021-07, Vol.23 (7), p.2033-2045
Main Authors: Omer, Ali, Kordofani, Maha, Gibreel, Haytham H., Pyšek, Petr, van Kleunen, Mark
Format: Article
Language:English
Subjects:
Alien Floras and Faunas
Alien Floras and Faunas 9
Biomedical and Life Sciences
Check lists
Composition
Developmental Biology
Ecology
Flora
Flowers & plants
Freshwater & Marine Ecology
Genera
Herbs
Introduced species
Life Sciences
Medicinal plants
Plant Sciences
Plant species
Plants (botany)
Taxonomy
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Summary:Studies on plant invasions depend on local and regional checklists of the alien flora. However, global overview studies have shown that some regions, including many African countries, remain understudied in this regard. To contribute to filling this gap, here we present the first checklist of alien plants of Sudan and South Sudan (the Sudans). We analysed the taxonomic and geographical composition of the species on this list. Our result show that of the 113 alien species in Sudans (99 in Sudan and 59 in South Sudan), 92 (81.4%) are naturalized and 21 (18.6%) are just casual aliens. The number of naturalized species represent 2.2% of the total flora of the Sudans (4096). The alien species belong to 44 families and 85 genera, and many of them are native to Southern America and Northern America (85.8%). Annual and perennial herbs are the prevailing life forms in the alien flora of the Sudans (68.1%), and, among the casual species, perennial herbs are underrepresented whereas woody tree species are over-represented. Alien plants of the Sudans are mostly used for medicinal and environmental purposes globally. The naturalized plants predominantly occur in man-made disturbed habitats, such as agricultural and ruderal habitats. This first overview of the alien flora of the Sudans should stimulate further research and recording of the alien flora to better understand the drivers and consequences of alien plants in the Sudans.
ISSN:1387-3547
1573-1464
DOI:10.1007/s10530-021-02495-7