scholarly journals Seed density is more effective than multi-trait limiting similarity in controlling grassland resistance against plant invasions in mesocosms

2018 ◽  
Vol 21 (3) ◽  
pp. 411-418 ◽  
Author(s):  
Florencia A. Yannelli ◽  
Gerhard Karrer ◽  
Rea Hall ◽  
Johannes Kollmann ◽  
Tina Heger
Keyword(s):  
Plant Invasions ◽  
Limiting Similarity ◽  
Seed Density

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

2021 ◽  
Author(s):  
Ali Omer ◽  
Maha Kordofani ◽  
Haytham H. Gibreel ◽  
Petr Pyšek ◽  
Mark van Kleunen
Keyword(s):  
Alien Species ◽  
South Sudan ◽  
Plant Invasions ◽  
Life Forms ◽  
Alien Plants ◽  
African Countries ◽  
Alien Flora ◽  
Result Show ◽  
Perennial Herbs ◽  
Disturbed Habitats

AbstractStudies 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.

Facilitation promotes plant invasions and indirect negative interactions

Oikos ◽  
2021 ◽  
Author(s):  
Christopher J. Lortie ◽  
Alessandro Filazzola ◽  
Charlotte Brown ◽  
Jacob Lucero ◽  
Mario Zuliani ◽  
...  
Keyword(s):  
Plant Invasions ◽  
Negative Interactions
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