A recent fish survey by C∙I∙B members in the headwaters of the Blyde River, Mpumalanga Province, revealed that Rainbow trout (Oncorhynchus mykiss) invasions have reduced the abundance and divided the community structure of native fish species.
Many of us are now familiar with urban commensal species - those that have adapted to life in towns and cities and can be seen to adapt their behaviour to exploit their new surroundings. Some of these urbanised species are then introduced to novel systems, and go on to become invasive.
A review of the peer-reviewed literature was undertaken at the Centre for Invasion Biology (C·I·B) to determine the level of understanding of the impacts of invasions of all taxonomic groups in all natural and semi-natural ecosystems in South Africa.
Common carp (Cyprinus carpio) are highly successful invasive fish and are responsible for the decline of numerous native species. Reasons for their success has been poorly understood until now.
The high demand for ornamental plants at a global scale, combined with modern and increasingly efficient modes of trade (i.e., e-commerce), highlights the horticultural trade industry as a subject of major conservation concern.