Rhodes University Aquatic weed and biocontrol database

Matthew Parkinson-Department of Zoology and Entomology, Rhodes University, Grahamstown

The database is primarily the compilation of data from 6 years (since 2008) of field surveys conducted by the Biological Control Unit of the Rhodes University Department of Zoology and Entomology, funded by Working for Water.

The survey focuses on the 5 floating aquatic weeds which are Red water fern (Azolla), Kariba weed (Salvinia molesta), Water hyacinth (Eichhornia crassipes), Parrot’s fearther (Myriophyllum aquanticum) and Water lettuce (Pistia stratiotes).

Data collected during these national field trips pertain to the species present at a site, the extent of the cover of the water body by each species, the present of the biological control agents and an assessment of general plant health and damage caused by the biological control agents that were present.

The data is useful firstly in documenting where the different weeds occur within the country and the extent to which biological control has been implemented in different regions and secondly contributes toward the long term monitoring and assessment of management strategies that have been implemented for various water bodies.

For more information please see the fact sheets below:

Red water fern (Azolla)

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