Invasive aquatic weed on Hartepesport dam. скачать в хорошем качестве

Invasive aquatic weed on Hartepesport dam.

Invasive aquatic weed on Hartepesport dam. After the news that the Hartebeespoort Dam would never fully be ridded of the invasive water hyacinth, a new pesky species of plant has proven to be equally difficult to control.  According to Invasive Species South Africa (ISSA), the small salvinia (Salvinia minima) officially became a “secondary invasion” aquatic weed in May last year.  We are joined by, Jo Dreyer a representative from wessa (The Wildlife and Environment Society of South Africa), Professor martin director of the centre for biological control and Petrus Venter deputy regional director of water resource management, department of sanitation North West.