hartbeespoort damlatest news & developments
Water hyacinths at the Hartebeersport dam. (Delwyn Verasamy/M&G)

A 50-year seed bank and tiny hoppers: Hartbeespoort’s water hyacinth battle

Tiny biocontrol insects, released by the Centre for Biological Control, are preventing flowering and suppressing growth — a long-term solution to South Africa’s most problematic aquatic invasive plant

  • Sheree Bega
5 min read
Without biocontrol, Hartbeespoort Dam could be 70% covered in superweed

Tiny bugs winning the fight against invasive water hyacinth in Hartbeespoort Dam

Without biocontrol, Hartbeespoort Dam could be 70% covered in superweed

  • Sheree Bega
8 min read
Water hyacinth, native to South America, is described as the world’s worst aquatic weed. It thrives in nutrient-enriched waters like Hartbeespoort Dam, forming dense impenetrable mats that affect boating, fishing and water sport activities and harms aquatic biodiversity. (Delwyn Verasamy/M&G)

Powerful insect army reduces water hyacinth on Hartbeespoort Dam to 2.5%

The tiny planthoppers are biological control agents and natural enemies of the world’s worst aquatic weed

  • Sheree Bega
6 min read
Highly polluted reservoirs in Gauteng and the North West, including Hartbeespoort Dam, should be fenced off because of the health risks they pose to people and animals from blooms of toxic cyanobacteria. Photo: Getty Images

Seal off polluted dams to protect public health, says water expert

About 80% of the country’s dams are so enriched with nutrients they could produce toxic algal blooms

  • Sheree Bega
8 min read
Water hyacinth, native to South America, is described as the world’s worst aquatic weed. It thrives in nutrient-enriched waters like Hartbeespoort Dam, forming dense impenetrable mats that affect boating, fishing and water sport activities and harms aquatic biodiversity. (Delwyn Verasamy/M&G)

Tiny bugs reduce water hyacinth on Hartbeespoort Dam to 5%

Biological control is effective but the real solution would be to fix wastewater treatment plants in Joburg and Pretoria and stop sewage spills

  • Sheree Bega
9 min read