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Articles on Invasive species

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Alien trees threaten biodiversity, increase the risk of wildfires and also guzzle water. Photo courtesy Cape Winelands Biosphere Reserve

Removing alien plants can save water: we measured how much

Clearing alien trees from mountain catchments is a more cost-effective approach to providing water than building and maintaining desalination plants.
Alien pine trees, which use substantially more water than the native vegetation of the Cape Mountains, reduce river flows to dams that supply the city’s water. Martin Kleynhans

Clearing alien trees can help reduce climate change impact on Cape Town’s water supply

Clearing alien trees before the drought hit could have reduced the impact of climate change on water supply during the ‘Day Zero’ drought.
The effects of climate change are heightened in urban areas and impose a high financial burden to the municipalities. THE CANADIAN PRESS/Nathan Denette

Warmer, wetter, wilder: 38 million people in the Great Lakes region are threatened by climate change

Shoreline communities are already faltering under the weight of billions of dollars in damages — and worrying that climate change will continue to make things even worse.

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