Eucalyptus
Eucalyptus as an invasive species

Eucalyptus trees are considered invasive to local ecosystems and negatively impact water resources in countries where they are introduced.

South Africa

In South Africa, Eucalyptus tree species E. camaldulensis, E. cladocalyx, E. conferruminata, E. diversicolor, E. grandis and E. tereticornis are listed as Category 1b invaders in the National Environmental Management: Biodiversity Act. This means most activities with regards to the species are prohibited (such as importing, propagating, translocating or trading) and it should be ensured that it does not spread beyond a plantation's domain.

E. cladocalyx and E. diversicolor are considered Fynbos invaders, and use up to 20% more water than the native fynbos vegetation; with invasive species including Eucalyptus being cleared that reduce Cape Town's water resource by 55 billion litres or two months worth of water supply.
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