#540: A thorny problem

Kenya's Samburu county has marginal land which is prone to desertification. 

To try to keep it in place, they decided to introduce a thorny tree called mathenge (also known as mesquite).

This article looks at what happened next.

Mathenge was planted... and got a little out of control.

#442: "Freakosystems"

A piece on the BBC Futures website talks about the impact of people on a Hawaiian island which has produced a very unusual ecosystem.

O'ahu's lowland forests are now almost entirely devoid of the plants and animals that grew here for millions of years before the arrival of humans. Settlers brought extinctions by cutting down trees to make farms and introducing voracious predators and disease-carrying animals. Today, these tropical forests are a tapestry of non-native species introduced from every corner of the planet: Brazilian peppertree, Indonesian cinnamon and roseleaf bramble from the Himalayas and Australia. Most of the animals, including all the birds that Tarwater mentioned earlier, are also alien.

Update

Another example....

These are ‘freaksosystems’, or Frankenstein ecosystems. For the most part, people who work in landscape design and management have the feeling that they know better than nature. They love nothing more than to create a ‘freakosystem’ of their own designing (I love this term 😂). https://t.co/fjPczCuVm0

— Ben Goldsmith (@BenGoldsmith) April 28, 2025