[BurningFrog]

True, but it's also good to remember that the new system isn't "worse" or "better" than the old one.

A lot of people seem to think that if you "destroy" an ecosystem it is a step toward a lifeless environment.

[HarryHirsch]

We are experiencing this in parts of the ocean - a switch from fishes to jellyfish. One is edible, the other, not so much.

Here's some comments: https://science.sciencemag.org/content/333/6049/1547.6

[ganafagol]

In the short term it's reducing the diversity of the ecosystem, yes. And the effect of that tends to pull in quite a bunch of effects that contribute to that effect even more. Only in the long run will there be more diversity again. But by that time we'll all sit in Musk Kingdom on Mars with oxygen masks and radiation suits and legends of ancestors who used to know what a summer breeze at a lake felt like, cause we succeeded to colonize another planet and that was totally worth it!!!11