Eliminating one species can have disastrous results on ecosystem
lundi 2 septembre 2013 à 14:00The example of sea otters demonstrates how eliminating one species can have disastrous results on an entire ecosystem.
Humans change ecosystems in many ways. When Europeans first visited what is now Sydney, the forest was sparse — because the aborigines kept burning it. Large trees lived through the fires, but bushes burnt up. The Europeans did not allow fires, and this led to dense forests.