In an ecosystem may living beings coexist and interact with each other. They are capable of adapting to the slow evolution of their environment. However, if transformations are too quick, the ecosystem is no longer in equilibrium which can result in its destruction.

This animation demonstrates the case of an aquatic environment invaded by a water hyacinth. The rapid growth of the hyacinth disrupts the natural equilibrium of this ecosystem causing the disappearance of aquatic species by asphyxia.