Question

Autogenic and allogenic succession differences

Answer 1

In ecology, allogenic succession is succession driven by the abiotic components of an ecosystem. In contrast, autogenic succession is driven by the biotic components of the ecosystem. An allogenic succession can be brought about in a number of ways which can include:

Volcanic eruptions
Meteor or comet strike
Flooding
Drought
Earthquakes
Non-anthropogenic climate change
Allogenic succession can happen on a time scale that is proportionate with the disturbance. For example, allogenic succession that is the result of climate change can happen over thousands of years.
In ecology, autogenic succession is succession driven by the biotic components of an ecosystem. In contrast, allogenic succession is driven by the abiotic components of the ecosystem.