Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892



Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

Discuss Concepts How do human activities disrupt the process of succession in terrestrial communities? Would you describe most of our activities as mild disturbances, moderate disturbances, or severe disturbances?

Summary Introduction

To review:

Whether the human activities can be characterized as mild disturbance, moderate disturbance, or severe disturbances with regard to succession in terrestrial communities.


The constant change of habitat and ecosystem that develops over time is called ecological succession. Different ecosystems in different stages of same succession in sites with similar physical conditions. The change caused by human can be intentional or unintentional but they are unwanted and can be irreversible.


Primary succession is an ecological succession that begins in a region with no soil or soil, which is incapable of sustaining life. Secondary succession is a process occurred by any disturbance such as forest fire, harvesting, hurricane that reduces an already established ecosystem to a smaller population of species.

Ecosystems experience powerful effects caused by human activities. Activities like cutting of tropical rainforests, the polluting of rivers as well as streams, various chemicals and particulates into the atmosphere from industries...

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