Science 2200 Unit 1 Succession.

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Presentation transcript:

Science 2200 Unit 1 Succession

The Changing Ecosystem Have you ever noticed changes in the ecosystems around you? When? What were the changes like? Do you know what caused the changes?

The Changing Ecosystem

Succession Succession: A natural change of the ecosystem. The process where a biological community changes over time. These changes may be slow and hard to see over short time periods.

Pioneer species: the first species to live an ecosystem during succession. Example: lichens. Climax community: the final community of succession in an area. It doesn’t change for many years. Example: Balsam fir forests

2 Types of Succession 1. Primary Succession: Takes place in an area with no soil Examples: bare rocks, sand dunes, and cooled lava

Primary Succession

2 Types of Succession 2. Secondary Succession: The process where an ecosystem changes after it has been disturbed. Example: A forest changing after a fire. **The re-growth of a community.

How do you feel? Why?

Online simulation http://www.mrphome.net/mrp/succession.swf

Succession Video!

What is the order of pond succession?

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