unit 7. concept 5.
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23 Terms
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What is ecological succession?
The process of ecological change in an ecosystem where one community is replaced by another community over time
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Primary succession
Formation of a new ecosystem
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Secondary succession
Recovery of an old ecosystem
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Where does primary succession occur
In an area that has not been previously occupied
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Pioneer species
The first organisms to grow in a new environment
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Primary succession pioneers
Lichens and mosses,
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What happens to pioneer species over time
Organisms decompose and release nutrients to form a layer of soil that larger complex plants can grow in
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What happens once enough soil has been generated
It can retain nutrients, small plants, flowers, ferns, and shrubs
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What is a climax community
A mature and stable community of plants and animals
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what is secondary succession
When an area that was previously occupied by a living organism immunity was destroyed by a disturbance and begins to success
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secondary succession cont
And establish community is destroyed by soil is still intact. Therefore, it takes less time than primary succession
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What are the pioneer species for secondary succession?
Weed and grass
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Why does secondary succession tend to occur more quickly than primary
Because you don’t have to make soil from scratch and secondary succession like in primary
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Building a brand new ecosystem in scratch no soil
Primary succession definition
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Baking cookies from scratch with flour, butter, sugar, etc.
Primary succession analogy
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Volcano erupts or glacier melts
Primary succession example
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Mosses and lichens because they can make soil
Primary succession pioneer species
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Mature and stable climax community
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Primary succession results
Primary succession results
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Recovering a previously existing ecosystem after disturbance soil intact
Secondary succession, definition
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Baking cookies with premade dough
Secondary succession analogy
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Forest fire, hurricane farming
Secondary succession sample
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Weeds and grasses maybe some awesome lichens but soil is there
Pioneer species secondary succession
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Mature and stable, climax, community
Secondary succession results