Introduction to Change Over Time in the Ecosystem

any change in the environment, that can modify the composition, structure, or function of an ecological community

• Ecosystem

• Secondary Succession

• Disturbance

• Biodiversity

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all living things and their physical environments within a particular area

• Community

• Invasive Species

• Ecosystem

• Biodiversity

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The first species to populate an area during succession.

• Keystone species

• Pioneer species

• Foundation species

• Invasive species

Primary succession occurs in an area that has:

• Has Soil

• Has No Soil

• Has Some Soil

• none of these

What is an example of an area that is likely to undergo primary succession?

• Glaciers melt and leave exposed rock

• Plants die from drought and decompose

• Land is bulldozed and soil remains

What are examples of pioneer species in a primary succession?

• Bushes and Shrubs

• Oak trees

• Mossess and Lichens 

• A rose Bush

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NGSS.MS-LS2-1

After a volcanic eruption, volcanic rock is present (but no soil). Which of the following states the most likely order of succession that would be seen?

• Lichens → Shrubs → Grasses → Trees

• Lichens → tree → shrubs→Grasses

• Grasses → Lichens → Shrubs → Trees

• Lichens → Grasses → Shrubs → Trees

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Primary or secondary ecological succession?

• 
• 

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T or F: Succession increases biodiversity.

• true

• false

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What is the order of succession shown in this figure?

• A, B, C, D

• B, A, D, C

• C, D, A, B

• D, A, B, C

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NGSS.MS-LS2-4