chapter 3 changes in ecosystems science 10 - biology
TRANSCRIPT
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Chapter 3Changes in Ecosystems
Science 10 - Biology
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Natural Selection
The process in which, over time, the best-adapted members of a species will survive and reproduce. This process makes change in living things possible.
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Adaptive Radiation
The development of a number of new species from a common ancestor; the new species are adapted to inhabit different niches.
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Succession
• Primary succession• Secondary succession
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1. Primary Succession
• No soil
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2. Secondary succession
• Has soil
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1. Primary succession inpictures...
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VS.
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What are the differences?
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What are the differences?
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POP QUIZ
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Is this an example of:A) primary successionB) secondary successionC) BioremediationD) Adaptive radiation
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Is this an example of:A) primary successionB) secondary successionC) BioremediationD) Adaptive radiation
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An example of the first pioneer species?
A) mossB) lichenC) deciduous treesD) coniferous trees
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An example of a pioneer species would be: A) moss
B) lichenC) deciduous treesD) coniferous trees
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Summary• As succession increases in time
– # of species…………………………increases– Total population……………………increases– Total Biomass………………………increases– Organic Matter……………………...increases
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Volcano
Life After People
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Humans Influence on Ecosystems???
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Humans Influence on Ecosystems…