catalyst 8/29/2011 put out the vocab words and class notes to be checked. 1) how are deathrate and...
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Catalyst 8/29/2011• Put out the vocab words and class notes to be
checked.
• 1) How are deathrate and birthrate measured?
• 2) Describe the idea of biotic potential. Rank the biotic potential of the following species from least to greatest: bears, termites, squirrels, humans, deer, tuna, bacteria
• HW: 1) Create Frayer Vocabulary Words for today’s vocabulary words
• 2) Summarize Cornell Notes taken in class
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Agenda 8/29/2011• Catalyst (15 mins)
• Carrying Capacity and Pop Curves (55 mins)
• Independent work time (40 mins)
• Exit Slip: 10 mins
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The Simpsons Pool• 1) What vocabulary words can we link when
the kids left from Lisa’s pool to Martin’s pool? Explain how you came to that conclusion.
• 2) Martin’s pool became very popular. What eventually happened to his pool? Why did it happen?
• 3) How could have Martin prevented the fate of his pool?
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Carrying Capacity and Graphs
• Exploring Carrying Capacity Scenarios
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Carrying Capacity and Graphs
• The title of these notes are “No Population Can Grow Indefinitely”
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r• The intrinsic rate of increase (r) is the rate
at which the population of a species would grow if it had unlimited resources
• Resources: light, water, space, food
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Carrying Capacity• There are always limits to population growth in
nature
• Environmental Resistance is the combination of all factors that act to limit the growth of a pop.
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Carrying Capacity• Biotic Potential and Environmental Resistance
determine the carrying capacity (K).
• Carrying Capacity is the maximum population of a given species that a particular habitat can sustain without degrading
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Growth Curves and Graph Types
• If a population has a constant birth rate through time and is never limited by food or disease it is experiencing Exponential Growth.
• This is portrayed with a J-Curve graph:
• Look at the board
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Growth Curves and Graph Types
• Logistic Growth involves rapid exponential growth followed by a steady decrease in growth until the population levels off.
• This is portrayed with a S-Curve graph:
• Look at the board
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Growth Curves and Graph Types
• Overshoot and Collapse involves rapid exponential growth followed by a dramatic decrease in population that can eventually lead to extinction
• This is portrayed with a Overshoot and Collapse graph:
• Look at the board
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Growth Curves and Graph Types
• Reproductive Time Lag is the period needed for the birth rate to fall and the death rate to rise during a crash
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Today’s Vocabulary
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Vocabulary Charades
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Vocabulary Charades
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Vocabulary Charades
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Vocabulary Charades
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Vocabulary Charades
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Vocabulary Charades
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Vocabulary Charades