POPULATION GROWTH. LINEAR POPULATION GROWTH What do you think it means???? Talk at your table about your understanding of the words “linear”, “population”,

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Presentation transcript:

POPULATION GROWTH

LINEAR POPULATION GROWTH What do you think it means???? Talk at your table about your understanding of the words “linear”, “population”, and “growth”. Be ready to share!

LINEAR POPULATION GROWTH What do you think it means???? Linear Population Growth

LINEAR POPULATION GROWTH DEFINITIONS: Linear – in the form of a line Population – amount of organisms in an area Growth – increasing in numbers

NOTES “Normal” line shape Steady rate of growth that is consistent over the generations

EXPONENTIAL POPULATION GROWTH What do you think it means???? Talk at your table about your understanding of the words “exponential”, “population”, and “growth”. Be ready to share!

EXPONENTIAL POPULATION GROWTH What do you think it means???  Exponential Population Growth

EXPONENTIAL POPULATION GROWTH DEFINITIONS: Exponential – keeps doubling; the bigger it gets, the faster it grows. Population – amount of organisms in an area Growth – increasing in number

NOTES “J” curve Slow initial growth and then a rapid population explosion after *This can occur when there are no limits to a population size.

W HEN WOULD THERE BE “ NO LIMITS ” Any ideas?

S O, WHAT DOES IT LOOK LIKE MATHEMATICALLY ??? Linear? Exponential?

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Example using Fish Click the picture to see an example of the exponential growth of a fish population.

Students - Provide examples of “FACTORS AFFECTING POPULATION GROWTH” What term do we give to the “things” you just listed??

SAMPLE LIMITING FACTORS AFFECTING POPULATION GROWTH Humans! ( explain HOW this makes sense!) Weather! (provide an example!) Habitat! (Why does this make sense?!) Predators! (Is this true in all cases? Explain…) Food! (convince us that this makes sense!)

R ATE YOUR LEARNING ! Use the generic scale: 0 = I’m don’t get this at all! 1 = I get some of it 2 = I get most of it 3 = I totally get this! 4 = I can help teach someone else this! Now, talk at your tables about your learning. Can you help someone there? Do you need help from someone there? Be ready to chat with your teacher!