POPULATION GROWTH LINEAR POPULATION GROWTH WHAT DO YOU

POPULATION GROWTH

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? ? ? § Exponential Population Growth

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

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

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? ?

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