Population Ecology Population Growth

Population Ecology
Population Growth
Group of organisms of the same species
living in the same place
Population Growth
more survive than die
What are GOOD conditions for
population growth ?
Enough food
Enough water
Enough space
Not too much disease
Not too many (efficient) predators
No serious natural disasters (examples?)
Patterns of Population Growth
Grows quickly at first, then
reaches a plateau
Exponential, logistic, plateau
Carrying Capacity
= Maximum number of individuals of one
species that a habitat can support
Predator curve follows prey curve
in time
N1 = prey curve goes up/down first
N2 = predator curve goes up/down next
Fluctuations in Populations