Population
Population Ecology
=?
Group of organisms of the same species
living in the same place
Population Growth
Population Growth
=?
more survive than die
Patterns of Population Growth
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?)
No loss of habitat
Little competition
Exponential, logistic, plateau
Grows quickly at first, then
reaches a plateau
1
Carrying Capacity
Predator curve follows prey curve
in time
= Maximum number of individuals of one
species that a habitat can support
N1 = prey curve goes up/down first
N2 = predator curve goes up/down next
Fluctuations in Populations
2