Chapter 5 populations Flashcards
(6 cards)
Three factors that affect Population size
Number of births, number of death, immigration or emmigration
Population density
number of individuals per unit area.
Exponential Growth
Reproduces at a constant rate. At first the number of the individuals will grow slowly but will become faster… under ideal comditions with ideal resources population will grow exopnetially
Logistic growth
The growth slows or stops over time. Stops at the carrying capacity
Carrying Capacity
The largest number if individuals that a given environment can supports
5 factors that determine carrying capacity
Competiton, Predation, parasitism and disease, drought and other climate changes, human disturbances