notes_population2 - Notes Populations and Communities The...

Notes: Populations and Communities
The BIG Idea: The __Size__ of a population is affected by living
and nonliving factors
How is a honeybee colony an example of a
population?
These honeybees make a group of
____Organism____ of the same species that live
in a specific ___Area___.
• What is population?
• Demography - the statistical study of ___Populations ___, used to
make ___Prediction___ about how a population will change.
Three Key Features of Populations
1. ___Size of populations___
2. ___Density of Population___
3. ___Dispersion_ __
Growth Rate
_____Birth Rate _____ – ____Death Rate ____ = growth rate
Growth Curves
• ___Exponential Growth___ – growth pattern in which the
individuals in a population reproduce at a constant rate
• ___Logistic Growth___ – growth pattern in which a population’s
growth rate slows or stops following a period of exponential
growth
• Populations are limited by space, food. That limit is called the
___Carrying Capacity___
Exponential
Growth – J curve
1

Logistic growth – S curve -
Carrying capacity-
2