Module 4 Flashcards
What is population density?
The number of an organisms per unit area.
What is dispersion?
The pattern of spacing of a population within an area
What is density independent factor
Environmental factor that does not depend on population size
What is density dependent factor?
Environmental factors such as disease predators or lack of food that affect population and population size increase
What is density dependent factor?
Factors such as disease predators with lack of food that increasingly affect a population as the population size increases
Population growth rate
How fast a specific population grows
Emigration
Movement of individuals away from a population
Immigration
Movement of individuals into a population
Carrying capacity
The maximum number of
Individuals in a species that in environment can support for the long term
Demographic transition
Transition from high birth and death rate to low birth and death rate
Demographic transition
Transition from high birth and death rate to low birth and death rate
Zero population growth
When births plus immigration equal death plus emigration for a generation
Age structure
The number of males and females in each of the three groups of reproductive stages
