Population Growth Flashcards
What is population ecology?
Study of the number of organisms in a particular place
What is population size
Total number of individuals in the population
What is population density?
The number of individuals per unit of area
Factors affecting population size:
Birth rate
Death rate
Immigration rate
Emigration rate
Types of growth:
Exponential
Logistic
Population cycle
What is exponential growth?
When the population increases by a constant proportion over a constant time
Exponential growth is limited by:
The availability of resources
What is logistic growth?
Changes in growth rates that occur as resources become limited
The max population size that can be sustained in a given environment is known as:
Carrying capacity
The population sizes of two or more species change together because at least one of them is influenced by the other is known as what type of growth?
Population cycle
Most pressing ecological problems today:
Excess population growth
Destruction of the environment
What is known as the land needed to directly or I directly support human activities?
Ecological footprint
What are the 4 factors considered when estimating changes in the size of a population?
Birth rate
Death rate
Immigration rate
Emigration rate
What is carrying capacity?
A)The number of predator and prey species found in a given environment
B)The avg population size that can be sustained in a given environment
C)The max population size that can be sustained in a given environment
D)The number of primary producer species found in a given environment
C)The max population size that can be sustained in a given environment
Currently human demand exceeds the biospheres regenerative capacity
True
False
True
