Population Growth
What are the two main types of population growth curves?
Exponential and logistic
What is carrying capacity?
The maximum number of individuals an environment can support
What unit is often used when measuring population density?
Individuals per square kilometer
Which survivorship curve shows no age effect on death rate?
Type II
What shape represents exponential growth?
J-shaped curve
What can cause a change in carrying capacity?
Natural disasters, habitat destruction, or resource changes
What method estimates plant populations in a fixed( not moving) area?
Quadrat sampling
Which survivorship curve has organisms with short lifespans?
Type III
What shape represents logistic growth?
S-shaped curve
What type of limiting factor increases with population size?
Density-dependent
What method estimates moving animal populations?
Mark and recapture
Which survivorship curve has organisms with long lifespans?
Type I
What problem could arise if a population continues exponential growth?
Overpopulation leading to resource depletion
Is a hurricane killing a sheep population density-dependent or independent?
Density-independent
Why is it better to have more recaptures in a mark-recapture study?
It increases accuracy
What happens to a predator population if its prey decreases?
It also decreases
What determines the rate of population growth?
Birth rate, death rate, immigration, and emigration
How does adding a predator like a wolf benefit a deer population?
It prevents overpopulation and maintains balance
What are the four factors that influence population size?
Births, deaths, immigration, emigration
Construction crews take down a stand of Maple tree=
density-dependent or density independent
Density independent