Logistic Growth
1: What is N?
N=Population size
2: What is r? What is the equation for r?
r is growth rate r=(Births-Deaths)/N
3: What did Darwin realize about elephants and their reproductive rate?
Darwin realized that elephants can reproduce slowly. However if all elephants reproduce at that rate, there would be 15 million elephants
4: What is K?
K is carrying capacity is the maximum population an ecosystem can support
5: What is the equation for exponential growth (j shaped curve)?
r=dN/dT
6: For logistic growth, what changes from exponential growth?
On the equation for logistic growth the rN side also has a multiplication of [(K-N)/K)]
7: What happens if r is bigger than 0?
Exponential growth will occur
8: What is an r selected species? Give an example.
A r selected species is a species that tends to grow as quickly as possible, such as a frog
9: What is a K selected species? Give an example.
A K selected species a specie which will not grow as quickly as possible but will have a longer life expectancy such as a chameleon
10: What kind of selected species are humans?
Humans are K selected
N=Population size
2: What is r? What is the equation for r?
r is growth rate r=(Births-Deaths)/N
3: What did Darwin realize about elephants and their reproductive rate?
Darwin realized that elephants can reproduce slowly. However if all elephants reproduce at that rate, there would be 15 million elephants
4: What is K?
K is carrying capacity is the maximum population an ecosystem can support
5: What is the equation for exponential growth (j shaped curve)?
r=dN/dT
6: For logistic growth, what changes from exponential growth?
On the equation for logistic growth the rN side also has a multiplication of [(K-N)/K)]
7: What happens if r is bigger than 0?
Exponential growth will occur
8: What is an r selected species? Give an example.
A r selected species is a species that tends to grow as quickly as possible, such as a frog
9: What is a K selected species? Give an example.
A K selected species a specie which will not grow as quickly as possible but will have a longer life expectancy such as a chameleon
10: What kind of selected species are humans?
Humans are K selected