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 dis 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 is a species that tends to grow as quickly as possible, such as a f
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 dis 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 is a species that tends to grow as quickly as possible, such as a f
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