1. What is “r” stand for?
r stands for growth rate
2. What happens if we have a positive “r”?
You will have exponential growth and eventually hit logistic growth
3. What is “N”?
N is # of individuals in population
4. What is “K”?
K is the carrying capacity
5. Explain the survivor ship curve. (Give an example for each)
Type 1: Survival is likely early on. Humans are an example
Type 2: The organism dies at a linear rate. Robins are an example.
Type 3: Most of the organism dies early on. An example are frogs
6. How does the environment affect the survivor ship curve?
Stable environments promote a longer life expectancy.
7. What are “r” selected species? Explain characteristics of these species.
Those that based their life on growth rate.
Those that are basing their lives on carrying capacity
r stands for growth rate
2. What happens if we have a positive “r”?
You will have exponential growth and eventually hit logistic growth
3. What is “N”?
N is # of individuals in population
4. What is “K”?
K is the carrying capacity
5. Explain the survivor ship curve. (Give an example for each)
Type 1: Survival is likely early on. Humans are an example
Type 2: The organism dies at a linear rate. Robins are an example.
Type 3: Most of the organism dies early on. An example are frogs
6. How does the environment affect the survivor ship curve?
Stable environments promote a longer life expectancy.
7. What are “r” selected species? Explain characteristics of these species.
Those that based their life on growth rate.
- Unstable environment
- High rate of off springs
- Small body size
- Early Maturity
- Short Generation Time
- Dispersed offspring
Those that are basing their lives on carrying capacity
- Stable environment
- Large body size
- Long life expectancy
- High parental care
- Fewer offspring