R AND K GUIDED VIEWING
1: What does “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 the number of individuals in the population
4: What is “K”?
"K" is carrying capacity
5: Explain the survivorship curve. (Give an example for each)
TYPE I: High survival likelihood early on (Humans)
TYPE II: Dying off at a linear rate (robins)
TYPE III: Most die off very early on (frogs)
6: How does the environment affect the survivorship curve?
Some environments are stable in comparison to others. Stable environments usually help prolong life
7: What are “r” selected species? Explain characteristics of these species.
Species that base their life on growth rate.
8: What are “K” selected species? Explain characteristics of these species.
Species that live for a long time (Live for exponential and logistic growth)
"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 the number of individuals in the population
4: What is “K”?
"K" is carrying capacity
5: Explain the survivorship curve. (Give an example for each)
TYPE I: High survival likelihood early on (Humans)
TYPE II: Dying off at a linear rate (robins)
TYPE III: Most die off very early on (frogs)
6: How does the environment affect the survivorship curve?
Some environments are stable in comparison to others. Stable environments usually help prolong life
7: What are “r” selected species? Explain characteristics of these species.
Species that base their life on growth rate.
- Unstable environment
- High Fecundity (Lots of offsprings)
- Small body size
- Early maturity
- Short generation time
- Dispersed off spring
8: What are “K” selected species? Explain characteristics of these species.
Species that live for a long time (Live for exponential and logistic growth)
- Stable environment
- Large body sizes
- Long life expectancy
- High parental care
- Fewer offsprings