Populations Quiz 1

Specialists

smaller range of tolerance/narrower ecological niche makes them more prone to extinction

• specific food req.

• less ability to adapt to new conditions

Generalists

Larger range of tolerance, broader niche makes less prone to extinction + more likely to be invasive

• broad food req.

• high adaptability

K-selected species-

“quality”

• few offspring, heavy parental care to protect them

• reproduce multiple times

  • ex. birds

• long lifespan, takes long time to sexual maturity=low biotic potential=slow pop. growth rate

r-selected speices

“quantity”

• many offspring, littler care

• may reproduce 1x

  • ex. fish, plants

• short lifespan, fast sexual maturity=high biotic potential=high pop. growth rate

  • more invasive

  • better in fast changing enviro.

r-selected graph

exponential

k-selected graph

s-curve

Biotic potential

max preproductive rate