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APES Unit 3 Populations

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APES Unit 3 Populations

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Terms in this set (48)
population density
number of individuals per unit of area
Image: population density
population dispersal
movement of individuals between populations
Image: population dispersal
uniform dispersal
evenly distributed
Image: uniform dispersal
random dispersal
randomly arranged
Image: random dispersal
clumped dispersal
Image: clumped dispersal
aggregation
clumping behavior of insects
Term
growth rate
Definition
r = (b-d) + (i-e)
Image: growth rate
biotic potential (intrinsic rate of increase)
maximum rate at which a population can increase under ideal conditions
Image: biotic potential (intrinsic rate of increase)
environmental resistance
combination of factors that prevent populations from reproducing at max rate
Image: environmental resistance
carrying capacity (K)
most limiting factor of a population
Image: carrying capacity (K)
survivorship
probability that an individual survives at a certain age
Image: survivorship
r-selected
type III reproductive strategy
- large number of offspring
- small body size
- fast maturation
- short lifespan
Image: r-selected
k-selected
type I reproductive strategy
- small number of offspring
- large body size
- slow maturation
- long lifespan
Image: k-selected
density-dependent factor
limiting factor that is affected by population size
Image: density-dependent factor
density-independent factor
limiting factor that is not affected by population size
Image: density-independent factor

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