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10 Cards in this Set

  • Front
  • Back
age structure
The relative number of individuals of each age in a population.
carrying capacity
The maximum population size that can be supported by the available resources, symbolized as K.
demography
The study of statistics relating to births and deaths in populations.
density-dependent factor
Any factor influencing population regulation that has a greater impact as population density increases.
density-independent factors
Any factor influencing population regulation that acts to reduce population by the same percentage, regardless of size.
exponential growth
In populations, the increasingly accelerated rate of growth due to the increasing number of individuals being added to the reproductive base. Exponential growth is very seldom approached or sustained in natural populations.
logistic population growth
A model describing population growth that levels off as population size approaches carrying capacity.
population density
The number of individuals of a population per unit area or volume of living space.
predator
An organism that eats other living organisms.
prey
An organism eaten by another organism.