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13 terms

Chapter 5 Populations

Chapter 5 Populations
STUDY
PLAY
population density
number of individuals per unit of area
immigration
movement of individuals into an area occupied by an existing population
emigration
movement of individuals out of an area
exponential growth
growth pattern in which the individuals in a population reproduce at a constant rate
logistic growth
growth pattern in which a population's growth rate slows or stops following a period of exponential growth
carrying capacity
largest number of individuals of a population that a given environment can support
limiting factor
factor that causes the growth of a population to decrease
density-dependent limiting factor
limiting factor that depends on population size
predator-prey relationship
mechanism of population control in which a population is regulated by predation
density-independent limiting factor
limiting factor that affects all populations in similar ways, regardless of population size
demography
scientific study of human populations
demographic transition
change in a population from high birth and death rates to low birth and death rates
age-structure diagram
graph of the numbers of males and females within different age groups of a population