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AP BIO

CH 52

QuestionAnswer
population individuals of the same species in the same general area
density how concentrated an area is populated
dispersion spacing of the population
mark-recapture method tag and release study
clumped individuals aggregated in patches
grain spacial variation of individual organisms
uniform evenly spaced population
random unpredictable pattern
biogeography the study of the distribution of species
demography study of vital statistics that affect population size
age structure relative number of individuals in each stage
birthrate/fecundity the number of offspring produced in a certain amount of time
death rate the number of offspring that die in a certain amount of time; highest in first year and old age
generation time average span between birth of individuals and birth of their offspring
sex ratio proportion of individuals in each sex
life tables life expectancy
cohort group of individuals of the same age
survivorship curve plot of members of a cohort and what ages they are alive at
semelparity live to grow, reproduce and die
iteroparity live longer by investing in smaller groups of offspring
zero population growth (ZPG) birth rates = growth rates
intrinsic rate of increase maximum population growth rate
carrying capacity maximum support an area can provide for a population
logistic population growth density from maximum population to zero as carrying capacity is reached
K-selected population/equilibrium population density limit imposed by resources
r-selected population/opportunistic population population density fluctuates
intraspecific competition individuals of the same species rely on limited resources
density dependent factor intensifies as the population increases in size
density independent factors unrelated to population size
Created by: Fox Science
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