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AP Bio - Chapter 53

Population Ecology

QuestionAnswer
the relative number of individuals of each age in a population age structure
reproduction in which an organism produces all of its offspring in a single event big-bang reproduction/semelparity
a group of individuals of the same age in a population cohort
the study of statistics relating to births and deaths in populations demography
the number of individuals per unit area or volume density
referring to any characteristic that varies according to an increase in population density density-dependent
referring to any characteristic that is not affected by population density density-independent
the pattern of spacing among individuals within the boundaries of the geographic population dispersion
the movement of individuals out of a population emigration
growth of a population in an idea, unlimited environment, represented by a J-shaped curve when population size is plotted over time exponential population growth
the influx of new individuals into a population from other areas immigration
reproduction in which adults produce offspring over many years; also known as repeated reproduction iteroparity
selection for life-history traits that are sensitive to population density; also called density-dependent selection K-selection
the traits that affect an organism's schedule of reproduction and survival life history
a table of data summarizing mortality in a population life tables
population growth that levels off as population size approaches carrying capacity logistic propulation growth
a localized group of individuals of the same species that can interbreed, producing fertile offspring population
the study of how complex interactions between biotic and abiotic factors influence variations in population size population dynamics
the study of populations in relation to their environment, including environmental influences on population density and distribution, age structure, and variations in population size population ecology
selection for life history traits that maximize reproductive success in uncrowded environments; also called density-independent selection r-selection
a plot of the number of members of a cohort that are still alive at each age; one way to represent age-specific mortality survivorship curve
Created by: mrariail
 

 



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