Matching Pairs Population EcologyOnline version Matching by Bridget Ward 1 population growth rate (PGR) 2 Uniform Population Dispersion 3 Clumped Population Dispersion 4 Population Density 5 R Strategists 6 Dispersion 7 Density-Independent Factors 8 K Strategist 9 Immigration 10 Emigration 11 Density-Dependent Factors 12 Zero population growth (ZPG) 13 Random Population Dispersion 14 Carrying Capacity (k) The number of organisms in an area occurs when the birthrate equals the death rate Short life span Small body size Reproduce quickly Have many young Little parental care Ex: cockroaches, weeds, bacteria how fast a given population grows Population Growth Rate = Birth + Immigration – Emigration – Death Any factor in the environment that depends on the number of members in a population per unit area Long life span Large body size Reproduce slowly Have few young Provides parental care Ex: humans, elephants Number of Individuals Moving Out of a population The maximum population size that can be supported by the available resources the pattern of spacing of a population Number of Individuals Moving Into a Population Any factor in the environment that does NOT depend on the number of members in a population per unit area
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