BIO pop

BIO pop - -Growth of a population(table 49.2-N t = N R^ g o...

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BIO POPULATIONS - r and K selected species predicated on the fact that larger organisms tend to have a longer generation time than smaller organisms - deer mice in Ontario have a difference in age of first reproduction is 2 months with 4/5 litters per year, while Albertan mice have ½ litters after 12 months. one species is r, one species is K? - Some animals have small litters and weight but can reproduce at a young age and live a very long time. - d change - N # of individuals - t time - r intrinsic rate of increase - K carrying capacity dN = Rn |K-N| dt K - R multiplecation rate (N0/Nt) - r is the intrinsic rate of increase - T is generation time - l x is survival - m x is fecundidty - N t = N 0 e rt
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Unformatted text preview: -Growth of a population (table 49.2)-N t = N R^ g o g = # of generations o generation time is taken using average of all birth ages-the age of first reproduction is extremely important!-Mammals age of maturity (first litter), number of offspring per liter, frequency of breeding (litters per year), longevity period of fecundity -Females are more important than males, esp. in polygynous situations. o Females provide care to the young, determine interval between litters and their size-Survivorship starts at 1, declines to 0-Fecundity number of young alive per individual at each age-N is difficult to calculate- K limits population growth...
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