A typical population growth curve which is the number of
individuals over time, linear scale has a sigmoidal
shape.
There is short and slow initial growth followed by fast and
longer period of growth and once again a decrease in growth prior
to the stabilization or equilibrium stage.S-shaped growth curve
(sigmoid growth curve).
A pattern of growth in which, in a new environment, the
population density of an organism increases slowly initially, in a
positive acceleration phase.
However,the population growth according to the biotic potential
curve is not sigmoidal;it is crescent-shaped and approaches
infinity