  We analyse the effect of harvesting in a resource dependent age structured
population model, deriving the conditions for the existence of a stable steady
state as a function of fertility coefficients, harvesting mortality and
carrying capacity of the resources. Under the effect of proportional harvest,
we give a sufficient condition for a population to extinguish, and we show that
the magnitude of proportional harvest depends on the resources available to the
population. We show that the harvesting yield can be periodic, quasi-periodic
or chaotic, depending on the dynamics of the harvested population. For
populations with large fertility numbers, small harvesting mortality leads to
abrupt extinction, but larger harvesting mortality leads to controlled
population numbers by avoiding over consumption of resources. Harvesting can be
a strategy in order to stabilise periodic or quasi-periodic oscillations in the
number of individuals of a population.
