QUOTE (Neraph @ Aug 23 2010, 11:27 PM)

I haven't run through the mathematics behind it, but it is possible to reach a state of equilibrium in which a ghoul population's growth can be kept safe as long as you remember to "harvest" the population at a certain age. Also, putting metahumans into the mix changes the numbers dramatically - one troll can feed a family of gnomes for a few days, whereas the reverse is not neccessarily true.
True enough. Running the calculations with a few assumptions thrown in can show what the carrying capacity of the SR world is for ghouls.
1 ghoul needs to eat 2.6 times it's body weight per year. Assuming homogeneous populations, this can be assumed to equate to 2.6 individuals per year.
Death rates are calculated as deaths per 1000, so for 1 ghoul in a population of 1000, a death rate of 2.6 is sufficient.
If death rates are fairly awful, at 26 per 1000, that population can support a ghoul population of 10.
Ghouls have to be at less than 1% of the population to not need to kill other people.
Therefor, a population with an acceptable ration of ghouls to death rate can treat them like people, but any increase in that population needs to be treated as a cataclysm.