Identify an old game

[Erik Mooney <erik@dos486.com>]

Hi all, 

I'm trying to track down the name of an Apple II game that I played back
in elementary school, circa 1987.  It was an overhead view with fairly
simple tile-based graphics, with you stranded on some island.  You had to
find enough food to stay alive until rescued, which was easy, but then the
secondary goal was to keep the island's ecosystem in balance.

If you ate too many plants, the rabbits would start to die from lack of
food.  If you ate too many rabbits, the foxes or bears or something would
die from starvation.  If you killed too many bears, the rabbits would
multiply due to having no predators, and would eat all the plants.  The
game had graphical histograms of the plant / rabbit / bear population, and
would continue to simulate the island's ecosystem even after you were
rescued.

Does this sound familiar to anyone?  Been wondering for a few years now...

Thanks :)
- Erik