ain't science great?
ok, so it's not directly about
permaculture.
the scientists don't mention
permaculture, probably don't know about
permaculture But show that
permaculture principles apply in nature
http://www.sciencedaily.com/releases/2011/05/110516080132.htm Species Are to Ecosystems as Cells Are to the Human Body, According to a Mathematical Model
"An ecosystem is like a great organism in that the species in it behave in a manner similar to the manner in which cells behave within the human body: the group forms a permanent entity, although the entities that form it are constantly being substituted."
very interesting article