Aquaponics is often integrated into vertical farming designs. If anyone
is interested in seeing the current state of "vertical farming," there
is a great resource now online from a conference in September.
Leaders from all over the world in vertical farming gathered on
September 26 2012 at the University of Maryland for the Challenges In
Vertical Farming workshop. Online you can find 18 videos of the talks,
each 20 - 30 minutes long. I've watched 9 of them thus far, and there is
no mention of permaculture at all. But I have found all of the videos to
be interesting. It is an extreme focus on technology and they are
talking about megawatts of power to grow food.
Go to youtube and type CIVF2012 in the search box to watch the videos.