I don't think so. Ideas have flowed both ways, but I've been using Gnome since the 90s and OSX has taken more from Gnome in my opinion than Gnome from OSX.
http://en.wikipedia.org/wiki/Spaces_%28software%29#Compariso...
In short, as far as virtual desktops go, what GNOME (metacity/beryl) does is the exactly same thing every window manager has been doing for the past decade at least, and the concept of virtual desktops (non-ICCCM+ implementations) goes much further back than that.
[1] http://standards.freedesktop.org/wm-spec/wm-spec-latest.html