Eco-geomorphology and vegetation patterns in arid and semi-arid regions P. M. Saco, G R. Willgoose, and G. R. Hancock School of Engineering, The University of Newcastle, Callaghan, New South Wales, 2308, Australia School of Environmental and Life Sciences, The University of Newcastle, Callaghan, New South Wales, 2308, Australia Received: 13 June 2006 – Accepted: 30 June 2006 – Published: 30 Aug...