Form and function of grass ring patterns in arid grasslands: the role of abiotic controls Ravi, Sujith ; D'Odorico, Paolo ; Wang, Lixin ; Collins, Scott Abstract Publication: Oecologia Pub Date: December 2008 DOI: 10.1007/s00442-008-1164-1 Bibcode: 2008Oecol.158..545R