Commodity markets will offer investors high returns as prices ride higher on rising interest from pension funds and robust consumption growth, a fund manager said on Tuesday.  "We really believe that this is an era of a bull market that will not stop tomorrow, but that’s going to be a bumpy bull market," said Cyrille E. Urfer, head of fund research and multi-management at Lombard Odier Darier Hentsch & Cie.