(Reuters) - Global wine auctions and investments will slow next year as the euro zone crisis and slowdown in the U.S. economy take their toll on the wine industry, but Asia may prove slightly more resilient, said Pancho Campo, a Spanish wine expert. Fears of a Greek default that have roiled the world's financial markets and stubbornly high U.S. unemployment rates have had an impact on recent auctions, with none of the auction houses this month selling 100 percent of their lots.