Stephen Burke was named vice chairman of Standish Mellon Asset Management, replacing Scott Powers, who left in July to become CEO of Old Mutual Asset Managements U.S. Holdings. Mr. Burke joins Ted Ladd, Richard Wood and Thomas Sorbo as Standish Mellon vice chairmen. Mr. Burke joins Standish from Dreyfus, where he was president of marketing and advertising. Both companies are units of Mellon Financial. His replacement at Dreyfus has not been named yet, said Christina ONeill, Dreyfus spokeswoman.