MOSCOW, March 15 (Reuters) – Russia’s En+ Group, which manages tycoon Oleg Deripaska’s aluminium and hydropower businesses, said on Thursday its fourth-quarter net profit fell 37 percent year on year to $505 million because of a high base effect. En+ said its fourth-quarter revenue was up 31 percent to $3.4 billion. The company’s adjusted earnings before interest, taxation, depreciation and amortisation (EBITDA) rose 32 percent to $907 million, beating $892 million predicted by analysts in a Reuters poll.