Feb. 15, 2008 -- Champagne produced in southern England? Bordeaux in the Loire Valley?

Climate change is threatening to redraw the world's wine-producing map, and the effects are already being seen in earlier harvests and coarser wines, experts told an international conference Friday.

"The consequences of global warming are already being felt. Harvests are already coming 10 days earlier than before in almost all wine-growing regions," said Bernard Seguin, the head of climate studies at France's INRA agricultural research institute.

He was speaking at the opening of the Second International Congress on Wine and Climate Change.

More than 350 experts from 36 countries, including France, Spain, the United States, New Zealand and Australia, are taking part in the two-day conference in Barcelona.

"Wine and wine-producing will change in a way that will depend on how we confront" global warming, said Seguin.